Keep the soil consistently moist, especially during dry periods. Itea ilicifolia prefers regular watering but avoid waterlogged conditions, which can lead to root rot.

Water deeply when the top 2-3 cm of soil feels dry to the touch. Reduce watering in winter when the plant is dormant.

Prune after flowering to maintain shape and remove any dead, damaged, or crossing branches. Light trimming can be done to encourage bushier growth.

Avoid heavy pruning, as it can reduce the number of flower spikes produced in the following season.

Holly-leaved Sweetspire can be propagated from semi-hardwood cuttings taken in summer. Dip the cuttings in rooting hormone and plant them in a well-draining potting mix.

Keep them consistently moist and in a warm, humid environment until roots form.

Young plants may benefit from repotting every 2-3 years into a slightly larger container. Use a good quality, well-draining potting mix. Repot in spring before new growth begins.

Mature plants generally prefer to be root-bound and require less frequent repotting.