Selecting Plants for Pollinators A Regional Guide for Farmers, Land Managers, and Gardeners In the California Coastal Chaparral Forest and Shrub Province Along the Southern California and NAPPC Coast Table of CONTENTS Why Support Pollinators? 4 Getting Started 5 California Coastal Chaparral Forest 6 Meet the Pollinators 8 Plant Traits 10 Developing Plantings 12 Far ms 13 Public Lands 14 Home Landscapes 15 Bloom Periods 16 Plants That Attract Pollinators 18 Habitat Hints 20 This is one of several guides for Check list 22 different regions in the United States. We welcome your feedback to assist us in making the future Resources and Feedback 23 guides useful. Please contact us at [email protected] 2 Selecting Plants for Pollinators Selecting Plants for Pollinators A Regional Guide for Farmers, Land Managers, and Gardeners In the Ecological Region of the California Coastal Chaparral Forest and Shrub Province along the southern California Coast a nappc and Pollinator Partnership™ Publication This guide was funded by the National Fish and Wildlife Foundation, the C.S. Fund, the Plant Conservation Alliance, the U.S. Forest Service, and the Bureau of Land Management with oversight by the Pollinator Partnership™ (www.pollinator.org), in support of the North American Pollinator Protection Campaign (NAPPC–www.nappc.org). California Coastal Chaparral Forest and Shrub Province 3 Why support pollinators? In theIr 1996 book, the Forgotten PollInators, Buchmann and Nabhan estimated that animal pollinators are needed for the reproduction “ Farming feeds of 90% of flowering plants and one third of human food crops. Each of us depends on these industrious pollinators in a practical way to provide us with the wide range of foods we eat. In addition, pollinators are part of the the world, and intricate web that supports the biological diversity in natural ecosystems that helps sustain our quality of life. Abundant and healthy populations of pollinators can improve fruit set we must remember and quality, and increase fruit size. In farming situations this increases production per acre. In the wild, biodiversity increases and wildlife food sources increase. that pollinators Almonds, blackberries, cucumbers, and artichokes are some of the crops raised in the California Coastal Chaparral Forest that rely on honey bees and native bees for pollination. Domestic honey bees pollinate are a critical approximately $10 billion worth of crops in the U.S. each year. Unfortunately, the numbers of both native pollinators and domesticated link in our food bee populations are declining. They are threatened by habitat loss, disease, and the excessive and inappropriate use of pesticides. The loss of commercial bees to Colony Collapse Disorder (CCD) has highlighted how severe the issues of proper hive management are to reduce stresses caused systems.” by disease, pesticide use, insufficient nutrition, and transportation practices. -- Paul Growald, Currently, the pollination services that the commercial beekeeping industry provides are receiving much needed research and conservation resources. Co-Founder, The efforts to understand the threats to commercial bees should help us Pollinator partnership understand other pollinators and their roles in the environment as well. It is imperative that we take immediate steps to help pollinator populations thrive. The beauty of the situation is that by supporting pollinators’ need for habitat, we support our own needs for food and support diversity in the natural world. Thank you for taking time to consult this guide. By adding plants to your landscape that provide food and shelter for pollinators throughout their active seasons and by adopting pollinator friendly landscape practices, you can make a difference to both the pollinators and the people that rely on them. Laurie Davies Adams Executive Director Pollinator Partnership 4 Selecting Plants for Pollinators Getting Started thIs regIonal guIde Is just one to land management practices the hills and lower mountains. in a series of plant selection tools throughout large areas. This guide Chaparral, semi-arid evergreen designed to provide information addresses pollinator-friendly land scrub, dominates dry steep hills on how individuals can influence management practices in what is and mountain slopes inhospitable pollinator populations through known as the California Coastal to oaks. It varies in composition choices they make when they farm Chaparral Forest and Shrub with exposure and elevation and a plot of ground, manage large Province. consists of bushy shrubs such as tracts of public land, or plant a This 10,300 square mile province chamise and manzanita. Desert-like garden. Each of us can have a adjacent to the Pacific Ocean coastal scrub, including coyote bush positive impact by providing the included coastal plains, low and California sagebrush, inhabits essential habitat requirements for mountains, and interior valleys exposed coastal areas. pollinators including food, water, with elevations ranging from sea Long before there were homes shelter, and enough space to allow level to 2,400 feet. The climate is and farms in this area, the original, pollinators to raise their young. characterized by dry, hot summers natural vegetation provided Pollinators travel through the and mild, rainy winters. Average continuous cover and adjacent landscape without regard to annual temperature ranges from feeding opportunities for wildlife, property ownership or state 50° to 65°F. Annual rainfall ranges including pollinators. In choosing boundaries. We’ve chosen to use from 10 to 50 inches with a marked plants, aim to create habitat for R.G. Bailey’s classification system summer drought. pollinators that allow adequate food to identify the geographic focus The vegetation in this province shelter, and water sources. Most of this guide and to underscore occurs in distinct communities pollinators have very small home the connections between climate along with endemic cypress and ranges. You can make a difference and vegetation types that affect pines. Sagebrush and grassland by understanding the vegetation the diversity of pollinators in the communities can be found on the patterns of the farm, forest, or environment. coastal plains and in larger valleys. neighbor’s yard adjacent to you and by making planting choices Bailey’s Ecoregions of the United Broadleaf species grow in Riparian that support the pollinators’ need States, developed by the United forests along streams. Sclerophyll for food and shelter as they move States Forest Service, is a system (dry-loving) forest, comprised of through the landscape. created as a management tool woody plants with leathery leaves, and is used to predict responses thrives among oak woodland on California Coastal Chaparral Forest and Shrub Province 5 Understanding the California Coastal Chaparral Forest n This region is designated number 261 in the Baileys’ Ecosystem Provinces. To see a map of the provinces go to: www.fs.fed.us/colorimagemap/ecoreg1_provinces.html n Not sure about which bioregion you live or work in? Go to www.pollinator.org and click on Ecoregion Locator for help. n 10,300 square miles along the coast of SouthernCalifornia. n Coastal plains, low mountains, and interior valleys from San Francisco to San Diego. n Elevations ranging from sea level to 2,400 feet. n Average annual temperature range from 50° to 65°F. n Average year-round precipitation between 10-50 inches. n USDA Hardiness Zones 9-10. Characteristics n Dominated by plant communities adapted to summer drought: sclerophyll forest, chaparral, coastal scrub and sagebrush. n Common tree species include cypress, pine, oak, chamise, red Photo Marguerite Meyr Marguerite Photo shanks, manzanita, bush lupine, and coyote bush. n Agriculture and urban development has led to habitat fragmentation and degradation and caused the displacement of native plants and animals. 6 Selecting Plants for Pollinators Along the Southern “ Adding native plantings in riparian areas California Coast to improve pollinator habitat makes sense in advancing our family farm’s conservation and economic objectives, enhancing beneficial wildlife and improving pollination in our orchard and garden.” --Lee McDaniel, Farmer and President, National Association of Conservation Districts California Coastal Chaparral Forest and Shrub Province 7 Meet the Pollinators Who are the Solitary bees include carpenter bees (Xylocopa spp.), which nest in wood; pollinators? digger, or polyester bees (Colletes spp.), which nest underground; Bees leafcutter bees (Megachile spp.), Bees are well documented which prefer dead trees or branches pollinators in the natural and for their nest sites; and mason bees agricultural systems of the (Osmia spp.), which utilize cavities California Coastal Chaparral Forest. that they find in stems and dead A wide range of crops including wood. Cactus bees (Diadasia spp.) almonds, blackberries, cucumbers are also solitary ground nesters. and artichokes, are just a few plants that benefit from bee pollinators. Butter fl ies Most of us are familiar with the Gardeners have been attracting Photo Kim Davis & Mike Stangeland Mike & Davis Kim Photo colonies of honey bees that have Small Dotted Blue butterfly. butterflies to their gardens for some been the workhorses of agricultural time. These insects tend to be eye- pollination for years in the United catching, as are the flowers that States. They were imported from attract them. Position flowering Europe almost 400 years ago. plants where they