Sunflower- Mammoth Grey Stripe
Helianthus annuus
The flowering plant Helianthus annuus is native to the Mediterranean region. The 'Mammoth Grey Stripe' (Common Sunflower) is a tall annual with large flowers that can measure up to 8-12 inches (20-30 cm) in diameter and light golden-yellow petals that cover a dark chocolate central disk. Bees, butterflies, and birds are attracted to the beautiful flower heads that are born atop robust stalks, and they make a real statement in the landscape. It's simple to plant. Large seeds with a decent oil content, Grey Stripe are a perfect sunflower for seed harvest.
|
Days to germination |
5-12 days |
|
Days to maturity |
70-100 days |
|
Life cycle |
Annual |
|
Plant time |
Spring |
|
Spacing |
48 inches |
|
Sun |
Full sun |
|
Soil temperature |
70-85 F |
|
Optimum soil P.H |
6.5-7.5 |
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Height |
8-12 foot |
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Bloom Time |
Summer (mid, late) |