Bui. 334, U. S. Dept. of Agriculture. 
Plate XV. 
FiQ. 1 .—Three-Year-Old Blueberry Plant in Commercial Bearing. 
This plant is a hybrid, between two selected wild stocks, from Greenfield, N. H., and Brown 
Mills, N. J. They were hybridized in the greenhouses at Washington in the summer of 1912. 
and the hybrid seeds were sown September 9. The young plants were carried over winter 
in the greenhouse, and early in September, 1913, they were sent to Whitesbog, N. J., and 
set out in a trial field plantation. The photograph was taken July 27, 1915, when the plant 
was a little less than 3 years old. The plant is one of those shown in figure 2 (below). 
(About one-tif th natural size. ) 
Fig. 2.— Plantation of 3-Year-Old Blueberry Hybrids at Whitesbog N. J. 
These hybrids are of the same age and parentage and have received the same treatment as the 
plant shown in figure 1 (above). In the third year from the seed they produced their first 
commercial crop, valued at $37 per acre, gross receipts. The rows are 5 feet apart and the 
plants 3 feet apart in the row, too close a spacing for a permanent plantation (which should 
be 8 by 8 feet) but correspondingly more productive in the earlier years. 
