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Re: Plants Ready for rebloom

I was checking fans of Immortaality and Queen Dorothy. Both plants that rebloom reliably her in Aug/Sep and known to be summer rebloomers.

They both had fans in clumps with 8 and 9 leaves, but no signs of rebloom. Still the temperature in evenings are from 7-12 C every night. Last year I noted rebloom on Immortality after evenings were minimum of about 15C. I

With no signs of rebloom as of yet, I'm suspecting the warmer nights are needed by these cultivars, and probably all summer reebloomers in order to stimulate rebloom. They certainly have the plant growth and development needed so that is not the sole requirement.

Could anyone keeping night temperatures try and se if they conect this to initiation of flower stalk development?

Chuck Chapman

Date: Mon, 30 Jun 2008 21:46:52 -0400
From: irischapman@aim.com
Subject: [iris] Re:Plants ready for rebloom

Plants are ready for rebloom when 6-7 leaves in fan. This count
includes any leaves that have dies.

I was counting leaves on bloomstalks and always got 6 or 7. The count
included all dead leaves plus the leaves on the flower stalk.  I was
also counting leaves on the SDB rebloom and same count.

Thus, you can now evaluate if the summer  bloomers are ready for
rebloom but just waiting for right conditions.  I was going to check
Immortality tonight but skeetres were too hungry.

Rebloom should  occur about 2 weeks after event that triggers rebloom

Could those people interested in rebloom triggers start checking their
summer rebloomers for leaf count?


Chuck Chapman

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