You can harvest fruit from tomato plants when it’s hot, but they won’t set fruit again from new growth until the temperature drops back into the mid-90s. Either pull the tomato plants when they’re done producing and plant new ones from seed or prune the old ones back and let them flower and fruit again when it’s cooler.
Bob Morris is a horticulture expert living in Las Vegas and professor emeritus for the University of Nevada. Visit his blog at xtremehorticulture.blogspot.com. Send questions to Extremehort@aol.com.
Somewhat tender plants like roses and crape myrtle can handle the intense desert heat and sunlight if they are growing in soil amended with organics and the soil is covered with mulch that rots or decomposes. Roses and crape myrtle will struggle after a few years when planted in soils covered by rock
The high population of aphids this year was caused by our wet and humid spring weather. The fastest way to get rid of them is to drench the soil beneath the tree with a systemic insecticide diluted in a bucket of water.
Grasshoppers start cute and small with small appetites and jump from plant to plant. But as they grow bigger, their increased appetites cause more and more damage to landscapes.
Tomatoes stop setting fruit when air temperatures stay consistently above 95 degrees. The tomatoes that set earlier continue to grow and mature when it stays hot. If the air temperature drops below 95 for a couple of days, new flowers will again set fruit.
California or Mexican fan palms can make a mess in the yard. But date palms are different. Male date palms are less messy than female date palms.
Plant landscape trees in wet soil and keep plant roots wet during planting. The soil should stay wet for the first couple of days while these plants are getting established.
This is the time of year that leaf-footed plant bugs increase in numbers and infest your fruit trees and your vegetable garden. Cordless hand vacuum cleaners work great for sucking them up.
Crop rotation has been around for more than 150 years as a good management technique for reducing disease and fertilizer problems, whether you grow a small number of plants or large numbers.