Southern California Coastal & Inland Valleys

April, 2011
Regional Report

Shows & Events

Around the World in 127 Acres
On Saturday, May 7, 1:30pm - 3:00pm, The Arboretum, 301 North Baldwin Avenue, Arcadia, presents "Around the World in 127 Acres: A Look at the Arboretum's Truly Cosmopolitan Plant Collections." Arboretum Botanical information consultant Frank McDonough will guide us through the South African collection and discuss how it's a guide for today's water conscious landscaping. $5 members, $7 non-members. For more information, go to http://www.arboretum.org or call 626-821-3222.

Clever Gardening Technique

Plant Flowers for More Beneficials
To encourage beneficial insects to populate your garden, provide them with their chosen foods and habitats. Many weeds, including lamb's-quarters, nettle, knotweed, pigweed, and cocklebur, as well as many cultivated annuals, perennials, and herbs, are food sources for two of the most important orders of beneficials -- wasps and flies. Most of these plants are members of two families, the Umbelliferae (Apiaceae) and the Compositae (Asteraceae). Plants in the Umbelliferae family, such as anise, carrot, caraway, coriander, dill, fennel and parsley, have many tiny flowers arranged in tight umbels. Compositae family members, such as black-eyed Susan, goldenrod, and strawflower, have central disc flowers surrounded by many ray petals. Mustard flowers attract lacewings (for aphid control) and parasitic wasps (for controlling cabbage caterpillars and codling moths; they don't bother people or pets). Rows or interplantings of these plants can support a large beneficial insect population.

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