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Prized for its bright yellow flowers, Black Mammoth produces an abundance of delicious seeds to be enjoyed. Its giant flowers are a marvelous sight as they grow up to 30 cm (12”) across on plants that reach up to 2.5-3 m (8-10’) in height! Non-neonic-- safe for bees!
After all danger of frost, sow seeds in open ground well exposed. Cover with 1 inch of soil. When plants are 4 inches tall, thin. Needs lots of water.
Planting Depth: 1.3 cm (1/2")
Grows Best In: Full Sun
Growing Height: 2.5-3 m (8-10')
Seed Type: Open Pollinated
Plant Type: Annual
Latin Name: Helianthus annuus
Days To Bloom: August to September
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