Willowleaf Meadowsweet prefers consistently moist soil. Water regularly, especially during dry periods, to prevent the soil from drying out completely. Aim for deep watering to encourage strong root development.

Reduce watering slightly in autumn as the plant enters dormancy.

Prune after flowering in late summer or early autumn to shape the plant and encourage new growth for the following year. Remove any dead, damaged, or crossing branches.

Heavy pruning in early spring can also be done to rejuvenate older plants and promote vigorous flowering.

Spiraea salicifolia can be propagated by semi-hardwood cuttings taken in mid-summer. Rooting hormone can improve success rates.

Alternatively, propagation can be achieved by division of established clumps in early spring or late autumn.

Container-grown Willowleaf Meadowsweet typically requires repotting every 2-3 years. Repot in early spring before new growth begins.

Choose a pot that is slightly larger than the current one, using a well-draining potting mix. Water thoroughly after repotting.