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Mammoth Blend Sweet Pea Seeds

Mammoth Blend Sweet Pea Seeds

2056

Organic
4.3
Rated 4.3 out of 5 stars
15

Aptly named, Mammoth sweet peas have extra-large flowers with lengthy stems—perfect for cutting! The subtle, sweet scent is delightful, too. Developed in the 1980s from Early Multiflora Gigantea, a Spencer-type sweet pea, this variety boasts drought and heat resistance, which results in a longer season of blooms. Attracts pollinators. Deer resistant. Caution: Most parts of this plant are toxic if ingested.

$4.49
$4.49
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~2.0 g

(~19 seeds)

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  • Variety Info
  • Sowing Info
  • Learn More

Variety Info

Family: Fabaceae

Type: Sweet Pea (Learn more)

Native: Italy

Hardiness: Frost-tolerant annual

Exposure: Full Sun to Part Shade

Bloom Period: Spring to Summer

Plant Dimensions: 5'–6'

Variety Info: 1''–2" flowers with moderate scent in shades of rose, blue, salmon, scarlet, white, lavender, and burgundy.

Attributes: Attracts Pollinators, Drought Tolerant, Heat Tolerant, Frost Tolerant

Non GMO Project

Sowing Info

When to Sow Outside: RECOMMENDED. Cold Climates: 4 to 6 weeks before your average last frost date. Mild Climates: Late fall to early winter for spring bloom. Ideal soil temperature is 55°–65°F.

When to Start Inside: 4 to 6 weeks before your average last frost date.

Days to Emerge: 10–21 Days

Seed Depth: 1"

Seed Spacing: A group of 3 seeds every 6"

Thinning: When 3" tall thin to 1 every 6"

Your hardiness zone is

4.3
Rated 4.3 out of 5 stars
Based on 15 reviews
Total 5 star reviews: 12 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 2 Total 1 star reviews: 1
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15 reviews
  • Brianna
    Verified Buyer
    Rated 5 out of 5 stars
    8/26/25
    Easy to germinate, didn’t work out for me

    These germinated well, were beautiful in bloom, but unfortunately didn’t work out for where I had them. I have a very dry and hot south facing garden and these would have been my best option for a sweat pea cultivar. Too hot though so I’m bummed I didn’t get to see them at their best.

    Was this helpful?
    Which best describes you as a gardener? Intermediate
    BI Profile picture for Botanical Interests
    Botanical Interests
    8/26/25

    Hey Brianna,

    Thank you so much for sharing your experience with our Mammoth Blend Sweet Pea Seeds! We're so glad to hear they germinated well for you and gave you beautiful blooms - that's wonderful! We totally understand the challenge with that hot, dry, south-facing spot though. Sweet peas can definitely be tricky in those intense heat conditions, even the more heat-tolerant varieties. It sounds like you really know your garden conditions well and were thoughtful about your variety choice. We appreciate you taking the time to share this helpful insight about growing conditions - it's really valuable for other gardeners who might be dealing with similar hot, dry spots! Keep on growing 🌻️

  • Dorian D C.
    Verified Buyer
    Rated 5 out of 5 stars
    2/12/25
    5 Stars

    my daughter told me about your company .. she only buys seeds from you! so I thought I'd give it a shot ..

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  • Jeanne T.
    Verified Buyer
    Rated 5 out of 5 stars
    1/21/25
    5 Stars

    The sweet peas are sprouted and look very healthy.

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  • Karen T.
    Verified Buyer
    Rated 5 out of 5 stars
    11/1/24
    5 Stars

    Great seeds!

    Was this helpful?
    Which best describes you as a gardener? Intermediate
  • Dorian D.
    Verified Buyer
    Rated 5 out of 5 stars
    10/26/24
    5 Stars

    Due to very hot weather I just planted them but they have all sprouted.

    Was this helpful?
    Which best describes you as a gardener? Intermediate