Galium abaujense prefers consistently moist soil but can tolerate short dry spells once established. Water thoroughly when the top 2-3 cm of soil feels dry. Avoid overwatering, which can lead to root rot.

Reduce watering slightly during winter dormancy.

Pruning is typically minimal and mainly for aesthetic purposes or to control spread.

Trim back leggy or overgrown stems in late spring or early summer after flowering to encourage bushier growth and potentially a second bloom. Remove dead or damaged stems anytime.

Galium abaujense can be propagated by division of clumps in early spring or autumn. Alternatively, softwood cuttings can be taken in late spring and rooted in moist, well-draining potting mix.

Seed propagation is also possible, sowing seeds in autumn or stratifying them.

Repotting is rarely necessary for Galium abaujense as it prefers to be slightly pot-bound. If it becomes root-bound or the soil is depleted, repot in spring to a slightly larger container using a well-draining soil mix.

Ensure good drainage holes.