Winter care of Perennials - Knowledgebase Question

Watertown, Ma
Question by empirelimo1
October 25, 2009
I have three types of perennials in my garden Day Lilies, Coreopsis Grand Baby Sun and Lilum Asiaticum, should I cut them down for the winter, if so how far and do i need to cover them??

Answer from NGA
October 25, 2009


Wait until frost kills the tops of the plants (which signals the plants to go into dormancy), then cut the dead foliage off at ground level and cover over the crowns of the plants with several inches of organic matter such as shredded leaves, compost, straw or even pine needles or pine boughs. They will be protected all winter long and you can brush away the organic mulch in the spring. Enjoy!

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