Cuthbert's turtlehead prefers consistently moist soil. Water deeply when the top inch of soil feels dry. Avoid letting the plant sit in waterlogged conditions, as this can lead to root rot.

Regular watering is especially important during dry spells and the flowering period.

Deadhead spent flowers to encourage further blooming and maintain a tidy appearance. After the first frost, cut back the stems to about 10-15 cm above the ground.

This helps prevent disease and prepares the plant for winter.

Chelone cuthbertii can be propagated by division in early spring. Carefully dig up established clumps and separate them into smaller sections, ensuring each section has roots and shoots.

Replant immediately in well-prepared soil.

Established plants rarely need repotting. If container-grown plants become root-bound, repot in early spring into a slightly larger container using a well-draining potting mix.

Ensure good drainage holes to prevent waterlogging.