Jeffersonia dubia

Germination Tips

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Sow immediately. The viability of these seeds is short or the species propagates best with fresh seed. Stored seed might be coaxed into germination with temperature cycling and patience.

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This species needs special care as described.

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Use repeated cycles of 20°C, then 4°C for 3 months each. Germination is very prolonged.
Special Care: 
Hydrophilic, sow as soon as seed is ripe; If not sown right away after collecting the seeds need to be kept moist at all times to remain viable. For storage put in plastic bag with barely damp vermiculite; keep them warm during summer, coolish towards the fall and then 4⁰C at the onset of winter. Do not store them in the freezer because the formation of ice crystals will damage cell membranes
Most of the seeds in our Germination Guide have been offered from time to time in our annual Seed Exchange (Seedex).