How to Prune field maple?
Little pruning is needed. Remove diseased, damaged, crowded or crossing shoots and unwanted growth. Prune only from late autumn to midwinter.

field maple · Acer campestre
Also known as: common elder; common maple; dog oak; hedge maple; maser tree; master tree
Grow in fertile, moist but well-drained soil in sun or light shade. Suitable for chalky soils. See tree cultivation for further advice
Little pruning is needed. Remove diseased, damaged, crowded or crossing shoots and unwanted growth. Prune only from late autumn to midwinter.