Data represent the measurements realised in an open-pollination progeny experiment of European larch (Larix decidua Mill.) established in Sinaia nursery (Romania). Characters evaluated included the following: total height at the ages of 2, 3 and 4 (HT2, HT3, HT4) in centimetres; current height increment at ages 3 and 4 (h3, h4) in centimetres; root collar diameter at the ages of 3 and 4 (DRC3, DRC4) in centimetres; branch length at the ages of 3 and 4 (LB3, LB4) in centimeters; number of branches at the ages of 3 and 4 (NRB3, NRB4); and bud flushing (BB). The assessment of bud flushing (BB) was made in the spring of 2013. The bud flush (BB) survey involved recording the terminal bud using 4-index, starting from 1 = unbroken bud to 4 = needles completely open and fully elongated.

The research was carried out within the project "The passing to the second-generation seed orchards of coniferous species" financed by National Forest Administration-Romsilva.