The experiment was conducted to ascertain narrow-sense heritability (h 2) and the family-within-provenance variation in shoot die-back, taproot length and root biomass of half-sib Pterocarpus angolensis families from Malawi, Namibia and Zambia. Keywords: half-sib families, narrow-sense heritability, phenotypic correlation, Pterocarpus angolensis, root biomass, shoot die-back, taproot extensibility.