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Bluestone Perennials
Offers a selection of perennials, plants, herbs, ornamental shrubs and bulbs. Option to search by growing zone.
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Thompson and Morgan Ltd
Has thousands of varieties of seeds for sale worldwide. Also Young Plants for sale to the UK.
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Park Seed Online
Offers a selection of perennial, vegetable and herb seeds.
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Michigan Bulb Co.
Offers trees, shrubs, vines, perennials, bulbs, herbs, fruits, and vegetables. Includes plant selection tools.
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Jackson & Perkins Roses
Breeder and seller of roses, particularly hybrid teas.
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Henry Field’s Seed and Nursery Co.
Sells seeds, perennials, live vegetable plants and trees.
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Dutch Gardens
Sells spring and summer flowering bulbs and perennials shipped direct from The Netherlands.
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Gardens Alive
Environmentally friendly pest controls.