HYB: question - toughness/delayed germination?

Does anybody have any data about performance of seedlings from first
year versus delayed germination seedlings in relation to difficult
climate/disease?

My intuition is that seeds that require two chilling periods (two
winters outdoors) might be better adapted to my erratic
climate/weather.  Some early fall seedlings here seem to have been
weaker than seedlings that germinated the following spring.

I think I see some difference in batches of seedlings from seeds planted
outdoors in the fall the "normal" way.  Only one cross with much data -
BEHOLD A LADY X CELEBRATION SONG - fairly low germination rate the first
year, most of which died, followed by much higher germination the second
year and a few more the third year.  Seedlings from the third spring
seem much more robust (healthier) than the first two year's.

--
Linda Mann east Tennessee USA zone 7/8
East Tennessee Iris Society <http://www.korrnet.org/etis>
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