Skip to content
  • 🔥 Hot deals and free shipping! 🔥
  • 🔥 Hot deals and free shipping! 🔥
Garden Plant ShopGarden Plant Shop
  • Menu
  • Vegetables
    • Peppers
    • Greens
    • Pumpkins
    • Squash
    • Tomatoes
    • Lettuce
    • Microgreens
    • Onions
    • Corn
    • Beans
    • Carrots
    • Radishes
    • Cucumbers
    • Cabbage
    • Broccoli
  • Flowers
    • Sunflowers
    • Tulips
    • Celosia
    • Cosmos
    • Aster
    • Flower Collections and Mixes
    • Lisianthus
    • Dianthus (Sweet William)
    • Viola (Pansy)
  • Tools & Supplies
    • Cut-Flower Supplies
    • Harvesting Tools
    • Seed Starting Supplies
    • Weed Control
    • Mulches and Weed Barrier
    • Seeders
    • Bed Preparation Tools
    • Greenhouse and Tunnel Supplies
    • Pest and Disease Controls
    • Trellising & Crop Supports
    • Row Covers and Accessories
    • Watering and Irrigation
    • Raised Beds & Planters
    • Transplanters
    • Fertilizers & Amendments
  • Fruit Trees
    • Fruit Trees
    • Berry Bushes
    • Tropical Fruits
  • Shrubs & Hedges
    • Evergreen & Privacy
    • Flowering Shrubs
    • Privacy Shrubs
    • Evergreen Shrubs
  • Featured Products
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

 

Sierra Blanca

Home / Vegetables / Onions
  • Dwarf Grey Sugar -Garden Plant Shop 02206 01 dwarfgreysugarvert2
  • Yankee -Garden Plant Shop 03360g 01 yankee
New
Sierra Blanca

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

Clear
SKU: AM9OB 1700022144 Categories: Onions, Vegetables Tags: Johnny's Selected Seeds, Onions
  • Elevate Your Shopping Experience
  • Quality You Can Trust
  • 100% Quality Promise
  • Green products, guaranteed.
Browse
  • Flowers
    • Aster
    • Celosia
    • Cosmos
    • Dianthus (Sweet William)
    • Flower Collections and Mixes
    • Lisianthus
    • Sunflowers
    • Tulips
    • Viola (Pansy)
  • Fruit Trees
    • Berry Bushes
    • Fruit Trees
    • Tropical Fruits
  • Shrubs & Hedges
    • Evergreen & Privacy
    • Evergreen Shrubs
    • Flowering Shrubs
    • Privacy Shrubs
  • Tools & Supplies
    • Bed Preparation Tools
    • Compost Bins & Accessories
    • Cut-Flower Supplies
    • Fertilizers & Amendments
    • Greenhouse and Tunnel Supplies
    • Harvesting Tools
    • Mulches and Weed Barrier
    • Pest and Disease Controls
    • Raised Beds & Planters
    • Row Covers and Accessories
    • Seed Starting Supplies
    • Seeders
    • Transplanters
    • Trellising & Crop Supports
    • Watering and Irrigation
    • Weed Control
  • Vegetables
    • Beans
    • Beets
    • Broccoli
    • Cabbage
    • Carrots
    • Cauliflower
    • Chicory
    • Corn
    • Cucumbers
    • Eggplant
    • Greens
    • Kohlrabi
    • Lettuce
    • Melons
    • Microgreens
    • Onions
    • Peas
    • Peppers
    • Potatoes
    • Pumpkins
    • Radishes
    • Spinach
    • Squash
    • Tomatoes
    • Watermelons
  • Description
  • Additional information
  • Reviews (0)

Big, mild white onions.

Widely adapted, day-neutral, and matures well anywhere in North America from spring sowing. Suitable for fall planting where short-day onions are normally grown. Produces uniform, large, white-skinned onions with mild flavor and thick rings. Not for long storage. Sierra Blanca is the same variety as Super Star. It has been renamed by the breeder. AAS winner. Also offered as plants and as conventional seed with NOP-compliant pelleting.

Disease Resistance:

  • Pink Root (Intermediate)

Specs:

  • Packet: 250 seeds
  • Avg. 117,800 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 2–7 dry days before moving to dry location. Cure until tops are completely dried; about 2 weeks.

SEED SPECS

SEEDS/LB.: 96,900–127,700 (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 10–15 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 65–70% 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 6–8 weeks before last frost date. Sow 128-cell trays, 1 seed/cell, and cover with 1/4" soil. Transplant 4" apart in rows 12–18" 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., 1/4– 1/2" deep, rows 12–18" apart. Thin to 1 1/2–2" 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 6.0–7.0. 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 “Sierra Blanca” Cancel reply

Related products

New
DRO141TX
Quick View

Vegetables

DRO141TX

$98.80 Original price was: $98.80.$69.16Current price is: $69.16.
New
Barolo
Quick View

Onions

Barolo

$13.00 Original price was: $13.00.$9.10Current price is: $9.10.
New
Supersweet 100
Quick View

Tomatoes

Supersweet 100

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

Vegetables

Atlantic Giant

$15.50 Original price was: $15.50.$10.85Current price is: $10.85.
New
Spicy Micro Mix
Quick View

Microgreens

Spicy Micro Mix

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

Peppers

Helios

$12.00 Original price was: $12.00.$8.40Current price is: $8.40.
New
Specialty Summer Squash Set
Quick View

Squash

Specialty Summer Squash Set

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

Melons

Halona

$14.00 Original price was: $14.00.$9.80Current price is: $9.80.
OUR SHOP
  • My account
  • Checkout
  • Cart
  • Payment Method
CONTACT
  • About Us
  • Contact Us
  • FAQ
  • Returns & Exchanges
CUSTOMER SERVICES
  • Privacy Policy
  • Shipping Policy
  • Delivery
  • Term and Conditions
STAY IN TOUCH

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

    Copyright 2026 © www.gardenplantsale.com
    • Vegetables
      • Peppers
      • Greens
      • Pumpkins
      • Squash
      • Tomatoes
      • Lettuce
      • Microgreens
      • Onions
      • Corn
      • Beans
      • Carrots
      • Radishes
      • Cucumbers
      • Cabbage
      • Broccoli
    • Flowers
      • Sunflowers
      • Tulips
      • Celosia
      • Cosmos
      • Aster
      • Flower Collections and Mixes
      • Lisianthus
      • Dianthus (Sweet William)
      • Viola (Pansy)
    • Tools & Supplies
      • Cut-Flower Supplies
      • Harvesting Tools
      • Seed Starting Supplies
      • Weed Control
      • Mulches and Weed Barrier
      • Seeders
      • Bed Preparation Tools
      • Greenhouse and Tunnel Supplies
      • Pest and Disease Controls
      • Trellising & Crop Supports
      • Row Covers and Accessories
      • Watering and Irrigation
      • Raised Beds & Planters
      • Transplanters
      • Fertilizers & Amendments
    • Fruit Trees
      • Fruit Trees
      • Berry Bushes
      • Tropical Fruits
    • Shrubs & Hedges
      • Evergreen & Privacy
      • Flowering Shrubs
      • Privacy Shrubs
      • Evergreen Shrubs
    • 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.