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Take a break from the heat with an online class or video

Resources to view during those too-hot-to-garden times

Bee on lavender blossom
Pollinators are the subject of an upcoming webinar from the Placer County master gardeners. (Photo:
Kathy Morrison)

Around here, mornings in spring are made for gardening. But if — when! — the weather heats up, ome inside and spend some time online with the many resources available from the University of California Agriculture and Natural Resources, including the UC Cooperative Extension.

Check out these online events and webinars:

-- Principles of Propagation Zoom Workshop, 10:30-11:30 a.m. Saturday, May 8, presented by the Placer County master gardeners.  As they note: "Propagation is the term for the multiplication of plants, either by natural means or by the actions of the nurseryman or gardener. This introductory workshop will show you some of the many ways you can propagate plants." Click here for the Zoom  link and password .

-- Heat Illness Prevention and Environmental Hazards in Your Garden, 9 a.m. to 10:30 a.m. Wednesday, May 12. This timely virtual presentation is from the El Dorado County master gardeners. "Prevention is key to avoiding heat related illnesses and potential injuries and illnesses associated with environmental hazards, such as rattlesnakes, poisonous plants, skin cancer, insect bites, etc.  Join Master Gardener Cathie Mankins to learn tips on preventing illnesses and injuries in your garden." Registration is free but required .

-- Springtime Household Pests, 1 p.m. Thursday, May 20. This 1-hour webinar is part of a new monthly series from the UC Statewide Integrated Pest Management Program.  "This webinar will cover identification and management of pests encountered in the home during springtime including carpet beetles, fleas, and fungus gnats associated with houseplants." The present is Dr. Andrew Sutherland, Area Urban IPM Advisor, San Francisco Bay Area. Free, but registration required here . The June 17 webinar will be "IM for Rodents." For more on the IPM series, visit this page .

-- Plant It and They Will Come: Planning for Pollinators Zoom Workshop, 10:30-11:30 a.m. Saturday, May 22, also by the Placer County master gardeners. "Learn how to attract and support bees, butterflies and other pollinators by choosing a palette of plants that provide a living landscape which offers nourishment and nesting places for these creatures that enliven our gardens, as well as provide pollination services. It’s a win-win for humans and pollinators!" Go here for the Zoom link and password .

Several view-anytime videos are linked from the Sacramento County master gardeners video library . Here are a few that are relevant right now:

"Better Pollination In The Home Vegetable Garden," from the Honey Bee Haven at UC Davis.

"Thinning Fruit on Your Fruit Trees," by the Sacramento County master gardeners.

"Aphid-eating Insects in Action!" The focus is on beneficial insects that devour (and I mean devour, wow!) bad bugs, from UC IPM.


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Dig In: Garden checklist for week of Jan. 29

Bundle up and get work done!

* Prune, prune, prune. Now is the time to cut back most deciduous trees and shrubs. The exceptions are spring-flowering shrubs such as lilacs.

* Now is the time to prune fruit trees, except apricot and cherry trees. Clean up leaves and debris around the trees to prevent the spread of disease.

* Prune roses, even if they’re still trying to bloom or sprouting new growth. Strip off any remaining leaves, so the bush will be able to put out new growth in early spring.

* Prune Christmas camellias (Camellia sasanqua), the early-flowering varieties, after their bloom. They don’t need much, but selective pruning can promote bushiness, upright growth and more bloom next winter. Feed with an acid-type fertilizer. But don’t feed your Japonica camellias until after they finish blooming next month. Feeding while camellias are in bloom may cause them to drop unopened buds.

* Clean up leaves and debris around your newly pruned roses and shrubs. Put down fresh mulch or bark to keep roots cozy.

* Apply horticultural oil to fruit trees to control scale, mites and aphids. Oils need 24 hours of dry weather after application to be effective.

* This is also the time to spray a copper-based oil to peach and nectarine trees to fight leaf curl. Avoid spraying on windy days.

* Divide daylilies, Shasta daisies and other perennials.

* Cut back and divide chrysanthemums.

* Plant bare-root roses, trees and shrubs.

* Transplant pansies, violas, calendulas, English daisies, snapdragons and fairy primroses.

* In the vegetable garden, plant fava beans, head lettuce, mustard, onion sets, radicchio and radishes.

* Plant bare-root asparagus and root divisions of rhubarb.

* In the bulb department, plant callas, anemones, ranunculus and gladiolus for bloom from late spring into summer.

* Plant blooming azaleas, camellias and rhododendrons. If you’re shopping for these beautiful landscape plants, you can now find them in full flower at local nurseries.

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