While I have grown bearded iris for years, I have not experimented
much with the advice that I have read. That said, the advice I read
long ago was that bearded iris will not bloom if they are planted
too deep. The rhizomes should (I am told) be at least a little
exposed above the soil level.
It may be chance, but that is how I have always planted/replanted
them, and the only failure to bloom I've seen is in the plants this
year, which were transplanted much later than they should have been
last year. (One of four is blooming.)
I've rarely done much to feed iris, other than keeping a mulch for
the worms to work in. They seem to do pretty well in pretty poor
clay, though I couldn't say how.
All of that is living in seasonal climates (Ohio and N. Virginia).
I never grew iris in a freeze-free climate (though I know they do well).
Yep. They like to get some baking rays of the sun on those bits above
They also don't like being crowded. If left too long before being
lifted and separated, they don't flower well. Additionally once each
rhizome has flowered, that rhizome won't flower again but it will
produce new rhizomes in the late summer and these will usually flower
int he following summer.
I think this is my problem. They have been in the ground for about a year.
They don't show any signs of producing anything...so maybe this summer? I'm
about ready to just dig them up and toss out to make room for something else.
You should be able to leave them undisturbed for at least 3 years before
they'd be considered to be too crowded because they grow and crowd
themselves out. If you've crammed them in amongst other plants so that
they are crowded form the start then that could (just could) be a problem.
Check first to make sure that a) you haven't planted them too deep (the
rhizome should show at least a third above the soil) and b) they are
getting enough heat and light (at least 6 hours of full sun per day)
and, c) you haven't over fed them so that they are producing lots of
leaves but no flowers.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.