French tamarisk is highly drought-tolerant once established, preferring well-drained soil. Water moderately during the first year to establish the root system.

After establishment, it rarely requires supplemental watering, even in dry conditions, making it ideal for xeriscaping.

Prune French tamarisk in late winter or early spring before new growth emerges to maintain shape and size. Remove dead, damaged, or crossing branches.

Hard pruning can rejuvenate older plants and encourage more vigorous flowering on new wood.

Propagation is easily achieved through semi-hardwood cuttings taken in mid-summer. Dip cuttings in rooting hormone and plant in a well-draining medium.

Alternatively, seeds can be sown in spring, but cuttings generally yield more true-to-type plants.

Repotting is rarely necessary for Tamarix gallica as it prefers to be slightly root-bound and thrives in a wide range of soil conditions. If container-grown plants become excessively large, repot in spring into a slightly larger container with well-draining soil.