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Germinating Sea Kale (Crambe maritima)

 
Posts: 9
Location: Canada, Zone 5b
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I was wondering if anyone has tried germinating sea kale from seed? I have read that nicking or squashing the seeds are necessary/desirable to help germination.

I planted mine out in a seed tray with compost about 3 weeks ago, but I have seen no signs of sprouting yet. I will be trying out the nick/squash method with some left over seeds and let you know how it turns out.

cheers.
 
pollinator
Posts: 173
Location: Henry County Ky Zone 6
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i cracked mine between two boards and 3 out of 9 germinated. planted them in the garden yesterday. Hope they keep growing!
 
Peter Jackson
Posts: 9
Location: Canada, Zone 5b
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Thanks Kris.

After taking another look at the seeds, there is a very thick outer shell. I cracked some under a spoon an board (I accidently smashed the seed for one), and some I nicked with scissors.

See how these ones fair.
 
pollinator
Posts: 2520
Location: Kent, UK - Zone 8
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I soaked mine in water for 24 hours (with 3 or 4 changes of water).

I then kept them damp on paper towel, giving them a rinse off twice a day. Around 3 weeks later one of the 10 had germinated.

Unfortunately I then went away for a few days and my mum "tidied up". I didn't crack or scratch any of them, and was hopeful for more of them germinating.
 
Peter Jackson
Posts: 9
Location: Canada, Zone 5b
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It sounds like propogating from root cuttings is the prefered method with these.
 
Posts: 87
Location: SW Georgia, zone 8b
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Thanks for the thread! I have been seeing Sea Kale seeds for sale and was ready to buy some but I guess I'd better do more research first. I didn't know how much I didn't know!
 
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