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Vegetable Gardening

Mammoth Sunflower Bolting

11 years ago

I sowed several dozen mammoth sunflower seeds into one of my beds on August 15. This bed had just previously had manure tilled in and fresh mulch when the sprouts were a few inches tall.

Daily watering, 8 hours of sunlight a day, temperatures around 90/79 High/Low. Florida Zone 9

They're about 12-18" now, but they have all begun to form flowers, so I'm going to remove them and plant something else there. What caused them to flower so early?

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Comment (1)

fruitnut Z7 4500ft SW TX
11 years ago
It's probably flowering early in response to the shortening day length. That's natures way of assuring seeds before freezing weather. In your zone nature was a bit early. But in other areas of the country the response would be spot on with planting that late.
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