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Horticulture Industry’s Response to Invasive Plant Problem in Georgia Georgia Green Industry Association Invasive Plant Task Force.

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Presentation on theme: "Horticulture Industry’s Response to Invasive Plant Problem in Georgia Georgia Green Industry Association Invasive Plant Task Force."— Presentation transcript:

1 Horticulture Industry’s Response to Invasive Plant Problem in Georgia Georgia Green Industry Association Invasive Plant Task Force

2 Survey sent to Natural Areas Managed by: GA- DOT GA- Parks and Recreation GA- DNR US Military Bases and Army COE The Nature Conservancy Local Organizations

3 Possible Additional Invasives: Federal Noxious Weed List FL Category I List (North) TN- EPPC List Invasive Plants of Southern Forests (Miller 2003)

4 UnfamiliarAbsentPresentModerateSevere Kudzu Pueraria montana 11%4037%4239%1514%109% Chinese Privet Ligustrum sinense 77%2221%4038%2524%1211% Japanese Honeysuckle Lonicera japonica 22%1514%6663%1514%77% Hydrilla Hydrilla verticillata 1616%6666%1111%33%44% Chinese Tallowtree Sapium sebiferum 3331%5350%1211%55%32% Nepalese Browntop Microstegium vimineum 6361%2423%55%76%45% Golden Bamboo Phyllostachys aurea 3939%4343%1515%22%11% Autumn Olive Elaeagnus umbellata 1717%3130%4948%44%11% Chinese Wisteria Wisteria sinensis 1313%3838%3636%1111%32% Mimosa Albizia julibrissin 11%4540%5751%87%11%

5 Moderate to Severe Japanese Honeysuckle Chinese Privet Kudzu

6 Localized Chinese Wisteria Mimosa Autumn Olive

7 Regional Chinese Tallowtree Nepalese Browntop Golden Bamboo

8 Aquatic Hydrilla

9 CATEGORY I- Serious displacing natives over a wide area Chinese Privet Mimosa Multiflora Rose Japanese Climbing Fern Chinese Tallowtree Autumn Olive Japanese Honeysuckle

10 CATEGORY II- Moderate localized populations altering local plant communities Bermudagrass Wintercreeper Euonymus Tall Fescue English Ivy Oxeye Daisy Giant Reed Silverthorne Japanese Privet Bigleaf Periwinkle Tall Vervain Glossy Privet Chinese Wisteria Chinese Silvergrass Common Periwinkle Cherokee Rose Amur Honeysuckle Japanese Spirea Princess Tree Nandina Golden Bamboo

11 CATEGORY III- Minimal have potential to become invasive Morrow’s Honeysuckle Japanese Bloodgrass Lantana Russian Olive Fragrant Winter Honeysuckle Tartarian Honeysuckle Queen Anne’s Lace Japanese Pagoda Tree Winged Euonymus Common Privet Purple Loosestrife Liriope Leather Leaf Mahonia Five-leaf Akebia Porcelain Vine Sweet Autumn Clematis Chinese Holly (fruiting forms) Burning Bush Euonymus Spreading Bamboos Sawtooth Oak Lacebark Elm Callery Pear (including cultivars)

12 OTHER 2004 TOPICS Reviewed programs/legislation in other states Discussed Georgia alternatives with Department of Agriculture Collected cursory Economic Impact Data for selected Category I Plants Discussed Best Management Practices with Plant Introduction Specialists

13 WHAT WE ARE PLANNING FOR 2005 Continue investigating Georgia alternatives with Department of Agriculture Collect conclusive Economic Impact Data for all Category I Plants Continue discussing Best Management Practices with Plant Introduction Specialists Write Invasive Plant Chapters for all Certification Manuals


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