- Author: Anne E Schellman
Still a few spaces left for our hands-on workshop for Saturday, October 26, 2019 from 9:30 a.m. to noon. Learn all about various types of succulents, how to propagate them (make more) and succulent care. You'll also put together a gorgeous succulent box to take home.
We will have coffee and a few goodies on hand. Sign up and bring a friend! Register and pay on our Classes and Workshops page.
- Author: Cheryl A. Wilen
Nurseries and garden centers often sell a wide range of plants for use in gardens and landscapes. As a consumer, you may manage a complex array of different landscape plantings, including woody trees and shrubs, woody ground cover beds, annual flower beds, herbaceous perennial beds, and mixed plantings. This complexity often makes weed management difficult. An integrated approach is the most economical and efficient way to control weeds, so knowing strategies for managing weeds in a variety of landscapes can help.
Woody Trees and Shrub Beds
Control perennial weeds before planting, although weed control can also be done after planting. Densely planted areas will reduce weeds. Geotextile (landscape) fabrics rather than black plastic used with a shallow layer of mulch will keep weeds from emerging. If you mulch without a geotextile base, the mulch layer must be thicker to prevent weed emergence.
If needed, you can use a preemergence herbicide to control annual weeds and supplement with hand weeding and spot applications of postemergence herbicides for weeds that are not well-controlled by hand weeding, such as perennial grasses.
Woody Ground Cover Beds
Mature, woody ground cover beds should exclude most weeds; however, when ground cover is just establishing, weed growth is likely. Perennial weeds must be controlled before planting, although perennial grasses may be selectively controlled after planting with a grass-selective herbicide like sethoxydim (Grass-Getter). Annual weeds may be controlled with mulch plus a preemergence herbicide but rooting of stolons in new plantings may be affected. You will need to supplement with some hand weeding.
Annual Flower Beds
A dense planting in annual flower beds will help shade out and compete with many weeds. Flower species should be carefully selected for weed management compatibility. Periodic cultivation at 3- to 4-week intervals and between flower beds plant rotations will also suppress weeds. Perennial weeds must be controlled before planting. Annual weeds can be controlled with mulches, preemergence herbicides, frequent cultivation, and/or hand weeding. Control perennial grasses with grass-selective herbicides like clethodim, sethoxydim, or fluazifop. Avoid nonselective herbicides in annual flower beds after planting.
Herbaceous Perennial Beds
Weed management options in herbaceous perennial beds are similar to those for annual flowers, except that it is more important to eradicate perennial weeds as there will be no opportunity to cultivate or renovate the bed for several years; and fewer species are included on herbicide labels. Geotextiles may be used in these types of plantings. Manage weeds with mulches and supplement with hand weeding. If needed, use preemergence herbicides after hand weeding.
Mixed Plantings of Woody and Herbaceous Plants
Weed management in mixed plantings is complex because of the diversity of species. Different areas of the bed could receive different weed treatments. Site preparation is critical because post-plant herbicide choices are few. Plant the woody species first and control perennial weeds in the first two growing seasons, then introduce the herbaceous species. Plant close together to shade the soil. Group plants within the bed that will receive similar weed management programs.
In most landscape situations, herbicides should not normally be needed by home gardeners. Mulching, removal by hand, and proper irrigation (pattern and amount of water) are sufficient in most cases. Find more information in the UC IPM Pest Notes: Weed Management in Landscapes.
[Originally published as "Managing Weeds in Landscapes" published in the Fall 2018 issue of the Retail Nursery and Garden Center IPM News.]
Curious to learn more about succulents? In this fun, hands-on workshop, you'll learn about different types of succulents, their care, and how to propagate them. Last, we'll help you create an attractive design with succulent cuttings in a small, hand-crafted wooden box (made by one of our Master Gardeners). You'll also go home with an assortment of extra cuttings for your landscape.
Where: Stanislaus County Agricultural Center, Harvest Hall Rooms D&E 3800 Cornucopia Way, Modesto, 95358.
When: Saturday, October 26, 2019 9:30 a.m.-12:00 p.m.
Cost: $25 (only 30 spaces available)
Questions? (209) 525-6862
Instructors: UCCE Stanislaus County Master Gardeners Roxanne Campbell, Terre Gouveia, and Rho Yare.
Register for Gardening with Succulents
- Author: Anne E Schellman
Pomegranate trees are often used in gardens and landscapes in Stanislaus County. They make a great tree and usually have relatively few problems. Recently, someone contacted the Master Gardener help line to describe some odd-looking insects she found on her tree, so we asked her to send a few photos. 
The insects are called leaffooted plant bugs. They use piercing-sucking mouthparts to feed on fruits, nuts, and ornamental plants. When they attack pomegranates, their feeding may cause the seeds inside to darken and wither. Large groupings of the bugs can leave behind an unattractive excrement on the fruit, although it is still safe to eat.
Adults overwinter in large groups this time of year, so we advised our caller to take a bucket of soapy water out to her tree and to brush the leaffooted bugs into it. This would help decrease the population before the adults could lay more eggs in spring. (up to 200!) We were impressed the caller was able to find the eggs and capture this image. Can you find them on this pomegranate twig below?
For more life cycle and management information, read the UC IPM Pest Notes: Leaffooted Bug. And remember, if you have a gardening or pest management question, you can call our help line at (209) 525-6802 or send us an email at ucmgstanislaus@ucanr.edu
- Author: Anne E Schellman
This past week, the UCCE Stanislaus County Master Gardeners held a class about pollinators and the plants they prefer. Speakers from Natural Resources Conservation Service and the Xerces Society helped the audience “meet” many local pollinators found in our county.
Everyone knows about honey bees, but many might not realize there are over 4,000 native bees in California nor be able to recognize them.
Pop Quiz
At the beginning of the class, one speaker showed the image above and asked the audience, “How many bees are in this photo?” Participants shouted out several numbers, but most didn't know the answer. Take a moment to view each insect and count the bees. How many did you find? The answer and insect identities are at the very bottom of the page.
Conservation
Education about pollinators is important so people can learn how to recognize bees and incorporate sustainable gardening practices that help protect them.
Our program plans to create a pollinator collection to have on display at events to help people learn how to recognize these helpful insects. We also plan to have more classes about pollinators throughout the county. In the meantime, you can consult the following pollinator resources.
Native bees and other pollinators
Xerces Society for Invertebrate Conservation
UC Berkeley Urban Bee Lab
Best plants for native bees and pollinators
Visit these sites for lists and information about plants native bees and butterflies prefer that provide pollen and nectar. Many local nurseries and garden centers also carry these plants.
California Native Plant Society
Plant California
Visit a Local Garden!
You can see a local pollinator garden by visiting the La Loma Native Garden located near downtown Modesto.
Answer
Six of the insects are bees!
- Fly
- Bumble bee
- Butterfly
- Sweat bee
- Grasshopper
- Mining bee
- Mason bee
- Honey bee
- Velvet ant (actually a wasp)
- Metallic green sweat bee
Special thanks to the Natural Resources Conservation Council and the Xerces Society for making this class possible. The first photo in this article is based on a study written in Frontiers in Ecology called Public support of bee conservation.
