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Selecting Plants for Pollinators Selecting Plants for Pollinators Selecting Plants for Pollinators A Regional Guide for Farmers, Land Managers, and Gardeners In the Lower Mainland Including The Greater Vancouver Area, Abbotsford, Chilliwack, Powell River, Harrison Lake, and parts of and Similkameen Valley NAPPC Table of CONTENTS Why Support Pollinators? 4 Getting Started 5 Lower Mainland 6 Meet the Pollinators 8 Plant Traits 10 Developing Plantings 12 Farms 13 Public Lands 14 Home Landscapes 15 Plants That Attract Pollinators 16 Habitat Hints 21 Habitat and Nesting Requirements 22 This is one of several guides for Checklist and Resources 23 different regions of North America. We welcome your feedback to assist us in making the future guides Feedback 24 useful. Please contact us at [email protected] Cover bee photo by Julie Baker 2 Selecting Plants for Pollinators Selecting Plants for Pollinators A Regional Guide for Farmers, Land Managers, and Gardeners In the Ecological Region of the Lower Mainland Including The Greater Vancouver Area, Abbotsford, Chilliwack, Powell River, Harrison Lake, and parts of Similkameen Valley a nappc and Pollinator Partnership™ Publication This guide was funded by The Stanley Smith Horticultural Trust with oversight by the Pollinator Partnership Canada (www.pollinator.org), in support of the North American Pollinator Protection Campaign (NAPPC–www.nappc.org). Lower Mainland 3 Why support pollinators? IN THEIR 1996 BOOK, THE FORGOTTEN POLLINATORS, Buchmann and Nabhan estimated that animal pollinators are needed for the reproduction “Flowering plants of 90% of fl owering 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 across wild, intricate web that supports the biological diversity in natural ecosystems that helps sustain our quality of life. farmed and even Abundant and healthy populations of pollinators can improve fruit set and quality, and increase fruit size. In farming situations this increases production per hectare. In the wild, biodiversity increases and wildlife food urban landscapes sources increase. Pumpkins, broccoli, squash, and cabbage are some of the crops raised actually feed the in the Lower Mainland that rely on honey bees and native bees for pollination. Domestic honey bees pollinate more than $1 billion worth of crops in Canada each year. terrestrial world, Unfortunately, the numbers of both native pollinators and domesticated bee populations are declining. They are threatened by habitat loss, and pollinators disease, and the excessive and inappropriate use of pesticides. The loss of commercial bees during the winter has highlighted how severe the issues of proper hive management are to reduce stresses caused by disease, pesticide are the great use, insuffi cient nutrition, and transportation practices. Currently, the pollination services that the commercial beekeeping industry provides are receiving much needed research and conservation resources. The efforts to connectors who understand the threats to commercial bees should help us understand other pollinators and their roles in the environment as well. enable this giant 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 food system to natural world. Thank you for taking time to consult this guide. By adding plants to your work for all who 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. eat... Including us.” – Roger Lang, Chairman, Val Dolcini Pollinator Partnership President & CEO Pollinator Partnership 4 Selecting Plants for Pollinators Getting Started THIS REGIONAL GUIDE IS just one The Canadian ecoregions are winter months and reanges from in a series of plant selection tools based on the National Ecological 850mm to 2000mm annually. designed to provide information Framework Report. The National The Lower Mainland is on how individuals can infl uence Ecological Framework for Canada characterized primarily by forests pollinator populations through is a system created as a management including Western red cedar and choices they make when they farm tool and is used to predict responses Western Hemlock. a plot of ground, manage large to land management practices Long before there were homes tracts of public land, or plant a throughout large areas. This guide and farms in this area, natural garden. Each of us can have a addresses pollinator-friendly land vegetation provided essential positive impact by providing the management practices in what is feeding opportunities for wildlife, essential habitat requirements for known as the Lower Mainland. including pollinators. In choosing pollinators including food, water, The Lower Mainland ecoregion is plants, aim to create habitat for shelter, and enough space to raise part of the larger Pacifi c Maritime pollinators that allow adequate food, their young. 2 Ecozone,which spans 195,000 km shelter, and water sources. Most Pollinators travel through the along the Canadian Pacifi c Coast. pollinators have very small home landscape without regard to The Lower Mainland ecoregion ranges. You can make a difference property ownership or provincial is contained entirely in British by understanding the vegetation boundaries. We’ve chosen to use Columbia and is approximately patterns on the farm, forest, or 2 the ecoregional classifi cation system 5,000 km from the foothills of the neighbour’s yard adjacent to yours to identify the geographic focus Cascade Mountains to the Fraser and by making planting choices of this guide and to underscore River. that support the pollinators’ need the connections between climate The summer mean temperature for food and shelter as they move and vegetation types that affect is 15°C and the winter mean through the landscape. the diversity of pollinators in the temperature is 3.5°C. This environment. ecoregion’s precipitation peaks in Lower Mainland 5 Understanding the Lower Mainland n This region is designated number 196 Lower Mainland. To see a map of the other ecoregions go to: http://www.ecozones.ca/english/region/196.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 5,067 km2 within British Columbia. n Elevations ranging from sea level to 310 metres. n Summer mean temperature of 15°C and winter mean temperature of 3.5°C n Average year-round precipitation between 850 to 2,000mm. n Diverse soil types including glacial till, silty alluvium and marine sediments. Characteristics n Dominated by dense coniferous forests including Douglas fi r, Western red hemlock and dogwood. n Deciduous trees including oak and large leaf maple. n Understories are characterized by moss, Oregon grape and salal. n Wetter areas are comprised of Douglas fi r, Western red cedar and Western hemlock. n Wildlife include marine birds, black tail deer, racoon, sea otters and coyote. 6 Selecting Plants for Pollinators The Lower Mainland includes: The Greater Vancouver Area Abbotsford Chilliwack Powell River Harrison Lake and parts of Similkameen Valley Lower Mainland 7 Meet the Pollinators Who are the underground. Various species are solitary while others form loose pollinators? colonies. Solitary bees include carpenter Bees bees (Xylocopa spp.), which nest Bees are well documented in wood; digger, (Apidae), which pollinators in the natural and nest underground; leafcutting bees agricultural systems of the Lower (Megachile spp.), which prefer dead Mainland. A wide range of crops trees or branches for their nest including pumpkins, squash, sites; and mason bees (Osmia spp.), broccoli, and cabbage are just a which utilize cavities that they fi nd few plants that benefi t from bee in stems and dead wood. Sunfl ower pollinators. bees (Diadasia spp.) are also solitary Most of us are familiar with the ground nesters. colonies of honey bees that have been the workhorses of agricultural pollination for years in Canada. Butterfl ies They were imported from Europe Gardeners have been attracting almost 400 years ago. butterfl ies to their gardens for some time. These insects tend to be eye- There are over 800 species of native catching, as are the fl owers that ground and twig nesting bees in attract them. Position fl owering Canada. Most bee species live a Flower fl ies, also known as hoverfl ies, plants where they have full sun and mimic the appearance of bees or wasps solitary life while a minority of are protected from the wind. Also, and feed on nectar and pollen like bees, species are social and form colonies. you will need to provide open areas but are classifi ed as fl ies. Native bees currently pollinate (e.g., bare earth, large stones) where many crops and can be encouraged butterfl ies may bask, and moist soil to do more to support agricultural from which they may get needed endeavours if their needs for nesting minerals. By providing a safe place habitat are met and if suitable to eat and nest, gardeners can also sources of nectar, pollen, and water support the pollination role that Western Tiger Swallowtail are provided. Bees have tongues of butterfl ies play in the landscape. It varying lengths that help determine might mean accepting slight damage which fl owers they can obtain nectar to the plants, known as host plants, and pollen from. that provide food for the larval stage The bumble bee (Bombus spp.) forms of the butterfl y. small colonies, usually underground. A diverse group of butterfl ies They are generalists, feeding on a are present in garden areas and wide range of plant material from woodland edges that provide bright April to October and are important fl owers, water sources, and specifi c pollinators of tomatoes.
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