Help! Newly planted Irises are sending up Flower Spikes

aprilalliums(6b Coastal MA)October 6, 2012


I have a dilemma. Three weeks ago I planted about fifty iris rhizomes from schreiners. They were all a lovely quality, but now three weeks later about five irises are sending up flower stalks. I don't know what to do. Should I just leave them alone and hope for the best for next year or should cut the flower stalks?

Thanks for any advice you can give!

Here's a picture of one of the irises

Thank you for reporting this comment. Undo
hosenemesis(SoCal Sunset 19 USDA 8b)

Gee, you sure can grow those irises! Are any of these listed as reblooming varieties?

I would cut off the stalks if there is going to be a hard frost, but otherwise I would leave them. Sorry- I'm in Southern California, so I don't have any ideas what your conditions are like. Good luck!

    Bookmark   October 6, 2012 at 5:37PM
Thank you for reporting this comment. Undo
aprilalliums(6b Coastal MA)

Thanks Renee. No, none of them are reblooming (the one I showed is monet's blue) as I didn't want to intermix reblooming with nonreblooming because they require different conditions, which is why it really mystified me as why some are flowering. But we aren't expecting any frosts, so I guess I will enjoy the blooms, and hope for the best next spring.



    Bookmark   October 6, 2012 at 6:08PM
Thank you for reporting this comment. Undo
irisrover(9 CA)

Many factors influence rebloom: climate, light, heritage and well grown rhizomes (which these obviously are). Notice the increase is already growing. Let them bloom and enjoy! Cutting off the bloom will do little to promote growth and increase which you can see is all in place.

    Bookmark   October 6, 2012 at 11:45PM
Thank you for reporting this comment. Undo
iris_gal(z9 CA)

Since you are in a cold winter area I would cut the bloom as soon as color begins to show. Enjoy indoors in a vase.

But, energy is being used by the bloom stalk that could be used for other purposes. I've not read of the demise of rhizomes due to leaving the off-season bloom stalk on to open. What has been reported is the failure to bloom the following spring.

    Bookmark   October 7, 2012 at 4:38PM
Thank you for reporting this comment. Undo
aprilalliums(6b Coastal MA)

Hello iris gal,

Maybe I will cut the stalks. You're describing my exact dilemma. If you know of reports of off season blooms hindering bloom the following spring, I think I will cut all the stalks. So the rhizome can save what energy for next spring.


    Bookmark   October 7, 2012 at 10:39PM
Thank you for reporting this comment. Undo
Nancy zone 6

Just my opinion, but I would keep the flower stalk. That rhizome will not produce another flower stalk anyway, next year's flowers will depend on the offset rhizomes & whether they are mature enough to bloom. Perhaps the mother rhizome could put more energy into their growth rather than the bloom, but I'm not convinced it would be enough to make a difference.
I'm certainly no expert, it was only 3 or 4 years ago I learned that rhizomes only bloomed once.

    Bookmark   October 8, 2012 at 8:26AM
Thank you for reporting this comment. Undo
mad_gallica(zone 5 - eastern New York)

The problem with fall bloom is that frost-damage stalks lead to rot. At this point, there isn't a lot you can do about it, one way or the other.

    Bookmark   October 8, 2012 at 12:10PM
Thank you for reporting this comment. Undo

You got some really good soil. Do you use any mulch? I'm new and I can see your rhizomes at ground level. I'm thinking maybe I planted mine too deep again.

    Bookmark   November 26, 2012 at 9:30PM
Sign Up to comment
More Discussions
Had LA Irises clumping and dug 'em up to replant, but...
George Indel
Heirloom Iris
I am the Steward of a historic garden on the grounds...
Dutch Iris
Can Dutch Iris be planted in the Spring ? or are they...
Dividing irises
How often are irises supposed to be divided? I moved...
Sponsored Products
Evander Wall-Mount Glass Sink Set with Mirror
Signature Hardware
Westinghouse 4-1/2 in. x 4-3/4 in. Frosted Bell 8106600
$3.97 | Home Depot
Red Cedar Square Patio Dining Set
Artemide | Tolomeo Mega Suspension Light
Cuisinart DGB-900BC 12-cup Grind and Brew Coffeemaker
Artemide | Tolomeo LED Wall Spot Light
His Personalized Throw Pillow - PIL-BHK-MFIL
$49.99 | Hayneedle
Authentic Models AR014 Duomo Due
Beyond Stores
© 2015 Houzz Inc. Houzz® The new way to design your home™