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Botanical Interests

Red Amposta Bulb Onion Seeds

Red Amposta Bulb Onion Seeds

Regular price $2.99
Sale price $2.99 Regular price
~0.75 g (~130 seeds)
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Product Details

Looking for a great tasting red onion? This intermediate-day onion produces large, reddish-purple, globe-shaped onions with pretty red and white rings filled with snappy, sweet flavor. Use on sandwiches and hamburgers, in salads and relishes, or any other recipe calling for sweet red onion. Intermediate-day onions grow best across the middle of the U.S. in latitudes 32–42.

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  • Variety Info
  • Sowing Info
  • Growing Info

Variety Info

Days to Maturity: 115 days

Family: Alliaceae

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

Native: Exists only in cultivation

Hardiness: Biennial grown as an annual

Exposure: Full sun

Plant Dimensions: 3" to 4" round bulb

Variety Info: 3"–4" reddish- purple, globe-shaped, sweet onions.

Attributes: Frost Tolerant

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"–16"

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.

4.0
Rated 4.0 out of 5 stars
Based on 6 reviews
Total 5 star reviews: 3 Total 4 star reviews: 2 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 1
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6 reviews
  • Nicole H.
    Rated 5 out of 5 stars
    Aug 15, 2023
    5 Stars

    This was my first year growing onions, let alone growing this variety. Almost all of my seeds germinated. I started my seeds indoors. Once I had them hardened off, I planted them per the seed packet, and they've all survived and thrived. I also recently pulled one up to use in homemade spaghetti sauce, and it was extremely flavorful, and aromatic. This will be a repeat variety for me every year. For reference, I live in zone 6A.

  • jameson h.
    Verified Buyer
    Rated 4 out of 5 stars
    Aug 3, 2024
    4 Stars

    I haven't used the seeds yet but ready for next season!

    Which best describes you as a gardener? Beginner
  • Michael B.
    Verified Buyer
    Rated 5 out of 5 stars
    May 14, 2024
    5 Stars

    The seeds were way beyond what I expected them to be. When I planted them I expected the growth process to take a lot longer than they did. However every single seed grew fast - firm - hearty - healthy and extremely quickly. So much so that I wasn’t prepared to transplant them outside as I live in northern Wisconsin and the frost hasn’t in the mornings hasn’t stopped yet. I will without hesitation purchase seeds from Epic Gardening again and quite strongly encourage anyone who reads this to do the same, because there is definitely no better place to do so.

    Which best describes you as a gardener? Beginner
  • Christina R.
    Verified Buyer
    Rated 5 out of 5 stars
    Dec 29, 2023
    5 Stars

    Best onion to grow. They grow really big, even in not so great growing conditions. Great storing onion. The only thing better would be if I could buy these seeds in bulk instead of having to buy 20 packets to get the amount of seeds I like to grow. I wish the voles didn't like them either.

    Which best describes you as a gardener? Expert
  • mark
    Verified Buyer
    Rated 1 out of 5 stars
    May 9, 2022
    1 Star

    I started them indoors.. Few germinated and those that did didn't survive long.. Waste of time