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I came across some nice Gladiolus bulbs in the store. I see they already started to grow their roots and I wanted to know if I can still plant them, since they bloom till October, I think. I live New York, Zone 6a or 6b.

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    You might as well plant them anyway - they won't keep over the winter in a packet, and you just might get a flower or two before winter. – Bamboo Jul 30 '15 at 11:27
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I've done it - they flower before frost here in southeast Pennsylvania when planted that late, but they don't regrow a good corm, so you can't keep them over the winter very well.

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