I planted some tall sunflower varieties this spring and they looked amazing through July, but once they got their big flower heads, they started drooping and a couple actually snapped at the stem during a storm last week. Is this normal or am I doing something wrong with spacing or watering?
Tall sunflowers are top-heavy once those big flower heads develop, and they need sturdy support - staking them early (when they're maybe 2-3 feet tall) makes a huge difference in preventing wind damage. Spacing is less the issue here than support; make sure the stems have room to dry out between waterings too, since overly soft stems snap more easily, but honestly the main fix is just getting stakes in there before the flowers get massive.
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