Irises forum: How do you tell if an iris has "bloomed out"?

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Name: Darcy
Reno, NV (Zone 6b)
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djinnevada
Jun 2, 2017 8:29 PM CST
I've read that some of your iris have "bloomed out"...how can you tell?
(Zone 9b)
Region: California
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UndertheSun
Jun 2, 2017 11:08 PM CST
If every rhizome blooms that year... or if your new single rhizomes blooms without any sign of new increase(s).
Name: Darcy
Reno, NV (Zone 6b)
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djinnevada
Jun 2, 2017 11:28 PM CST
Does that mean it just won't bloom next year or is it a goner?
(Zone 9b)
Region: California
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UndertheSun
Jun 3, 2017 12:09 AM CST
A rhizome only blooms once and hopefully sends out increases. It's those increases that will bloom next year, or the year after. If it's a rebloomer, those new increases may bloom again that same year. So if every rhizome blooms and it never ever sends out new increases, then it's a goner. If it ends up sending out some new increases, then it may take a year (or more) off from blooming.

So bloom outs make it hard for vendors selling an iris. Their stock of rhizomes they had available are no longer an option to sell since they bloomed. So they have to decrease the amount available, or pull that iris off of the sales list and issue refunds.
[Last edited by UndertheSun - Jun 3, 2017 8:04 AM (+)]
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Name: Bonnie Sojourner
Harris Brake Lake, Arkansas (Zone 7a)
Magnolia zone
Region: United States of America Region: Arkansas Master Gardener: Arkansas Irises Plant and/or Seed Trader Moon Gardener
Garden Ideas: Master Level Dragonflies Bulbs Garden Art Celebrating Gardening: 2015 Gardens in Buckets
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grannysgarden
Jun 3, 2017 7:21 AM CST
Rob is right. If every rhizome in the clump sends up a bloom stalk that iris has 'bloomed out'. The rhizomes are still healthy and almost always make increases from that rhizome for several years to come. The biggest drawback is that you will most likely have to wait a year -maby two - to see a bloom stalk from that particular iris. I have had many irises bloom out and have never lost that cultivar.
Who plants a seed beneath the sod and waits for growth believes in God. ~~Unknown
Name: Darcy
Reno, NV (Zone 6b)
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djinnevada
Jun 3, 2017 9:42 AM CST
Thanks!

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