Zone White Plains,NY | junem added on June 12, 2016 | Answered
How to know when the seeds are ready to be harvested on columbine?
Answered on June 13, 2016
When the petals drop from the plant, the seed pod left is green. When the seed pod turns brown it will began to open. You will want to harvest the seeds just before the seed pod opens and spills the seeds.
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