Huperzia selago prefers consistently moist, but not waterlogged, soil. Water thoroughly when the top centimeter of soil feels dry to the touch. Avoid letting the plant sit in standing water, which can lead to root rot.

Reduce watering slightly during winter dormancy.

Pruning is generally not required for Huperzia selago, as it has a slow, upright growth habit.

If any parts become dead, damaged, or diseased, they can be carefully trimmed back to the base using clean, sharp scissors or pruning shears. This helps maintain the plant's overall health and appearance.

Propagation is typically done through division of established plants or by collecting and sowing spores. Division is best performed in spring when new growth begins.

Spore propagation requires specific sterile conditions and is a slower process, often more suited to experienced growers.

Repot Huperzia selago every 2-3 years or when it becomes root-bound. Use a well-draining potting mix, ideally one formulated for epiphytic plants or ferns, incorporating plenty of organic matter like peat moss.

Repot in spring, choosing a pot only slightly larger than the current one.