Strand tangantangan, or Schleinitzia fosbergii, as it is known botanically, is a genus of tropical flowering perennial shrubs or small trees belonging to the pea family. Native to islands in the Northwest Pacific Ocean, it grows in maritime climates with significant humidity and no frost. It is hardy in USDA Zones 10 and 11 and will perform well in sandy soils with an alkaline pH. Strand tangantangan has an outward, slightly arching growth habit and requires pruning only to remove damage or to control its shape and size.
Inspect your tangantangan shrub regularly when watering to look for damaged or diseased branching. Cut off any problem foliage and branching that you see down to healthy wood or to the base of the branch at the crown.
Prune in the late summer or early fall once per year, or as needed, to control the height and spread of the shrub. Use long-blade shears or cut individual branches one by one with secateurs as your time allows. Clean up all cuttings and debris to prevent creating favorable conditions for pests and disease.
Form the shrub into a small tree with annual pruning that removes branching on the bottom 1/3 to 1/2 of the trunk. Place cuts parallel to, and flush with, the trunk without leaving a stub, and being careful not to cut into the trunk. Secateurs, loppers or a small handsaw work best with the various sizes and maturity of the branches.