You need to chip the seed coat. I use a nail clipper and just nip off a tiny piece of the coat, maybe 1 mm or less so the underlying white endosperm is showing. After you have made a chink in the armor, soaking overnight is usually enough to cause the entire seed coat to crackle. I then sow in moist promix and they eventually emerge as two gigantic square cotyledons. Here they aren't winter hardy, so I start in early spring in the greenhouse and plant them out in late April.
If your seeds don't work, let me know and I'll send you some more. I have several sacks of them.
Bob
On Thursday, July 7, 2022 at 03:44:57 PM EDT, oooOIOooo via pbs <pbs@lists.pacificbulbsociety.net> wrote:
I have Ipomoea purga from SX 480, courtesy of Robert Lauf. Thank you!
My usual practice with Ipomoea seeds is to soak until they swell, then plant. With the annuals this is usually overnight. With the others I change the water daily. But it's been well over a week and the two I. purga I've been soaking are doing nothing. These come from very dry environments in habitat.
Have others sprouted these? Should I continue soaking or just put them in the ground? Should I scarify them?
Leo Martin
Phoenix Arizona USA
Zone 9?
Sent with Proton Mail secure email.
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