Whitwam Organics
Sunflower- Mammoth Grey Stripe
Sunflower- Mammoth Grey Stripe
Couldn't load pickup availability
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 |
|
Height |
8-12 foot |
|
Bloom Time |
Summer (mid, late) |
Share

Seasonal Staff Picks- Heat Loving
We Help Create & Maintain Flourishing Gardens
We empower people of all ages and experience levels to grow their own food through providing support during every step of the process.
What customers say
-
★★★★★
“Great local Company! I had a larger order of compost soil delivered and it was quality and clean!”
Megan Skye Hunter -
★★★★★
“Plants came in great condition. Dave responds to every question and concern within 24/hr of email. I will order again.”
Erica luft -
★★★★★
“Very healthy Tomato plants arrived quickly and well packaged. I will definitely be ordering again.”
Carol Chewning -
★★★★★
“So glad Plants were packaged very well as delivery driver did not read the live plants notice. Without the extra packaging the plants would not have survived.”
Dick-Jean Bruce