Water Suaeda altissima thoroughly when the top 2-3 cm of soil is dry. Avoid waterlogging, as it prefers well-drained conditions. Reduce watering significantly during winter dormancy to prevent root rot.

Consistent moisture is key during the growing season, but allow for brief dry spells.

Pruning is generally not required for Suaeda altissima. If desired for shape or to remove dead or damaged stems, prune lightly in early spring before new growth begins. Avoid heavy pruning, as it can be slow to recover.

Focus on maintaining a natural, bushy habit.

Suaeda altissima can be propagated by seeds sown in spring under glass or in a sheltered outdoor location. It can also be propagated by stem cuttings taken in late spring or early summer.

Cuttings should be placed in well-draining compost and kept moist.

Repot Suaeda altissima in spring, only when it becomes root-bound. Use a well-draining potting mix, such as a cactus or succulent mix. Choose a pot that is only slightly larger than the current one.

Water sparingly after repotting to encourage new root growth.