Mammoth Gray Stripe Sunflower (Helianthus annuus)
Towering up to 12’ tall, these impressive plants produce flower heads measuring up to a foot across! The bright and stately Mammoth promises plenty of seeds for roasting and bird feed alike. Easy to grow.
- 25 seeds minimum
- Germination: 7-10 days
- Maturity: 85-100 days
- Direct sow ½” deep in full sun after last frost or start indoors 4 weeks before last frost. Sunflower roots don’t like to be disturbed, so transplant carefully.
- Favors well drained soil.
- Space 18-24" apart.
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They grew all over in every area I planted them, either as seeds or as transplants. They do get VERY tall, there is one with over 2" trunk growing in a sunny moist area of my yard and it must be at least 15' and isnt sloping over yet like my others did. Bees love these things, they were swarmed with them. I have a few that had smaller, very beautiful flowers that I cut and used in a vase and it smelled really good like sweet honey.
I grow sunflowers every year, and these are my favorite so far. Sadly, I wasn't able to salvage the seeds because... Well... We ate them all. But I will be ordering more - and sharing with my best friend who is a Kindergarden teacher, so that she can grow some with her class.