- Author: Elizabeth E Grafton-Cardwell
Citrus trees remain a popular choice for home gardeners in California, largely due to their ease of care, beauty, and functionality for food and shade. However, backyard citrus can also be plagued by pests such as psyllids, leafminers, cottony cushion scale, and mealybugs.
Longtime readers of this blog will know that we have covered the/span>
Most citrus tree problems in home gardens can be solved by pruning the trees to allow better air flow and by controlling ants. Ants collect the honeydew produced by Asian citrus psyllid nymphs, mealybugs and/span>
Are you seeing cars, sidewalks, driveways, or other plants covered in sticky stuff, especially those under trees? This sticky substance, called honeydew, is produced by certain insects that excrete it when they feed on plants. Plant leaves look shiny and honeydew may be so thick that it drips off the leaves onto the ground or other plants underneath. And in some cases, a black, powdery fungus called sooty mold grows on it, causing the plant's leaves to look dirty.
We've written about quite a few of the insects that produce honeydew in our blog, so here is a list of the possible culprits that may be causing the mess this time of year:
The hackberry woolly aphid is a major pest on
Summer is all about being outdoors and enjoying camping, swimming, playing, and other activities with family and friends. But it's a real drag when pests such as ants, yellowjackets, or mosquitoes ruin the fun.
When you have a pest problem and want to find a solution quickly, it can be helpful to watch a short video that tells you what you can do. In UC IPM's Video Library, you will find over 30 helpful videos on these and other common pests that are active in summer or other times of the year.
1. Ants: Using a Sticky Barrier to Prevent Ants on Trees and Shrubs
Last Saturday, UC IPM staff greeted a swarm of visitors at their Picnic Day booth. Picnic Day, UC Davis' annual Open House event, invites people to visit the campus and interact with fun and educational exhibits. UC IPM has participated in Picnic Day for more than a decade and this year attracted visitors to their booth with live insects like hissing cockroaches, a termite colony, and crane flies. UC IPM staff answered many questions about pests, pesticides, and cleared up misconceptions about some common insects.
What did we talk with people about?