Yellow Summer Onion Seeds

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Vegetables & Herbs

Vegetables Vegetables

Asian Greens Asparagus Beans Beets Broccoli Brussels Sprouts Cabbages Carrots Cauliflowers Celery Corn Cucumbers Eggplants Garlic Ginger Gourds Grains Greens Kale and Collards Kohlrabi Leeks Lettuce Melons Mushrooms Okra Onions Parsnips Peas Peppers Pumpkins Radishes Rutabagas Shallots Spinach Summer Squash Sunchokes Sweet Potatoes Tomatillos and Husk Cherries Tomatoes Turmeric Turnips Watermelons Winter Squash Other Vegetables

Potatoes Potatoes

Collections Blue Potatoes Fingerling Potatoes Red Potatoes Russet Potatoes Specialty Potatoes White Potatoes Yellow Potatoes

Herbs Herbs

Arnica Astragalus Basil Boneset Chervil Chives Cilantro Collections Comfrey Dill Echinacea Fennel Lavender Lemon Balm Nettles Oregano Parsley Savory Skullcap Thyme Vervain Other Herbs

Featured

Preorder 2026 Fedco Seeds & Supplies Print Catalog Organic Seeds Sourced from Small Farmers Sourced from Family-owned Companies Black Benefit Sharing Indigenous Royalties Open Source Seed Fedco Introductions Seed Racks Seed Collections

Fruits, Trees & Shrubs

Fruits Fruits

Apples Apricots Blueberries Cane Fruit Cherries Elderberries Grapes Kiwiberries Lingonberries Mulberries Peaches Pears Persimmons Plums Quince Saskatoons Stone Fruits Strawberries Other Small Fruits

Trees and Shrubs Trees and Shrubs

Chokeberries Collections Conifers Dogwoods Lilacs Nuts Roses Shade Trees Viburnums Willows Other Trees and Shrubs

Featured

Order 2026 Fedco Trees Print Catalog Scionwood Rootstock Collections Organic Trees & Plants Indigenous Royalties Edible Landscape Vines

Flowers

Flowers Flowers

Ageratums Alliums Alyssum Amaranths Amaryllis Asters Astilbe Bachelor’s Buttons Beardtongues Bee Balms Begonias Bleeding Heart Butterfly Weed Calendulas California Poppies Catmint Celosias China Asters Collections Columbines Coreopsis Cosmos Crocuses Dahlias Daisies Daylilies Delphiniums Dianthus Flax Fritillaria Gaillardia Geraniums Gladiolus Globe Amaranth Globeflower Glory-of-the-Snow Grains Grape Hyacinths Helenium Hollyhocks Hostas Hyacinths Irises Joe Pye Weed Larkspurs Lemon Balm Liatris Lilies Lobelia Lupines Marigolds Milkweed Morning Glories Narcissus Nasturtiums Nicotiana Pansies Peonies Petunias Phacelia Phlox Pincushion Flower Poppies Ranunculus Red Hot Poker Rudbeckias Salvias Snapdragon Squill Stock Strawflowers Sunflowers Sweet Peas Thyme Tithonia Tulips Verbenas Vervain Yarrow Zinnias Other Flowers

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Preorder 2026 Fedco Seeds & Supplies Print Catalog Ferns Dye Plants Collections Flower Seeds Fall-planted Flower Bulbs Perennial Plants Spring-planted Tender Bulbs Groundcovers Native Plants

Supplies

Supplies Supplies

Amendments and Fertilizers Beneficial Microbes and Inoculants Books Clothing Crop Covers Crop Supports Drip Irrigation Farm Seed Fedco Gear Harvest Supplies Hose Fittings Labeling Supplies Livestock Supplies Mulches and Weed Barriers Mushroom Supplies Nozzles and Wands Orchard Supplies Pest and Disease Management Planters and Containers Post-Harvest Supplies Seed Starting Supplies Services Tools Other Supplies

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Preorder 2026 Fedco Seeds & Supplies Print Catalog Cannabis Growing Supplies Clearance Sale

About

Resources

Ordering

Ordering from Fedco Quick Order Form Group Ordering About Our Trees & Plants Organic Certification Seeds Fundraisers Download a catalog Directions to our Warehouse

Orders with subtotals $1,200 and above receive bulk pricing.

If you have placed orders totaling at least $1,200 within the past 12 months, additional orders qualify for bulk pricing.

Shipping

Truck Shipping Depot Shipping Shipping Seeds to Canada Shipping Restrictions Shipping Schedule for Trees & Plants

Bulbs begin shipping in late September.

Trees and plants begin shipping in March.

Potatoes and onion sets begin shipping in late March.

Seeds ship year-round.

Tools and growing supplies ship year-round.

Information for growers

Live Plant Care: Immediately Upon Receipt Look up Germination Rates by Lot Number Charts & Tools Cheat Sheet for Beginning Gardeners Gardening Orchards Growing Guides Pests & Diseases

Fedco’s Values

Sourcing Transparency and Catalog Codes Benefit Sharing and Royalties Seed Without a Price Genetic Engineering and the Safe Seed Pledge More About Our Values

Essays & More

Catalog Greetings Friends & Partnerships Recipes Resilience Essays Conferences & Events

Orders with subtotals $1,200 and above receive bulk pricing.

If you have placed orders totaling at least $1,200 within the past 12 months, additional orders qualify for bulk pricing.

Yellow Summer Onions