Failure at Overwintering rose cuttings

yellow_rose_man(z3 Ont.)April 18, 2009

Hello everyone,I am deeply dismayed,last fall I put away over 400 well rooted cuttings in one gallon pots.I placed them underneath our deck so they wouldn't get a heavy snow load on top of the mulch and break the canes(which is what happened the previous winter).I placed snow fence around the deck,then filled the area with leaves to protect the roses from the cold.The results-probably half or more of the roses are dead.

Question 1-should I have used straw instead of leaves?

Question 2-should I maybe be burying them below ground(pulling them out of their pots and burying them bareroot)?

Question 3-should I try overwintering them in my unheated hoophouse?I am afraid of it getting warm and them breaking dormancy on a sunny day in winter?

The temperatures here can get to -40, and I know if I were to keep them in the basement,it is warm enough they wouldn't go dormant and the spider mites,aphids would have a feast.

Thanks in advance for your help,it is a long way from winter again,but i need toi come up with a method that doesn't cause me to lose 50% or more of my cuttings.

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mad_gallica(zone 5 - eastern New York)

What are your basement temperatures? I keep first year cuttings in the basement under lights. It's cool enough down there (+15C)that spider mites aren't a problem, and aphids are fairly easy to control with pyrethrum.

    Bookmark   April 18, 2009 at 3:34PM
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yellow_rose_man(z3 Ont.)

Hi,not sure what the basement temperatures are,but I think that they are higher than that as it is well insulated,not a lot of room either.

    Bookmark   April 19, 2009 at 12:08PM
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