As the summer sun climbs high and gardens brim with life, many gardeners wonder: Should I fertilize during the heat of summer, or will I do more harm than good? The answer, like much in gardening, lies in understanding your plants, your soil, and the climate you’re working with.
Summer fertilization can be beneficial, especially for heavy feeders like tomatoes, squash, and container-grown plants that rapidly deplete soil nutrients. However, fertilizing in the peak of summer heat must be done with care. Heat-stressed plants, already struggling to retain moisture and function properly, may react poorly to a sudden influx of nitrogen—resulting in scorched leaves or accelerated dehydration. Slow-release organic fertilizers, compost teas, and diluted liquid feeds are gentler options that can give your plants the boost they need without overwhelming them. Always water deeply before and after applying any fertilizer to help nutrients reach the root zone and reduce the risk of root burn.
Ultimately, the best approach is to test your soil, observe your plants, and consider the temperature. If leaves are green and growth is steady, hold off. If your plants look pale or sluggish despite adequate watering, a mid-season feed might be just the ticket. Like a good Southern supper, timing and moderation make all the difference.
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