SKU: 18285185225
heirloom sunflower seeds for planting

heirloom sunflower seeds for planting Sunflower - Mammoth Grey | Mylar Packaged

Sale price$26.07 Regular price$28.97
Save 10%

Pay in installments of $7.24 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Oct 9 - Oct 14

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

heirloom sunflower seeds for planting Sunflower - Mammoth Grey | Mylar PackagedPacked in Resealable Long Life Mylar Moisture Proof Packets 10+ Year Survival Seed Viability Category: Herb Type: Sunflower Variety: Mammoth Grey Family: Asteraceae Botanical Name: Helianthus annuus Hardiness Zones: 5,6,7,8,9 Growing Difficulty: 1 Soil PH: 4. 5 to 8. 0 Fertilizer Requirements: 10 10 10 Soil Type: Well Drained Soil Germination (days): 14 to 28 Soil Temp for Germination: 60 70F Lighting Conditions: FULL SUN Days to Maturity: 90 120

Packed in Resealable Long Life Mylar
Moisture Proof Packets
10+ Year Survival Seed Viability

  • Category: Herb
  • Type: Sunflower
  • Variety: Mammoth Grey
  • Family: Asteraceae              
  • Botanical Name: Helianthus annuus
  • Hardiness Zones: 5,6,7,8,9
  • Growing Difficulty:  1                        
  • Soil PH:  4.5 to 8.0
  • Fertilizer Requirements: 10-10-10
  • Soil Type: Well Drained Soil
  • Germination (days): 14 to 28            
  • Soil Temp for Germination: 60-70°F
  • Lighting Conditions: FULL SUN
  • Days to Maturity:  90 - 120
  • Planting Depth:  1/4”
  • Distance Apart (in row):  12”
  • Row Spacing: 12 - 18”

Sowing Instructions

DIRECT SOW IN FULL SUN WHEN SOIL TEMPS ARE ABOVE 60°F

Starting Indoors

6-10 WEEKS BEFORE LAST FROST

Growing Tips

Direct sow your seeds in the garden when soil temperatures are between 60-70°F. Transplant from indoor starts when soil temperatures are around 70°F. Plant multiple seeds outdoors or in each cell (indoor starting) and thin to the most successful plants.

We tend to plant Sunflowers at random without thinning and allow them to establish on their own without intervention.

Culinary Uses

Mammoth Grey Sunflowers are known for their large heads and numerous seeds. The seeds harvested are usually roasted, salted and eaten as a snack. Birds also love sunflower seeds, so do not be surprised to see them stealing your seed crop.

Harvesting Seed

Harvesting sunflower seeds can be fun for everyone. Wait until the sunflower petals start to wilt and fall off the sunflower head. The head should start to become dry and brown and may even start to fall over.

Once the heads start to become brown, place a paper bag upside-down over the head of the sunflower. (This protects your seeds from birds and squirrels).

Check your sunflower heads daily to see if the seeds have become hard. Once the seeds are hard enough to harvest, cut the stem of the flower and hang it upside down to dry thoroughly. Once the heads and seeds have dried enough, running your hands back and forth over the seeds will release them.

Roast your seeds as a snack or save them for next years harvest. (We recommend saving your seeds from the first harvest to produce hundreds of plants the next year)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 18285185225

Discover Niche Categories That Outsell heirloom sunflower seeds for planting

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 9 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
Amazon Customer
Boise, US
★★★★★ 5
Good Value!
Material Type: Recycled Polyester, Color: Blue Heather, Size: XX-Large
I bought one of these jackets a few years ago it is fairly thick and is great for outdoor wear. This new one is thinner material by quite a bit, but still well made. I like the zippered pockets. It is fuzzy and comfortable. Might even buy a third one in a different color!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 23, 2026
G
Verified Purchase
George W. Shorago
Lake Worth, US
★★★★★ 3
Sizing too small
Material Type: Recycled Polyester, Color: Oatmeal Heather, Size: Medium
Warm and comfortable. BUT, the sizing is off. I ordered a medium , but it fit like a small:definitely order one size larger than you usually wear.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
B
Verified Purchase
BPGLEFT
Omaha, US
★★★★★ 5
Quality with a perfect fit!
Material Type: Recycled Polyester, Color: Forest Green, Size: X-Large
This has a nice weight to it and fits my husband perfectly and the length on the arms are prefect. I bought my husband a Lands End fleece and found that I liked this a lot better! The Land's End fleece was nice, but the sleeves are way too long! This was a much better price and will be back for more! Also has a great color assortment.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 2, 2025
S
Verified Purchase
Sheila Lange
Belleville, US
★★★★★ 1
Very unhappy
This is how I found my shirt outside. I want a refund or a new shirt sent to me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 30, 2024
A
Verified Purchase
Armando
Houston, US
★★★★★ 5
Mini Melissa
Size: 9 Toddler, Color: White/Pink
Beautiful my daughter love it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026

recommand products