Penstemon whippleanus

Germination Tips

5

Germination is successful only when GA3 is used. See http://botanicallyinclined.org/fridays-seeds-with-the-ga3-seeds-treatment

G

Sow @ 4°C for 3 months, then place @ 20°C for 3 months.
Most of the seeds in our Germination Guide have been offered from time to time in our annual Seed Exchange (Seedex).