Simon Poplar prefers consistently moist soil, especially when young. Water deeply when the top inch of soil feels dry. Avoid waterlogged conditions, which can lead to root rot.

Mature trees are more drought-tolerant but benefit from regular watering during extended dry periods to maintain optimal health and growth.

Pruning is primarily for shaping, removing dead or diseased branches, and improving structure. The best time for major pruning is during the dormant season (late winter or early spring) before new growth begins.

Light thinning can be done in summer to maintain shape and remove crossing branches.

Simon Poplar is most commonly propagated by cuttings. Softwood cuttings can be taken in late spring or early summer, or hardwood cuttings can be taken in late fall or winter.

Ensure cuttings are taken from healthy parent stock and planted in a moist, well-draining medium.

Repotting is typically not a concern for Simon Poplar as it is a large, fast-growing tree often planted directly in the ground. If grown in containers, repotting may be necessary every 2-3 years into a larger container with fresh, well-draining potting mix to accommodate its vigorous root system.