This dataset contains the survival data for two biomass tree crops (PO = Hybrid Poplar; WW = willow) at the end of the growing season in the year the crop were established (2019). Each crop was treated with one of four soil amendment treatments (CT = untreated control; DG = liquid anaerobic digestate; PS = pulp-mill sludge; SE = seaweed extract). Hybrid Poplar and Willow cuttings were planted at 16,250 plants/ha. Measurement units: % of trees planted in summer still surviving in the fall.