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Learn how to tackle yellow starthistle


Sacramento Digs Gardening logo
Sacramento Digs Gardening
PUBLISHED NOV 12, 2019
Yellow starthistle ( Centaurea solstitialis ) in bloom
has nasty
spikes.  At top, the seed dispersal stage.
(Photo courtesy UC Integrated
Pest Management)

I nvasive weed is topic of El Dorado County workshop

What’s the worst invasive plant? For many farmers as well as suburban gardeners, it’s yellow starthistle.

Learn how to conquer this nasty weed during a special presentation at 9 a.m. Saturday, Nov. 16. Presented by the UC Cooperative Extension Master Gardeners of El Dorado County, this free workshop will be held in the Hearing Room at Government Center Building C, 2850 Fairlane Court,
Placerville.

Master gardener Steve Savage will tell how this invasive weed has taken over large portions of California’s range land and urban landscape.

Learn about its origins, how it moves, why it is so difficult to control, how to overcome these difficulties, various control methods and how to design an effective control program.

Details and directions: http://mgeldorado.ucanr.edu/ or call 530-621-5512.

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Garden Checklist for week of Dec. 8

Make the most of dry weather while we have it this week. Rain is returning.

* Rake leaves away from storm drains and gutters. Recycle those leaves as mulch or add to compost.

* It’s not too late to plant something. Seed wildflowers and plant such spring bloomers as sweet pea, sweet alyssum and bachelor buttons.

* Trees and shrubs can be planted now, especially bare-root varieties such as fruit trees or rose bushes. This gives them plenty of time for root development before spring growth. They also benefit from winter rains.

* Plant bare-root berries, kiwifruit, grapes, artichokes, horseradish and rhubarb.

* Set out cool-weather annuals such as pansies and snapdragons.

* Lettuce, cabbage and broccoli also can be planted now.

* Brighten the holidays with winter bloomers such as poinsettias, amaryllis, calendulas, Iceland poppies, pansies and primroses.

* Keep poinsettias in a sunny, warm location; bring them inside at night or if there’s rain.

* Plant garlic and onions.

* Prune non-flowering trees and shrubs while they’re dormant.

* Clean and sharpen garden tools before storing for the winter.

* Mulch, water and cover tender plants to protect them during threat of frost. Succulent plants are at particular risk if temperatures drop below freezing. Make sure to remove coverings during the day.

* Rake and remove dead leaves and stems from dormant perennials.

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