Juniperus excelsa M. Bieb has an extremely slow rate of autotrophic growth (Troup, 1921), while nothing is reported about its heterotrophic mice of growth - especially during seed germination. The present investigation was taken up or determining the rate of growth in the embryo after the germination is initiated and to establish the precise limits of heterotrophic growth in the radical, hypocotyle and cotyledons.