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Botanical Interests

Gladstone Onion Seeds

Gladstone Onion Seeds

Regular price $4.49
Sale price $4.49 Regular price
~0.3 g (~80 seeds)
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Product Details

This versatile onion will become your new standby for any recipe. 'Gladstone' is an intermediate-day onion that produces 4"–5" clean and crisp white onions with a delicate, sweet flavor. This onion is ideal for raw applications, like salads, salsas, and sandwiches, and also stands up to cooking and pickling. Intermediate-day onions grow best across the middle of the U.S. in latitudes 32–42. Resistant to pink root. Inert organic coating improves seed visibility when sowing.

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  • Variety Info
  • Sowing Info
  • Growing Info

Variety Info

Days to Maturity: 110 days

Family: Alliaceae

Type: Intermediate-day sweet onion. (Learn more)

Native: Exists only in cultivation

Hardiness: Biennial grown as an annual

Exposure: Full sun

Plant Dimensions: 4" to 5" globe-shaped sweet onions.

Variety Info: 4"–5" white, globe-shaped, sweet onions. 'Gladstone' is an intermediate-day onion with a moderate storage period.

Attributes: Pink Root Resistant

Sowing Info

When to Sow Outside: 4 to 6 weeks before your average last frost date, or as soon as soil can be worked; when soil temperature is at least 45°F.

When to Start Inside: RECOMMENDED. 10 to 12 weeks before your average last frost date. Transplant outdoors 4 to 6 weeks before your average last frost date. The earlier the start, the bigger the bulb. Ideal soil temperature is 60°–85°F.

Days to Emerge: 7–15 days

Seed Depth: ¼"

Seed Spacing: A group of 2 seeds every 4"

Row Spacing: 12" ‒ 18"

Thinning: When 2" tall, thin to 1 every 4"

Growing Info

Harvesting: When onion tops have fallen over and turned yellow or brown, they are ready for harvest. Harvest in the morning, lifting onions with a garden fork. Dry them in the garden in the sun for 2 to 3 days, lightly covering the bulbs with straw, or the tops of other onions to prevent sunscald. Cure onions for 3 to 7 days in a dry area with good air circulation. Once dry, cut the roots to 1/4", and the greens to 1" to create a seal, preventing decay.

Special Care: Keep growing area weed-free. Onion size can decrease 4% per day if competing with weeds‒that’s 50% in 2 weeks. If bulb pushes itself out of the ground, you may cover it lightly with straw, but not soil, as soil will prevent the onion bulb from forming properly.

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Rated 4.5 out of 5 stars
Based on 2 reviews
Total 5 star reviews: 1 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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2 reviews
  • Georgette J.
    Verified Buyer
    Rated 4 out of 5 stars
    Nov 24, 2023
    4 Stars

    Decent Germination so far. Looking forward to seeing the end results.

    EG Profile picture for Epic Gardening
    Epic Gardening
    Nov 24, 2023

    Hey Georgette, We'd love to see photos of the end result too! Thank you so much for sharing and for taking the time to leave feedback! We appreciate you! Keep on growing 🌻️

  • Mary B.
    Verified Buyer
    Rated 5 out of 5 stars
    Nov 2, 2024
    5 Stars

    Love Botanical Interests!

    Which best describes you as a gardener? Intermediate