Myrica hartwegii prefers consistently moist soil but can tolerate periods of drought once established. Water deeply when the top 5-7 cm of soil feels dry. Avoid waterlogged conditions, especially in winter.

Reduce watering frequency during cooler months to prevent root rot.

Prune Myrica hartwegii to shape or remove dead, damaged, or crossing branches. Light pruning can be done in late winter or early spring before new growth begins. Avoid heavy pruning, as it can stress the plant.

Remove suckers that emerge from the base to maintain a desired form.

Propagation is typically done by semi-hardwood cuttings taken in mid-summer. Root cuttings in a well-draining medium, providing bottom heat and high humidity.

Seed propagation is possible but can be slow and may require stratification. Division of established clumps is also an option.

Repotting is rarely necessary for Myrica hartwegii due to its slow growth habit. If container-grown plants become root-bound, repot in early spring into a slightly larger container with fresh, well-draining potting mix.

Ensure the root ball is kept intact as much as possible.