Clematis in Containers - Knowledgebase Question

Alma, MI
Question by llhooker
May 23, 2001
I have two big whiskey barrels for plants. Can I plant a clematis in them and it survive the winter?


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Answer from NGA
May 23, 2001

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It's hard to predict, but it might. Here's some pointers on overwintering plants from "Perennials for Dummies" by Marcia Tatroe and NGA.

1. Cut back on watering as temps. cool. This signals plants that it's time to go into dormancy and helps "harden" them off.

2. If you had any insect problems, remove any plant debris and mulch from that area so eggs and disease won't overwinter.

3. Place a fresh 4-6 inch layer of organic mulch around the base of the plants.

4. If your temps. are regularly below 0 degrees Farenheit, don't cut back the perennials until late winter or early spring. The dead foliage helps protect them from cold.

5. After the ground freezes, cover the whole bed (in your case, the barrel) with a loose layer of straw or hay. Leave it until early spring and then gradually remove it as temps. warm. Don't remove it all at once.

Be sure to plant a variety of clematis that is hardy for your area. Some are more frost-tender than others.

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