Showing posts with label cacti and succulents. Show all posts
Showing posts with label cacti and succulents. Show all posts

Tuesday, June 9, 2015

Aloe vera is turning brown.

Aloe vera in small pots. Photo by Cintia Siqueira from Pexels

Q. My mother gave me some Aloe vera she had grown on her window sill. I read it will take full sun, so put it on my patio. It's slowly turning brown. HELP!

A. Aloe vera will grow in full sun, but apparently it was not getting so much on her windowsill. When transitioning such plants from shade to full sun, it's best to do so gradually so they harden off. If yours haven't spent too many days in the sun, I suggest you treat them to afternoon shade for a few weeks before moving them back to the patio.

If you live in USDA climate zones 9 through 11, you can even plant aloes outdoors in a cactus garden. They're excellent for xeriscaping.

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Wednesday, September 3, 2014

The Howard Peters Rawlings Conservatory and Botanic Gardens, Baltimore, MD


Howard Peters Rawlings Conservatory and Botanic Gardens, Baltimore, MD

The Howard Peters Rawlings Conservatory and Botanic Gardens, located at the western edge of Baltimore's historic Druid Hill Park, is the second oldest surviving glass conservatory in America. Originally known as the Baltimore or Druid Hill Conservatory, it opened to the public in 1888. America's oldest glass conservatory is San Francisco's Conservatory of Flowers, opened in 1879.

Before exploring the conservatory, it would be helpful to know a little about its historical context. Let's begin with the land and the Susquehannocks. The Historical Society of Baltimore has published an excellent article - The Susquehannocks' Prosperity and Early European Contact by Adam Youssi - that you should read.

According to Youssi, a very large area that included Druid Hill Park was once claimed by the Susquehannocks and surely contested by others. The Susquehannocks had reputedly mastered the art of trade. A Susquehannock party claiming to have authority ceded the land (maybe belonging to other people), to one William Claiborne. Many arguments ensued. Typical of dominant governments, England settled the matter in 1638 by putting its foot down and forfeiting the land to its own George Calvert (1605-1675), Second Lord Baltimore.

"Lord Baltimore assigned the land to George Buchanan, one of several original commissioners responsible for the establishment of Baltimore City. The Buchanan-Rogers family then cultivated the area as a country estate and plantation."

Eventually, England lost the property in what was to be known as the American War for Independence, confirmed by the War of 1812 and celebrated on Maryland DMV license plates remembering when Maryland aspired to be a freer state.

The land for Druid Hill Park was purchased around 1860 when the nation's city dwellers were passionate about developing large, landscaped urban parks for their enjoyment. Before that, garden cemeteries such as Mount Hope Cemetery, Bangor, ME were popular urban resorts.

America's interest in picturesque gardens was informed by European Romantic ideals as expressed in Edmund Burke's Philosophical Enquiry into the Origin of Our Ideas of the Sublime and the Beautiful, William Gilpin's Observations on the River Wye..., Paris' Bois de Vincennes and Bois de Boulogne, and London's Hyde Park. New York's Central Park is a notable American example of those influences.


Rowhouses on Auchentoroly Terrace
In 1888, the newly completed Baltimore Conservatory was within sight of some of the city's finest homes in what is now the Parkview/Woodbrook neighborhood. Mansions built by John Morris Orem, a Baltimore dry goods magnate, were constructed (c.1860-1876) facing Auchentoroly Terrace. Magnificent rowhouses with diverse, intricate architectural features faced the park. Most of them still survive, but age and abuse have taken their toll. Along with Baltimore City, the Baltimore Conservatory suffered financial setbacks during years of decline.

Around the turn of the 21st century, the conservatory was scheduled for renovation. Money became available. The Baltimore Conservatory was renamed in honor of Delegate Howard Peters Rawlings (1937-2003). Rawlings was the first African-American to chair the powerful Appropriations Committee of the Maryland House of Delegates. Read more about "Pete" Rawlings at Wikipedia.

The Howard Peters Rawlings Conservatory consists of five "houses": the original Palm House, the Orchid Room, Tropical House, Mediterranean House and Desert House.

The original Palm House is the most imposing structure. Though relatively small in comparison to some conservatories, it has contained a fine collection including the Bismarck palm (Bismarkia nobilis), European fan palm (Chamaerops humilis), cat palm (Chamaedorea cataractarum), Christmas palm (Adonidia merrillii), dwarf coconut palm (Cocos nucifera var. ), metallic palm (Chamaedorea metallica), lady palm (Rhapis excelsa), Fiji fan palm (Pritchardia pacifica), Chinese fan palm (Livistona chinensis), bottle palm (Hyophorbe lagenicaulis), and foxtail palm (Wodyetia bifurcata).


The modest Orchid Room exhibits a changing exhibit of flowering epiphytes. Orchid enthusiasts will find plenty in bloom.

Visitors to the Tropical House will be acquainted with a diverse collection of species both familiar and unfamiliar. (Follow links for pictures.) The ginger family (Zingiberaceae) is very well represented with Red Tower ginger (Costus comosus),Costus curvibracteatus 'Green Mountain', Variegated Spiral ginger (Costus amazonicus variegata), Torch ginger (Etlingera elatior 'Thompsonae') and Butterfly ginger (Hedychium coronarium). Two species, Creeping fig (Ficus pumila) and Spikemoss (Selaginella kraussiana) are at their best as ground covers. Other favorite tropicals include:
Blushing Bromeliad (Neoregelia carolinae 'Tricolor')
Firecracker shrub (Hamelia patens)
Philodendron 'Prince of Orange'
Plumeria
Red Passionflower (Passiflora coccinea)

Bird-of-Paradise (Strelitzia reginae)
Chenille Plant (Acalypha hispida)
Bananas! (Musa spp.)
While the Tropical House is literally dripping with humidity, the sound of fountains in the Mediterranean House provides sensible refreshment in its semi-arid environment. The good collection of suitable trees, shrubs and herbs include:

Shoestring Acacia (Acacia stenophylla)
Olive (Olea europaea)
Variegated Oleander (Nerium oleander 'Variegata')
Germander (Teucrium chamaedrys)
Deserts are among the harshest places on earth, yet they are habitable sometimes by creatures with the most bizarre appearances. You'll discover lots of them in the Desert House, such as:

Tortoise plant (Dioscoria macrostachya)
Hedgehog Agave (Agave stricta)
African Ocotillo (Alluaudia procera)
Euphorbia baioensis
Brain Cactus (Mammilaria elongata 'Cristata')
Feather Cactus (Mamillaria plumosa)
Panda plant (Kalanchoe tomentosa)
Galapagos Prickly Pear (Opuntia galapageia)
Bunny Ears Cactus (Opuntia macrodasys)
Old Man Cactus (Oreocereus spp.)
Madagascar Palm (Pachypodium lameri)
 
The botanical garden adjoining the Baltimore Conservatory is quite small, but good displays of some new plants will interest any gardener.

Surrounding the conservatory, Druid Hill Park offers other cultural and recreational opportunities including the developing East Coast Greenway. which passes by the conservatory's front door. Avid bicyclists and serious pedestrians take note!

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Thursday, August 9, 2012

You Will Know It's Euphorbia By Its Glands

Euphorbia characis 'Glacier Blue' PP19027

Euphorbia is one of the world's largest genera with over 2000 known species. They're so diverse in appearance you'd hardly know they are all related. Compare the popular poinsettia (Euphorbia pulcherrima) to Euphorbia canariensis to Euphorbia milii to Euphorbia serrata.

See what I mean? You might even have some growing in your yard like the Euphorbia cyathopora under my grape vines or Euphorbia maculata among the squash. Regardless of their differences, they all share characteristics with one called Euphorbia antiquorum, the type species. If you don't have one handy to compare, you'll know you've got Euphorbia by its glands. You might need a magnifying glass.

Carl Linneaus (1707-1778) devised the system of sorting and organizing plants according to their sexual apparatus. A better method was never contrived, nor shall be.

Euphorbia flowers are surrounded by modified leaves called bracts. The Christmas poinsettia is a good example. Those big floppy red things are not flowers, but bracts. In other words, they're false flowers. If you peer between the bracts, you'll find the true flowers. They're tiny. Each euphorbia flower is uni-sexual, either male or female. Sometimes both sexes occur on the same plant; sometimes on different plants. Anyway, euphorbia flowers have glands. The horn-shaped glands of E. amygdaloides are good examples. All euphorbia glands are not horn-shaped, but you get the idea.

Euphorbias also share another trait: sticky, milky sap. Depending on the species, the sap (latex) can be very caustic and even poisonous. Contact with skin, to say nothing of the eyes and sensitive tissue, may be very irritating. Ingesting it can make one throw up, or worse. For this reason, euphorbias are often called "spurge." Rhymes with "purge."

Ironically, the name Euphorbia is derived from two Greek words combined meaning "good pasture." But the genus wasn't named because of its edibility. It was named to honor Euphorbus (Dr. Goodpasture), the personal physician of King Juba II of Numidia. Juba (c. 50BC - 23AD) married the daughter of Anthony and Cleopatra. Numidia was in North Africa.

Juba was a scholar and best-selling author of books on history, natural history, geography, travel, language and the arts. It was natural that he named a plant known to be a powerful laxative for his doctor. Over 1700 years later, Linneaus could do no better, so he gave the name to the entire genus.

Euphorbia is distributed world-wide. Over 60 species thrive in North America. Whether native or introduced, euphorbias grow in virtually every state and province in the U.S. and  Canada.

Euphorbia enthusiasts may choose their favorites for many reasons: their floral beauty, foliage, large size, small size, drought-tolerance, low maintenance, or because some look just plain weird. There's a euphorbia for everyone.

One might wonder whether euphorbias are suitable plants for the home and garden considering the troubling sap. Certainly any gardener should learn about plants and their possible hazards before growing them. But one thing I've observed about Euphorbia is the more formidable ones sport menacing spines that say, "Don't mess with me without gloves!" With that in mind, take care and have fun.

With so many different species, it would be difficult to summarize planting details and growing conditions. But as time goes by, I'll detail a few of them in future articles.

Until then, you can learn more about them at The International Euphorbia Society.

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Tuesday, February 14, 2012

"There's something in these hills" - The South Carolina Botanical Garden at Clemson University


South Carolina Botanical Garden entrance - Clemson University

“There's something in these hills . . . the ability of an institution through the unending dedication and greatness of its people — its administration, its faculty, its staff, its students and its alumni — to impart to all it touches a respect, an admiration, an affection that stand firm in disquieting times when things around it give impressions of coming unglued… Yes, there's something in these hills where the Blue Ridge yawns its greatness.
— Joe Sherman, Clemson University, Class of 1934, Director of Public and Alumni Relations

Sherman’s words, written in 1969, are as relevant today as they were then. The story of Clemson University is, to state the obvious, an inspiring one. The people and the place have made it so.
The place, at the foot of the Blue Ridge Mountains, was the site of Fort Rutledge, built in 1776. The fort was the idea of  General Andrew Williamson who was in command of the colonial forces in the area during the Revolutionary War. Williamson requested Governor John Rutledge for money to erect a defensive fort against British forces and allied Cherokees. His request was granted, probably because he promised to name the fort in honor of the governor.

The property was later owned by the John E. Calhoun family and descendants, who worked it as the Fort Hill Plantation.  In 1888, Thomas G. Clemson, the widower of Calhoun heiress, Anna Maria Calhoun, honored his wife’s desires and willed the property for the establishment of an agricultural college. The college opened in 1893 as an all-male military academy, later became co-educational, and eventually attained university status.

Part of Clemson’s story includes that of the South Carolina Botanical Garden. The garden began in 1958 as a camellia preserve adjacent to the Calhoun plantation, and has since grown to include over 295 acres of landscaped gardens and woodlands.  With so much to see, I recommend that you geta map online and print it off, or from the Hanson Discovery Center.  A paved drive leads to it from the main entrance.  While you’re there, you should take in the Campbell Geology Museum, which is landscaped to resemble a western mine. The Discovery Center and Geology Museum were closed the day I visited, but I thoroughly enjoyed walking around, viewing mineral displays, cacti and succulents in arid settings, manicured landscapes and container gardens.

The main parking lot on Pearman Boulevard provides a fine overlook of the Heritage Gardens. The Heritage Garden introduces visitors to the history of Clemson, principally its years as a military school, through a series of bronze reliefs and plaques within the Golden Tigers and Class of ’42 Cadet Life Garden. The complex includes trellised walkways, an amphitheater, and the colorful Caboose Garden (Class of ’39), dominated by a restored train caboose.

From there, visitors can meander through woodland gardens and landscaped open spaces via a system of winding trails. Informative signs mark the sections and give insight into the purposeful designs. Most of the gardens seem to have been partially funded by patrons, whose names they bear.
Near the entrance, the Hopkins Wildlife Habitat Garden displays plants and planting combinations that one might use, even in a home landscape, to provide food, water and shelter for wildlife. It’s a great place for children to watch for little creatures.

The Flower Display Garden is certain to provide ideas for the home landscape. Carefully planned combinations of annuals, perennials, shrubs and ornamental trees are delightful and thought-provoking.

The nearby Miller Dwarf Conifer Collection displays lovely cultivars that could easily be included in suburban gardens. Similarly, the adjacent Van Blaricom Xeriscape Garden demonstrates within its attractive panorama how to xeriscape, i.e. to landscape with plants, such as sedum, that have low moisture requirements.

The South Carolina Botanical Garden began as a camellia collection near what is now the football field. It was moved to its present location on the banks of a duck pond. The Camellia Trail is best visited from November through April when they are in bloom. Unfortunately, I visited the Camellia Trail in summer, but the scenery was pleasant.

From the camellia collection, the trail winds downhill to cross the Earthen Bridge. The bridge serves not only to cross a small stream by the duck pond, but as a functional sculpture.

Within the botanical garden is the historic Hanover House, and the Heirloom Vegetable Garden behind it. The Hanover House (circa 1716) was originally situated in Berkeley County, SC and was the home of French Huguenot, Paul de St. Julien. Threatened with being inundated by the waters of Lake Moultrie in 1914, it was moved to the Clemson campus. Ironically, much of Clemson’s campus was also threatened later with inundation by the creation of Lake Hartwell by the U.S. Army Corps of Engineers.

Education is at the heart of the South Carolina Botanical Garden, and it certainly extends to young children. Several gardens located in close proximity meet their needs: the Peter Rabbit Garden, Butterfly Garden, Ethnobotany Garden, Food for Thought Garden, and Pollinator Border. I loved them all, and admired the creative minds of designers who were able even to make a large propane tank look like it belonged.

The trail system continues through woodlands, over small streams, and to nature-based sculptures such as The Crucible. One might come upon it without a map in hand and think it’s a historic relic, perhaps a source of water for Cherokee people or early settlers who lived nearby. In a sense it is a historic relic, but not so old. The Crucible was installed in 1995 by sculptor Herb Parker.

Natural Dialogue is another nature-based sculpture that you should visit. Stop to think.

My wanderings eventually brought me to the Hunt Cabin (circa 1826). It originally stood near Seneca, SC, but, when threatened with demolition, was moved to the Clemson campus in 1935. The setting is appropriate, and seems original. You’ll get a glimpse of 19th century life, and read about the hospitality that was shown there, even to scoundrels like William T. Sherman (not related to Joe, I hope).

Returning to my vehicle, I strolled through the Charles and Betty Cruickshank Hosta Garden, taking lots of pictures as I went.  Hostas are among the most popular perennials in American gardens. The Cruickshank Hosta Garden is an official American Hosta Society Display Garden, so you’ll see plenty of them. Keep your camera clicking as you examine some you might want for your own perennial border.

These highlights are but a few of the many you can enjoy in the South Carolina Botanical Garden. Though there were plenty of visitors exploring the grounds, I appreciated the much needed sense of serenity that we often need “in disquieting times” when the world seems like it’s “coming unglued.” Yes, “there’s something in these hills” for you.

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Friday, July 23, 2010

A Close Look At Echeveria


Take a walk in the countryside and look closely at what grows around you.  There are botanical wonders practically beneath your feet.  The best way to study a plant closely is to sense it as an artist.  It doesn't matter whether you think you are an artist.  Take time to discover it entirely.  You'll find that when you come to really know something as it is, your appreciation will grow immeasurably.


Atanasio Echeverría y Godoy was such an artist.  A native Mexican, he accompanied the Sessé and Mociño expedition through Mexico (1787-1803) to inventory the country's flora and fauna.  Echeverría's drawings and watercolors record the minutest details of his subjects with accuracy and sensitivity.  Plant species perhaps considered common by many he rendered notable.

Robert Runyon 1881-1968) was another artist who studied his surroundings meticulously.  A native Kentuckian, he moved to Texas in 1908 after the death of his wife.  By 1910 he had established himself in Brownsville as a successful commercial photographer, devoting his work to familiar subjects, souvenir photos for tourists, and photos of sensational events such as the Mexican Revolution.  Gradually his interest began to include indigenous plants.  He became an expert on the flora of northern Mexico and southern Texas.  In the early 1930s, he began to devote his energies to his interests as a naturalist and aspiring politician.  Runyon published two botanical works, Texas Cacti (1930) and Vernacular Names of Plants Indigenous to the Lower Rio Grande Valley (1938).  J. Frank Dobie, a folklorist and friend of Runyon, said of him, "You have to admire a man like Runyon, who cuts off a little hunk of the world and dedicates a lifetime to its study."

It's fitting that plants of the region bear the names of Echeverría and Runyon.

The genus, Echeveria (pronounced ech-eh-VER-ee-ah), includes about 40 species of plants native to Mexico, Central America and parts of South America.  They are characterized by their thick, succulent leaves arranged in rosettes.  The leaves store water, so they're very drought tolerant. They grow quickly in full sun and in almost any soil type as long as it is slightly acidic or neutral and well-drained.  Sandy or rocky soil is perfect.  The common name, "Mexican Hens-and-chicks", was given because of the plants resemble Sempervivum, which is also called "Hens-and-chicks."  Smaller plants (chicks) that are produced on short side-shoots are clustered very close to the parent plant.

The species bearing Runyon's name is E. runyonii (pronounced run-YON-ee-eye), one of the more attractive and popular members of the genus.  E. runyonii 'Topsy Turvy' is a choice variety.

Echeverias thrive in difficult, dry areas.  Hardiness varies, but they are generally much less cold-hardy than Sempervivum, surviving in USDA climate zones 8 or 9 through 11.  They vary in foliage shape, color and growth height.  Tubular flowers are produced from summer to fall on succulent stems.  Hummingbirds love them.

They are are often used as edging plants, in rock gardens, and in containers.  Gardeners in colder regions can grow them successfully indoors.  Being drought-tolerant, they are excellent for xeriscaping.

Plant Echeverias about 10” to 15" apart in well-drained soil with pH ranging from 5.6 to 7.5.  To determine whether your soil is hospitable, take a sample to your nearby Cooperative Extension Service office for analysis.

Pint-sized plants usually produce a few "chicks" within the year.  They may be divided and replanted every few years to maintain compactness.  Some species benefit from light applications of a balanced fertilizer.  Let the ground dry between irrigation.

Echeverias are fascinating plants to the eye and to the touch.  With so many ways to grow them, any gardener can find a place to use and enjoy them.

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Wednesday, February 24, 2010

Resplendent Purple Queen


Plant names often contain emotional suggestions - reasonable enough since plants are named by impassioned beings.  So it is with Wandering Jew.  Known botanically as Tradescantia pallida (pronounced "trad-es-KAN-tee-uh PAL-lid-uh), the genus is named in honor of one or both of the John Tradescants.  Father and son, they were naturalists, botanists, gardeners and plant collectors.  It's very likely that the elder Tradescant (d. 1638) was considered when the genus was named.

Both Tradescants knew tragedy during their careers.  The elder was gardener to the 1st Duke of Buckingham, until the duke's assassination.  He was then employed by Charles I, king of England.  When the elder died, John the younger succeeded his father in service to Charles I and Queen Henrietta Maria until the Queen fled because of England's Civil War.

The genus contains over 70 species,  3 of which are commonly called "Wandering Jew."  These species, including T. pallida, are trailing succulent plants that set down roots where the nodes touch soil.  As the plants progress, they form extensive ground covers.  That habit undoubtedly reminded someone of the Jewish diaspora or a doleful medieval legend, so the name connoting tragedy was bestowed.  The appellation continues to stir passions.

Tradescantia pallida also bears other common names: Purple Heart, Purple Queen.  Both hint at sadness.

Purple Queen is a fairly common plant in warm climates and often grown indoors in colder ones.  It's native to Mexico near the Gulf coast.  The species name, pallida, means pale.  But pale it is not, and there is nothing sad about it.  Succulent trailing stems and thick, juicy, purple leaves store up water for emergencies.  Pink flowers are produced throughout the growing season.

The plant grows quickly up to 18" high in full sun or partial shade and in almost any soil type as long as it is well-drained.  Each plant spreads about 12", but as it roots along the stem, the area covered may be much greater.  Because it is drought-tolerant, T. pallida is well-suited as a ground cover in dry areas, so is ideal for xeriscaping.

A ground cover of Purple Queen is rich in appearance, like a royal robe laid out.  It's also good for container gardening and hanging baskets, especially when accompanied by suitable companion plants of varying heights, textures and complementary colors, such as red, pink, white, yellow and green.

In addition to outdoor uses, it is also great for growing indoors.  In fact, Purple Queen is considered to be exceptionally effective in removing pollutants from the air.  Grow a few plants in a sunny window and breathe easier!

Purple Queen is hardy from USDA climate zone 7 through 11.  Frost may destroy the top-growth, but the plants revive when warm weather returns.  Recommended pH ranges from 5.5 to 7.5.  Space about 12" to 18" apart.

Resplendent, easy to grow and simple to maintain, you'll be quite happy to have Purple Queen in your colorful garden.

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Monday, February 22, 2010

No-Fuss Houseleeks


Drive through the countryside on state and county roads, or better yet, get out and walk.  Enjoy a slower pace and pay closer attention to what folks are growing in their yards.  I bet you'll see Houseleeks, sometimes called Hens-and-Chicks. 

Properly known as Sempervivum (pronounced sem-per-VEE-vum), meaning "always living", you may see them spilling out of flower pots, planters and even from old kettles.  I once saw some growing out of  a pair of old boots filled with potting soil.  My grandmother grew them in common concrete troughs flanking the front steps.  I didn't think much about them then, but I've come to appreciate them since.  I was told when I was a child that houseleeks, if grown close by, were supposed to protect buildings from being struck by lightening, but was assured it was only a tale.

Houseleeks are so common you'd think they're from around here, but they are native to parts of southern and eastern Europe, around the Mediterranean, north Africa and parts of western Asia.  There are about 40 species in the genus, and many more hybrids - some of natural origin.

All of them are perennials with thick, succulent leaves arranged in rosettes.  The leaves store water, so they're very drought tolerant. They grow quickly in full sun and in almost any poor soil type as long as it is slightly acidic or neutral and well-drained.  Sandy or rocky soil is ideal.  The name, "Hens-and-chicks", was undoubtedly bestowed because of the smaller plants that are produced on short side-shoots around the parent plant.  I should mention that "always living" is a bit misleading for the parent plant dies after flowering.  But because "chicks" are produced in abundance, there are always houseleeks to enjoy.  I have no idea why they are called "houseleeks", but I understand that one variety is eaten in Taiwan.

Their ability to thrive in difficult, dry areas is well-known.  Hardiness varies, but some varieties will thrive into USDA climate zones 2 and 3.  Virtually all are hardy from zone 5 through 9.  Houseleeks vary primarily in foliage shape, color and growth height, though the differences are not too great.  Height is usually 6" or less, and they can be expected to spread up to 12" within a few seasons.  They are are often used as edging plants, in rock gardens, and in containers.  I believe they would be very appropriate for "green roof" use.  Houseleek collectors are always on the lookout for new color shades.

Plant houseleeks about 6” to 12" apart.  Pint-sized plants usually produce a few "chicks" within the year.  They may be divided every 3 to 4 years to maintain compactness.  In the spring, you can propagate through stem cutting or division. It’s easy to pull a rosette off the main plant and transplant the small rosette to a new area in the garden.  Let the ground dry between waterings.  Lower growing varieties tend to be dense and choke out weeds, but if soil is fertile, neighboring plants grow faster and obscure the humble houseleeks.

Not only are they drought-tolerant, houseleeks are not bothered by most pests including deer and rabbits.

My grandmother liked "no-fuss" plants and houseleeks fit the bill.  I bet you will enjoy them, too.

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Thursday, August 6, 2009

Chill Out With Delosperma

Delosperma is a delightful evergreen ground cover that only came to my attention within the last few years. It is a succulent, low-growing perennial plant that lends a fresh, cool appearance even during hot weather. These plants are becoming widely known mostly due to the work of Dr. Panayoti Kelaidis of the Denver Botanic Garden.

Delosperma (pronounced del-o-SPUR-ma), commonly called "ice-plant" is native to South Africa where it grows in moderate to dry soils even in high mountain areas. Nevertheless it does nicely in much of the U.S. in climate zones 5 through 9.

The name, Delosperma, means "obvious seed", for they are rather large in relation to the rest of the flower. The common name, "ice plant", refers to the watery, succulent appearance and the icy green color of the foliage, along with other plant properties.

Delosperma is suitable for ground covers, rock gardens, alpine gardens, cactus and succulent gardens, hanging baskets, sunny perennial gardens and borders when planted with species having similar requirements.

There are about 14 species of Delosperma, but only a few are readily available commercially.

Delosperma basuticum thrives in USDA climate zones 5 through 9. Some report success into zone 11. Though I haven't been able to confirm this, I believe the species is named for Basotho, (now known as Lesotho) a region in south Africa where it is native. Maximum height is 3". Yellow to white flowers are produced all summer and into fall. It needs well-drained garden soil with pH ranging from slightly acid to slighty alkaline. It is drought tolerant. Mature plants grow to 12" across. It will produce a beautiful carpet in optimal conditions. Plant in full sun. Space at 8" to 12".

Delosperma cooperi is named for Dr. James G. Cooper(1830-1902), conchologist, geologist, ornithologist, zoologist. Dr. Cooper contributed a great deal to understanding the geology, flora and fauna of the Pacific Northwesst.

D. cooperi, also known as Trailing Ice Plant or Hardy Ice Plant, thrives in USDA climate zones 5 through 9. Flowers are pink to magenta.

D. x 'Mesa Verde', also known as D. x 'Kelaidis', is a new cultivar resulting from pollination by Dr. Kelaidis, mentioned before. It is well-worth seeking. 'Mesa Verde' has been reported to do well in USDA climate zones 4 through 9.

Delosperma nubigenum, which shares its common names with D. cooperi, is similar in habit to D. basuticum and D. cooperi. "Nubigenum" means "born in clouds", referring to its high-altitude native habitat. One might think that it preferred only cool climates, but it also thrives in USDA climate zones 5 through 9 or 10. Flower color is yellow.

Prepare the planting bed for Delosperma by cultivating at least 6" deep, removing all traces of weeds. Take a soil sample to your nearby Cooperative Extension Service office for testing. Follow their recommendations. Compacted soil should be cultivated to 10" deep. Composted manure may be incorporated into the soil. Fertilizer may be used. If you choose to do so, incorporate fertilizer per the soil test recommendations, or 5-10-15 fertilizer at a rate of no more than 2 lbs. per 100 square feet, into the top 4" to 6" of soil. Avoid synthetic fertilizers contacting any part of your plants.

Container-grown Delosperma can be planted any time you have a shovel handy, but may require monitoring of soil moisture conditions during hot weather. But Delosperma is very forgiving.

Space plants 8" to 12" apart, as indicated earlier. Keep in mind that my spacing recommendations are approximate. If you want them to fill in quickly, plant closer together. If you have plenty of time and patience but less money, plant them farther apart. Dig planting holes into the cultivated soil a little less deep than the depth of the growing container. Place the plants into the holes and back-fill. Press soil around the roots. Do not cover the root balls with soil. The tops should be slightly exposed. Add a top-dressing of mulch around the plants, not on top of them, about 2" to 4" deep. Irrigate thoroughly.

Maintenance is minimal. A little weeding and occasional watering should do the trick.

For a low-maintenance, low-growing colorful groundcover that is drought-tolerant, consider Delosperma.

Return to Delosperma at GoGardenNow.com.