I have a bunch of seedlings that germinated in the fall of 2008 from crosses made in 2004. I was moving, and I knew I would not be able to handle seedlings in the move, so I just threw the seed in an big manilla envelope and into a box. That box got no special treatment and went through heat and freezes. This fall when I got my new greenhouse, I soaked them for a few days, changing the water daily, then planted them. To my surprise, I got pretty good germination a couple months later. And they were from re-bloom and made in August and September 2004 (back when I lived in coastal California, with little or no frost).
So I say; Plant them, what do you have to loose?
From: Laurie Flynn <firstname.lastname@example.org>
Sent: Sunday, May 10, 2009 8:19:06 AM
Subject: [iris-photos] seed question
Hello all -
I have a question about seed longevity. I came across a few envelopes of seeds from crosses I made 3 years ago. Would these seeds still be viable, or should I just pitch them? Storage conditions were low to average room temperature and humidity.
Southern Maine, z4