I have planted an espalier pear tree along a rock path. An 8" high concrete wall with a railing above is 12" from center of root ball. It is on the north side of the tree. I am concerned the tree's roots will get too hot from the wall. I boxed the tree base in so the rocks can't cover the root mass. What should I cover the root mass with - bark mulch, white rocks or some leafy ground cover?
Location and Ground Cover for a Fruit Tree
Certified GKH Gardening Expert
Basically, any type of mulch is fine, depending on your preferences. You may want to go with something natural which allows for good air flow and would break down over time, adding nutrients to the soil and roots. This article will help: https://www.gardeningknowhow.com/garden-how-to/info/whats-the-best-mulch-for-my-garden.htm As for ground covers, ivy and minor vinca are both popular choices for under tree ground covers. Here are some other suggestions: https://www.gardeningknowhow.com/special/shade/ground-covers-for-shade.htm