Answer: Dusty miller is considered an annual in your gardening region. You may be able to overwinter the roots in the pot in your garage. Wait until frost nips the tops of the plants. This signals them to go into dormancy. While dormant the roots should not need water but you'll want to make sure the soil doesn't get bone dry or the roots will dehydrate. Heather is a perennial and it loves acidic soil so plant your heathers in the garden, amending the soil with peatmoss or compost to help lower the soil's pH. Plant them now and mulch around each plant with additional compost, or shredded leaves or pine needles. The mulch will help protect the roots from winter cold. In the spring you should see new growth. Enjoy!
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