Sympodium brasiliensis Propagation Guide

Propagating the encrusting soft coral Sympodium by dividing its spreading mat across rock, with notes on its Xenia kinship and slow, non-pulsing growth.

Overview

Sympodium is an encrusting soft coral in the family Xeniidae, the soft corals of the order Malacalcyonacea. It is related to Xenia but does not pulse and has much smaller polyps, with feathered tentacles on individual branching stalks. It is a very tolerant but slow-growing coral that encrusts and spreads across rock surfaces.

Reproductive Mode

Sympodium spreads vegetatively as its encrusting base advances over rock, so propagation is asexual and based on dividing the spreading colony.

Fragging / Asexual Propagation

Because the coral encrusts and spreads as it grows, a frag is obtained by cutting through the encrusting base or by placing nearby rock or plugs so the colony grows onto them and can later be separated. New pieces are then secured where they have ample room to expand.

Conditions for Propagation

Sympodium is primarily photosynthetic and generally does not need supplemental feeding, though it will accept small filter foods. It is extremely adaptive to lighting and tolerates a range of flow, so frags establish under conditions matching the water parameters recorded for this species in the knowledge base.

Common Challenges

The main limitation is its slow growth, which keeps the species relatively rare and means fragmented colonies take time to fill in. Stalks are more brittle than they appear, so cuttings should be handled gently. As a non-aggressive coral, it should be given room away from faster spreaders.