Seedling pics: First, a Hardin's Miniature seedling. Note the short internode distance between leaves and the natural curling of the leaves.
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Note the short internodes and thick stem on this Rae-F2:
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This Rae-F2 has the long, droopy, "wispy" leaves of the other parent, Anna Maria's Heart coupled with the leaf curl of Hardin's Mini, with a thin stem:
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Nan