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gerhoe Rank attained: Hazel Tree

Joined: 15 Jul 2011 Posts: 6
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Posted: Wed Nov 30, 2011 9:56 pm Post subject: seed propagation |
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I was intending to grow penstemon plants from seed this coming season. The catalogue notes re the seeds...."sow and then chill for three weeks". It seems an unusual instruction. Does somebody out there know exactly the reason for that instruction ? |
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dormouse Rank attained: Rowan Tree

Joined: 05 Oct 2011 Posts: 140 Location: North Dublin
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Posted: Thu Dec 01, 2011 10:15 am Post subject: |
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It's called stratification. With some seeds you need to replicate a cold winter spell to help them break dormancy. Chilling them fools them into thinking spring is here when you take them out. |
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