Weed control is the No. 1 pest problem for farmers. Pests include insects, diseases and weeds, not just insects.
Bob Morris is a horticulture expert and professor emeritus of the University of Nevada, Las Vegas. Visit his blog at xtremehorticulture.blogspot.com.
The three worst weeds to control in home landscapes are common Bermuda grass, nutgrass and palm seedlings. Controlling common Bermuda grass and nutgrass organically requires persistence — knocking them back as soon as they appear until they finally start surrendering around late summer.
Dormant oil sprays are applied on warm, windless days during the winter to trees and shrubs after they are pruned. That’s when insects susceptible to these sprays are most vulnerable.
Lumps or bumps on the trunk are probably epicormic nodules, places on the trunk covered by thin bark that have a cluster of buds under it. These buds will sometimes grow into shoots. On some trees removing these shoots as soon as they are seen may cause these nodules to stop producing shoots or fewer of them.
I like deals. Buying a large tree in a box and getting it planted for free is a good deal. Just have it done right.
It’s a good idea in our climate to delay the final pruning of wine grapes and table grapes until freezing, dry and windy weather has passed.
Final pruning of fruit trees for less-experienced pruners is best delayed until flowers appear. It’s a lot easier to see where fruit will be produced when actual flowers are seen.
This winter, the valley hasn’t had any freezing temperatures at lower elevations. But let’s not forget about chilling injury (damage occurring somewhere around 50 to 45 degrees Fahrenheit) in new growth and fruits of tropical plants like tomatoes.