Water Bladder Campion regularly during its active growing season, especially in dry periods, allowing the soil to dry slightly between waterings. Reduce watering in autumn and winter, as the plant becomes dormant.

Ensure good drainage to prevent waterlogging, which can lead to root rot. Overwatering can be more detrimental than underwatering.

Deadheading spent flowers can encourage further blooming and prevent self-seeding if unwanted.

After the flowering season, you can trim back any leggy or untidy growth to maintain a neater appearance and encourage bushier growth in the following year. Remove any dead or damaged foliage at any time.

Bladder Campion can be easily propagated by seed, sown outdoors in autumn or early spring.

Alternatively, softwood cuttings can be taken in late spring or early summer and rooted in moist, well-drained soil or a potting mix. Division of established clumps in spring is also a reliable method.

Repotting is generally not necessary for Bladder Campion as it prefers to be established in well-drained soil.

If growing in containers, repot every 2-3 years in early spring to refresh the soil and provide more space if the plant becomes root-bound. Ensure the new pot has adequate drainage holes.