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rockman50

Hardiness Question

15 years ago

Dear OK Gardeners: I am growing a Muskogee Crape Myrtle here in south coastal Massachusetts. It has been in the ground for 2 years and seems happy. My research on this plant has revealed conflicting hardiness claims (some take it down to -10, others only to +5). This matters for me because the lowest temperature at my location in winter is usually in the 0 to +5 range, and we only go below zero by a few degrees once every few years. During its first winter, the lowest here was only +7. SO far this winter, the lowest has been +1...and I scratched the bark and it is still green. But I am concerned about it long term...when we get a temperature some year in the -5 range, will it live? I am wondering if those of you in the Tulsa or NE OK area grow Crapes (particularly Muskogee), and if so, can you tell yet if they were damaged by the record cold? Any that survive would be super hardy! Your cold was brief and it occurred with deep snow cover, which are mitigating factors. Anyway, I would be interested to know how your Crape Myrtles are doing, and if so, which varieties survived. Thanks for your help!

Comments (4)

  • 15 years ago

    Hi, Rockman, and welcome to the Ok Gardening Forum. I used to work on the South Shore - East Weymouth. Loved everything about my Mass. experience. It is a beautiful, historic place.

    There are newer varieties of Crape Myrtle that are a zone (at least) hardier than Muskogee. Have you planted with as much sun as you can possibly get? These are heat and sun loving shrubs/trees.

    While some Oklahoma growers may experience some dieback of top growth this year, it can be pruned back to good tissue and regrow just fine.

    I've attached an article by Dr. Carl Whitcomb, one of the leading experts on Crape Myrtles, who has done much work in breeding new hardier varieties, varieties with more disease resistance (mildew), and some that are red flowering, which was a totally new color for Crapes. There are a couple hardy to zone 6, too.

    He talks about winter care for your Crape and other maintenance and care instructions for Crapes in general.

    You might one day want to check out a nursery here in Oklahoma that sells online, too. Sooner Plant Farm carries a lot of the newer varieties.

    Hope this helps!

    Susan

    Here is a link that might be useful: Article by Dr. Carl E. Whitcomb

  • 15 years ago

    Thanks Susan. The local nursery was selling the Muskogee, so that is what I bought. But I know there are more hardy varieties. I do have it planted in full sun with full southern exposure in an enclosed patio area with the protection from wind on all sides but the south side. So, it is in the warmest possible microclimate. So far so good. It is getting large and growing vigorously. If it bites the dust, I will search for a more hardy variety. It is too bad that nurseries in SE Mass have not yet figured out that some hardier varieties exist that could be useful in our area.

  • 15 years ago

    Even if it freezes back, It should rebound from the roots very rapidly. Even here in north east Oklahoma, we have crape myrtle freeze back every few years, but they come back strong. I recorded 12 below zero here and I expect several of my crapes will have to be cut back....

  • 15 years ago

    Rockman, we complain all the time that our nurseries, and especially the big box stores, carry plants that are unable to tolerate our heat, like Delphiniums and many conifers, for example. Unsuspecting people buy them, though, because they're pretty and they don't know any better and they certainly don't realize, until it's too late, that they will succumb as soon as the temps reach 80 and above. Our summers generally run above 90 degrees and are just too hot for a lot of your Northern beauties. Oh, what I would give to grow Lupines!

    Susan

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