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Mexican Giant Dioon (Dioon spinulosa) seed care


SilverDragon

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I received three giant dioon seeds from Seedman.com today, how do I properly germinate them? Do I soak them like palm seeds? They are massive, like the size of small eggs, and I hear rattling inside when I shake them.

Edited by SilverDragon
Clarification of species name

“Study nature, love nature, stay close to nature. It will never fail you.” –Frank Lloyd Wright

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This is what works for me. Soak seeds in water for 2 days. Place sideways on damp pumice, at a temperature between 28-35 degrees celsius. Once seeds germinate pot them up in pumice.

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23 minutes ago, CharltonEJ10 said:

This is what works for me. Soak seeds in water for 2 days. Place sideways on damp pumice, at a temperature between 28-35 degrees celsius. Once seeds germinate pot them up in pumice.

Thanks!

“Study nature, love nature, stay close to nature. It will never fail you.” –Frank Lloyd Wright

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Did they float or sink initially?  And what about after their soak?  I don't like being the negative one, but usually rattling isn't a good sign. It doesn't mean they aren't viable, but their chances are better if the interior parts haven't separated from the exterior shell.  I think it means they were allowed to dry, but could be incorrect.  Sorry for the poor terminology.   Again, not trying to be a downer, just trying to help understand if germination doesn't work out. 

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I started soaking them this morning and they all initially floated. So far, however, one has sank to the bottom of the cup they're in.

“Study nature, love nature, stay close to nature. It will never fail you.” –Frank Lloyd Wright

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