Time to plant iris?

lilacs_of_mayMarch 19, 2009

I have two pots of irises that have overwintered under lights in my plant room. They're starting to perk up and send up fresh leaves. Should I plant them outside now, or is it still too cold? The irises outside are growing, and I think a couple are about to send up flower stems.

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iris_gal(z9 CA)

I read on another post that Colorado zone 5 may still receive frosty nights. Wait until April.

    Bookmark   March 21, 2009 at 1:09AM
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berrytea4me(Z5 CO)

Yes, unless you can cover them on frosty nights wait until mid-late April.

Last year I lost daylilies planted in the last week of April due to frost. It went down to 22 degrees the day after I planted them and it was so windy that I couldn't keep any cover on them. 3 of 7 piddled away and finally died from the stress. Iris are tougher than daylilies but I'd still be worried they would get bit pretty hard if their roots are not deeply settled in. I'm worried about everything outside that has been awakened by our recent warm weather.

Only if you can plant them w/o disturbing the roots at all & cover them again to protect from frost would I put them out now. Or you could try using Wall-O-Waters for protection.

I hear we're bracing for snow again on the Front Range this Monday.

    Bookmark   March 21, 2009 at 11:28PM
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