Raising Bed Height

Question

I have an old, established landscaping bed in the front of my house that includes a mix of perennials like daylilies, hostas and daffodils in addition to shrubs/small trees. We need to raise the bed, as it slants inward in spots toward our 90-year-old basement. How can I add several inches of dirt without killing the perennials? What time of year should I do it?

Answer 1

In order to prevent damage to your plants, it would be better to wait until the end of the growing season (probably some time in fall) before raising the height of your beds.