100°F
weather icon Clear

Bob Morris

Bob Morris

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.

Over-pruning tomato plants could lead to sunburn

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.

Late afternoon direct sun can be damaging to roses

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

Wet, humid spring weather caused influx of aphids

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 can be destructive to yards

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.

Good tomato crop probably a result of cool spring weather

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.

THE LATEST
Slime mold fungus in lawn causes no harm

Slime mold fungi are particularly disgusting because they are gelatinous and, over time, change color if they’re left undisturbed. Slime molds can lay atop the grass and smother it.

Rabbits can kill tree by eating trunk

If rabbits ate the trunk of a tree in a complete circle around the trunk, it’s a goner. Let it sucker from the bottom and start a new tree from the suckers.

Woodchips should be used as mulch not amendment

Adding woodchips to the soil as an amendment has gained popularity largely because of social media. Woodchips applied to the soil surface as a mulch is OK, but mixing these into the soil can lead to problems if you aren’t careful.

Stay away from heirloom varieties of asparagus

Asparagus usually grows well here, but there are some differences among the varieties. Stay away from heirloom varieties such as Mary Washington because they don’t produce enough spears in any climate.

1 2 3 27