Perennial Care - Knowledgebase Question

Huntington, NY
Question by jnme3
November 13, 1999
This is the first time I have planted perennials. I know what to do with some of them but others I do not such as:
Daylilies - I planted some in 4 medium size containers;
What do I do to winter protect the roots for next year?

Dalmation Bellflower;
Ozark Sundrops;
Agastache Blue Fortune;
Do I cut these back (how far?) at this time of the year or do I leave the branches and/or leaves on these plants?


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Answer from NGA
November 13, 1999

0

In general, leave the plants alone until frost nips back the tops. When the tops are brown and dry, trim them off. If the crown or some of the foliage seems evergreen, leave it alone. On some daylilies for instance, there is a showing of evergreen foliage, on others there is nothing showing for the winter. In the spring, tidy away any soft or brown foliage being careful not to damage emerging growth. Maintain several inches of mulch around the plants (but not overtop any visible crown) year round to help moderate soil temperatures and maintain soil moisture.

Your plants are hardy ones, but since they are in containers they may need extra winter protection for their roots. You might want to sink the containers in the ground to insulate the roots better, or perhaps surround them with mulch or another insulating material. If possible, protect them from wind, too.

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