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Backyard Gardening For Pollinators
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What Do Pollinators Need?
Food Shelter Protection From Pesticides
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Food
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Providing Pollen and Nectar
Nectar – energy and amino acids Pollen – protein
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Providing Pollen and Nectar
Goals: Use a wide variety of plants Provide diversity in flower size, shape, structure Provide continuous bloom early spring through late fall Provide butterfly host plants
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Variety in Flower Structure
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Flower Variety in Size, Shape, Color
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Flower Types Attractive to Pollinators
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Our Concept of ‘Weeds’
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Noxious Weeds Shatter cane (Sorghum bicolor).
Russian thistle (Salsola Kali var. tenuifolia). Johnsongrass (Sorghum halepense L. (Pers.)). Wild parsnip ( Pastinaca sativa). Wild carrot (Queen Annes lace) (Daucus carota L.). Oxeye daisy (Chrysanthermum leucanthemum var. pinnatifidum). Wild mustard (Brassica kaber var. pinnatifida). Grapevines: when growing in groups of one hundred or more and not pruned, sprayed, cultivated, or otherwise maintained for two consecutive years. Canada thistle (Cirsium arvense L. (Scop.)). Poison hemlock (Conium maculatum). Cressleaf groundsel (Senecio glabellus). Musk thistle (Carduus nutans). Purple loosestrife (Lythrum salicaria). Mile-A-Minute Weed (Polygonum perfoliatum). Giant Hogweed (Heracleum mantegazzianum). Apple of Peru (Nicandra physalodes). Marestail (Conyza canadensis) Kochia (Bassia scoparia). Palmer amaranth (Amaranthus palmeri). Kudzu (Pueraria montana var. lobata) Japanese knotweed (Polygonum cuspidatum)
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Invasives
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Variety in Bloom Time
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What About Wintertime? Leave plants with fruits and seeds standing
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Butterfly Host Plants Black Swallowtail Spice Bush Swallowtail Eastern Tiger Swallowtail Parsley, carrot, celery, dill Spicebush, sassafras Black cherry, ash, tulip tree, spicebush American Painted Lady Viceroy Monarch Pearly everlasting Willow, poplars, black cherry Milkweed
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Butterfly Host Plants Flowers: Aster (Aster spp.) Black-Eyed Susan (Rudbeckia hirta) Butterfly Milkweed (Asclepias tuberosa) Common Milkweed (Asclepias syriaca) Coneflowers (Echinacea purpurea) False Nettle (Boehmeria cylindrica) Hollyhock (Alcea rosea) Indian Paintbrush (Castilleja spp.) Mallow (Malva spp.) Nasturtium (Tropaeolum majus) Pussy-toe (Antennaria plantaginifolia) Rue (Ruta graveolens) Ruellia (Ruellia spp.) Shasta Daisy (Leucanthemum spp.) Silver Brocade (Artemisia stellariana) Snapdragon (Antirrhinum majus) Spider flower (Cleome hasslerana) Sunflower (Helianthus spp.) Swamp Milkweed (Asclepias incarnata) Swamp Verbena (Verbena hastata) Tall Verbena (Verbena bonariensis) Violet (Viola spp. ) Water Dock (Rumex verticillatus) Wild Senna (Senna hebecarpa) Woodland Stonecrop (Sedum ternatum) Vines: Passion Flowers (Passiflora spp.) Pipevine (Aristolochia macrophylla Herbs: Dill (Antheum graveolens) Fennel (Foeniculum vulgare) Parsley (Petroselinum crispum) Grasses: Little Bluestem Grass (Schizachyrium scoparium) Orchard Grass (Dactylis glomerata ) Panic Grass (Panicum spp.) Shrubs: Coontie (Zamia pumila) False Indigo (Baptisia australis) Spicebush (Lindera benzoin ) Trees: Aspen Tree (Populus spp.) Common HopTree (Ptelea trifoliata) Elm Tree (Ulmus spp. ) Flowering Dogwood (Cornus) Pawpaw (Asimina triloba) Prickly Ash (Zanthoxylum americanum) Sassafras (Sassafras albidum) Sweet Bay (Magnolia virginiana) Willow (Salix)
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Natives Adapted to our climate Tolerate poor conditions
Low maintenance Beneficial for native pollinators
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Other Considerations Spread elements throughout yard Plant in groups
Avoid modern hybrid flowers, especially those with "doubled" flowers. Night-blooming flowers will support moths and bats.
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Getting Started
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Where to Get Plants Native plant nurseries Native seed companies
Local native plant sales Cox Arboretum Aullwood Audubon Center and Farm Marianist Environmental Education Center
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Shelter
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Shelter Protection from severe weather and predators Sites for nesting
Solitary bees make small tunnels in the ground or use beetle tunnels in trees Social bumble bees use small cavities, like rodent burrows
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Nest Sites
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Water
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Water Features Pools, ponds, small containers
Should be shallow or have sloping sides
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Protection From Pesticides
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Protection From Pesticides
Insecticides are dangerous to bee and butterfly species Herbicides kill potential food sources
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Integrated Pest Management
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Attracting Beneficial Insects
Beneficial insects, many of which are also pollinators, help destroy harmful insects Attract them by: Planting flowering plants surrounding your garden (nectar and pollen will attract beneficials) Plant ‘insectary plants’ which attract and sustain beneficial insects
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Insectary Plants Sweet alyssum (white variety) Buckwheat Fennel
It belongs to the mustard family. Flowering period is long (several months). Natural enemies attracted include minute pirate bug, lacewings and ladybugs (predators) as well as small parasitic wasps that can attack aphids and other small insects. Buckwheat It is very attractive to honeybees, hover flies, soldier beetles, parasitic wasps and parasitic flies. Plus, predatory insects including assassin bugs, shield bugs, and predatory stink bugs. Fennel This plant attracts many ladybeetles, wasps, and hover flies. Fennel is also a host plant for the caterpillars of the anise swallowtail butterfly. Sunflower This plant can attract predatory insects such as big-eyed bugs, wasps, lady beetles and predatory bugs. Mustard It is very attractive to lacewings, ladybeetles, and parasitic wasps that attack aphids and other small-sized insects.
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When Using Insecticides
Choose selective insecticides when possible Read labels carefully Apply according to label instructions Apply at night when pollinators are less active
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Other Considerations
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Other Considerations ‘Salt lick’ – Sea salt on the ground or mixed with water A place to rest, such as rocks Windbreaks
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Questions?
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