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Perennials

Zone Leicester | Glyn44 added on September 18, 2016 | Answered

I have bought perennial plug plants, which I intend to bring on in pots. When they have matured somewhat, do I overwinter them in the greenhouse or plant them straight out into the border, say in October? Regards, Glyn.

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    Alisma
    Certified GKH Gardening Expert
    Answered on September 18, 2016

    Perennials can be planted in early fall, but the earlier the better, unless you live in a warm climate with very little frost during the winter. The reason is that you want the plants to establish strong root systems in the ground before frosts begin.

    In a colder climate, you could overwinter your perennials in the greenhouse or in a dormant form depending how big they are, then plant in early spring. But the best option is probably to plant them now and cover the roots with mulch, and perhaps a cloth cover over all of them:

    https://www.gardeningknowhow.com/plant-problems/environmental/protecting-plants-winter.htm

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