Water consistently during the growing season, allowing the soil to dry slightly between waterings. In winter, reduce watering significantly, providing just enough to keep the soil from becoming bone dry.

Overwatering can lead to root rot, especially in cooler conditions.

Pruning is typically not a significant requirement for Blackstonia perfoliata. Deadheading spent flowers can encourage further blooms and maintain a tidy appearance.

If the plant becomes leggy, light trimming after flowering can help promote a bushier habit.

Blackstonia perfoliata is easily propagated by seed. Sow seeds in early spring, either directly outdoors in a well-drained location or in pots under cover.

Germination is usually successful with light and consistent moisture. Division is rarely necessary.

Repotting is generally not necessary for Blackstonia perfoliata as it is often grown as an annual or short-lived perennial. If overwintering indoors and needing to repot, do so in early spring before new growth begins.

Use a well-draining potting mix.