Answer: a shingle path. You would think that a shingle path would be a barren desert, as far as seedlings are concerned, wouldn't you? However, nothing is…
Gently scrub the algae and dirt off the bark every year to maintain the colour.
Propagation is by grafting in late winter or by softwood cuttings in the early summer.
Pests, diseases or disorders
A rust and a leaf spot may occur, as well as sawflies, aphids and leaf-mining sawflies.