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Non-GMO
Russian Mammoth Sunflower
$3.99
Packet - 25 Seeds
Flat $5.99 shipping
Germination guaranteed
Non-GMO
Quick Facts
Days to Maturity80 days
SunlightFull Sun
Spacing18–24 in.
Germination7–10 days
Growing Information
Growing Russian Mammoth Sunflower
The only variety to grow for giant sunflowers! At 10 to 14-in. across, the largest blooms on the tallest plants growing up to 16-ft., although the average is closer to 10 to 12-ft. Begin to take cuts in about 80 days after sowing.
- Sun: Full Sun
- Bloom Size: 10 - 14 Inches
- Stem Length: 18 - 24 Inches
- Height: 10 - 16 Feet
- Hardy Annual
Catalog Page: 77
Sowing depth
1 in.
Plant height
10 - 16 Feet
Botanical name
Helianthus annuus
Questions
FAQ
How deep do I plant them?
Sow at a depth of 1 in..
How long until they germinate?
Typical germination: 7–10 days.
How far apart should I space the plants?
Recommended spacing: 18–24 in..
How much sun do they need?
Recommended sun exposure: Full Sun.
What’s your germination guarantee?
We stand behind the germination quality of our seed. If you have a germination issue, contact our team and we'll help make it right.
Not sure when to plant in your area?
Planting dates depend on your local frost dates and growing zone.
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Russian Mammoth Sunflower$3.99 · Packet - 25 Seeds
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