Spear Saltbush is highly drought-tolerant once established and prefers well-drained soil. Water deeply but infrequently, allowing the soil to dry out completely between waterings. Overwatering can lead to root rot.

In very hot, dry climates, occasional deep watering may be beneficial.

Pruning is typically done to shape the plant or remove dead or damaged branches. Light pruning can be performed in late winter or early spring before new growth begins.

Avoid heavy pruning, as this species responds best to minimal intervention.

Spear Saltbush can be propagated from seeds sown in spring or from semi-hardwood cuttings taken in summer. Seeds may require stratification. Cuttings should be rooted in a well-draining medium in a warm environment.

Repotting is rarely necessary for established plants as they prefer to be slightly root-bound. If repotting is needed for container-grown specimens, do so in spring before active growth, using a well-draining potting mix.