Skip to content
  • ๐Ÿ’ƒ๐Ÿป Get your hands on the best deals๐Ÿ›๏ธ 20% off storewide ๐Ÿ’ฐ
  • ๐Ÿ’ƒ๐Ÿป Get your hands on the best deals๐Ÿ›๏ธ 20% off storewide ๐Ÿ’ฐ
Garden Seed ShopGarden Seed Shop
  • Menu
  • Vegetables
    • Microgreens
    • Peppers
    • Lettuce
    • Tomatoes
    • Onions
    • Squash
    • Greens
    • Corn
    • Pumpkins
    • Beans
    • Carrots
    • Radishes
    • Cucumbers
    • Cabbage
    • Broccoli
  • Flowers
    • Snapdragon
    • Tulips
    • Sunflowers
    • Zinnias
    • Stock
    • Celosia
    • Cosmos
    • Aster
    • Sweet Peas
    • Flower Collections and Mixes
    • Dianthus (Sweet William)
    • Lisianthus
    • Strawflower
    • Scabiosa (Pincushion Flower)
    • Gomphrena (Globe Amaranth)
  • Herbs
    • Culinary Herbs
    • Basil
    • Chamomile
  • Tools & Supplies
    • Seed Starting Supplies
    • Seeders
    • Weed Control
    • Bed Preparation Tools
    • Mulches and Weed Barrier
    • Clothing
    • Greenhouse and Tunnel Supplies
    • Pest and Disease Controls
    • Trellising & Crop Supports
    • Harvesting Tools
    • Row Covers and Accessories
    • Cut-Flower Supplies
    • Watering and Irrigation
    • Raised Beds & Planters
    • Transplanters
  • Featured Products
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

 

T-448

Home / Vegetables / Onions
  • Dwarf Grey Sugar -Garden Seed Shop 02206 01 dwarfgreysugarvert2
  • Sierra Blanca -Garden Seed Shop 00103 01 sierra blanca
New
T-448

$12.00 Original price was: $12.00.$8.40Current price is: $8.40.

Clear
SKU: AM9OB 1700022258 Categories: Onions, Vegetables Tags: Johnny's Selected Seeds, Onions
  • Protect Your Information, Shop with Safe Payments
  • Get Quality, Get More
  • Fast, friendly, always here to help.
  • Quality products, fair prices.
Browse
  • Flowers
    • Aster
    • Celosia
    • Cosmos
    • Dianthus (Sweet William)
    • Flower Collections and Mixes
    • Gomphrena (Globe Amaranth)
    • Lisianthus
    • Scabiosa (Pincushion Flower)
    • Snapdragon
    • Stock
    • Strawflower
    • Sunflowers
    • Sweet Peas
    • Tulips
    • Viola (Pansy)
    • Zinnias
  • Herbs
    • Basil
    • Chamomile
    • Culinary Herbs
  • Tools & Supplies
    • Bed Preparation Tools
    • Clothing
    • Compost Bins & Accessories
    • Cut-Flower Supplies
    • Fertilizers & Amendments
    • Greenhouse and Tunnel Supplies
    • Hand Tools
    • Harvesting Tools
    • Microgreens Supplies
    • Mulches and Weed Barrier
    • Pest and Disease Controls
    • Post Harvest
    • Raised Beds & Planters
    • Row Covers and Accessories
    • Seed Starting Supplies
    • Seeders
    • Test & Measuring Equipment
    • Transplanters
    • Trellising & Crop Supports
    • Watering and Irrigation
    • Weed Control
  • Vegetables
    • Beans
    • Beets
    • Broccoli
    • Cabbage
    • Carrots
    • Cauliflower
    • Chicory
    • Corn
    • Cucumbers
    • Eggplant
    • Greens
    • Kale
    • Lettuce
    • Melons
    • Microgreens
    • Onions
    • Peas
    • Peppers
    • Potatoes
    • Pumpkins
    • Radishes
    • Spinach
    • Squash
    • Tomatoes
    • Watermelons
  • Description
  • Additional information
  • Reviews (0)

Earliest long-day overwintering onion for the North.

Our trials have shown T-448 to be larger and about a week earlier than Bridger when overwintered. Bulbs are also more rounded in shape. Not as early or as large as Bridger when spring sown, however. Exceptional bolt tolerance when overwintered.

Specs:

  • Packet: 250 seeds
  • Avg. 114,900 seeds/lb

Size

Packet, 1,000 Seeds, 5,000 Seeds, 25,000 Seeds, 100,000 Seeds

HARVEST

When necks become soft and 50% of tops are falling over, pull and cure in well-ventilated space out of direct sunlight (to prevent greening) or sun-cure in field for 2โ€“7 dry days before moving to dry location. Cure until tops are completely dried; about 2 weeks.

SEED SPECS

SEEDS/LB.: 96,900โ€“127,700 (avg. 112,000).

SIZED SEEDS

Standard on all varieties.

TRANSPLANTS

Avg. 1 oz./4,900 plants, 1 lb./78,750.

AVG. DIRECT SEEDING RATE

1 oz./25', 1M/50', 5M/250', 25M/1,250', 580M/acre at 20 seeds/ft., in rows 18" apart.

DAYS TO MATURITY

From direct seeding; subtract 10โ€“15 days for days to maturity from transplant.

STORAGE

When dry, clip off tops and roots and store in onion bags or shallow boxes at near freezing and 65โ€“70% humidity.

DISEASES

Adequate air circulation and crop rotation aids in reducing the risk of foliar disease.

SCIENTIFIC NAME

Allium cepa

WATER

Onions are shallow-rooted and grow best with at least 1" per week of rain or irrigation, especially during the bulbing phase.

CULTIVATION

Keep onions well weeded with shallow cultivation.

TRANSPLANTING

In long- and intermediate-day areas, sow indoors 6โ€“8 weeks before last frost date. Sow 128-cell trays, 1 seed/cell, and cover with 1/4" soil. Transplant 4" apart in rows 12โ€“18" apart. Unruly tops may be clipped to 5" at time of transplant.

DIRECT SEEDING

In April or early May, or as soon as the soil can be prepared in early spring, sow in a 2" wide band, about 2 seeds/in., 1/4โ€“ 1/2" deep, rows 12โ€“18" apart. Thin to 1 1/2โ€“2" apart for highest yields in fertile soil. Thin to 3-4" apart for larger onions.

DAY LENGTH

Onion bulbing is triggered by day length, and maximum day length during the growing season increases from south to north. Short-day onions are grown at lower latitudes in the South, while intermediate and long-day onions are grown at higher latitudes. Refer to "Adaptation" in each variety description for details.

CULTURE

Onions require full sun and fertile, well-drained soil with a pH of 6.0โ€“7.0. Sandy loam soils are ideal; in heavier soils, use raised beds or raised rows to promote soil drainage.

PACKET

250 seeds, sows 12' or makes 140 plants.

Reviews

There are no reviews yet.

Be the first to review “T-448” Cancel reply

Related products

New
Typhoon
Quick View

Cabbage

Typhoon

$12.00 Original price was: $12.00.$8.40Current price is: $8.40.
New
Bridger
Quick View

Onions

Bridger

$12.00 Original price was: $12.00.$8.40Current price is: $8.40.
New
Strawberry Paw
Quick View

Potatoes

Strawberry Paw

$24.30 Original price was: $24.30.$17.01Current price is: $17.01.
New
Promise
Quick View

Cabbage

Promise

$13.00 Original price was: $13.00.$9.10Current price is: $9.10.
New
Asian Delite
Quick View

Eggplant

Asian Delite

$13.00 Original price was: $13.00.$9.10Current price is: $9.10.
New
Sulu
Quick View

Vegetables

Sulu

$12.00 Original price was: $12.00.$8.40Current price is: $8.40.
New
Tavor
Quick View

Vegetables

Tavor

$14.00 Original price was: $14.00.$9.80Current price is: $9.80.
New
Carminat
Quick View

Beans

Carminat

$12.00 Original price was: $12.00.$8.40Current price is: $8.40.
OUR SHOP
  • My account
  • Checkout
  • Cart
  • Payment Method
CONTACT
  • About Us
  • Contact Us
  • FAQ
  • Returns & Exchanges
CUSTOMER SERVICES
  • Privacy Policy
  • Shipping & Returns
  • Delivery
  • Term and Conditions
STAY IN TOUCH

Sign up for exclusive offers, original stories, events and more.

    Copyright 2025 ยฉ www.gardengearcare.com
    • Vegetables
      • Microgreens
      • Peppers
      • Lettuce
      • Tomatoes
      • Onions
      • Squash
      • Greens
      • Corn
      • Pumpkins
      • Beans
      • Carrots
      • Radishes
      • Cucumbers
      • Cabbage
      • Broccoli
    • Flowers
      • Snapdragon
      • Tulips
      • Sunflowers
      • Zinnias
      • Stock
      • Celosia
      • Cosmos
      • Aster
      • Sweet Peas
      • Flower Collections and Mixes
      • Dianthus (Sweet William)
      • Lisianthus
      • Strawflower
      • Scabiosa (Pincushion Flower)
      • Gomphrena (Globe Amaranth)
    • Herbs
      • Culinary Herbs
      • Basil
      • Chamomile
    • Tools & Supplies
      • Seed Starting Supplies
      • Seeders
      • Weed Control
      • Bed Preparation Tools
      • Mulches and Weed Barrier
      • Clothing
      • Greenhouse and Tunnel Supplies
      • Pest and Disease Controls
      • Trellising & Crop Supports
      • Harvesting Tools
      • Row Covers and Accessories
      • Cut-Flower Supplies
      • Watering and Irrigation
      • Raised Beds & Planters
      • Transplanters
    • Featured Products
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.