Grey Poplar prefers consistent moisture, especially when young. Water deeply and regularly during dry periods to maintain soil dampness. Avoid waterlogged conditions, which can lead to root rot.

Established trees are more drought-tolerant but benefit from supplemental watering during extended heatwaves.

Prune to shape young trees and remove dead, damaged, or crossing branches. The best time for major pruning is during the dormant season (late winter).

Light pruning can be done in summer to control size or remove suckers. Aim for an open structure to allow for good air circulation.

Grey Poplar is typically propagated by cuttings. Softwood cuttings can be taken in late spring or early summer, while hardwood cuttings can be taken in late autumn or winter.

Dip cuttings in rooting hormone and plant in a moist, well-draining medium. Rooting is usually successful.

Repotting is not applicable as Populus × canescens is a large tree planted in the ground.

For container-grown specimens, repotting would be done when the tree becomes root-bound, typically every 2-3 years, using a larger container and fresh, well-draining potting mix.

This is usually only done for young trees intended for transplanting.