Bui. 1477, U. S. Dept. of Agriculture 
Plate 12 
Growth, Spurs, and I-ruiting Habits of the Santa Rosa Plum in 
Relation to Pruning and to Soil and Other Conditions. — II 
A. — A tree which has been severely headed back each year. Shade from the dense new tops 
has caused the loss of spurs on the lower branches of the tree. (Compare with B. New- 
castle, Calif.) 
B.— A tree which has been well thinned out each year and only lightly headed back. Note 
that spurs have been retained well down on the older wood. The tree is in fertile irrigated 
soil. (Newcastle, Calif.) 
C. — An 8-year-old secondary branch of a tree which has been kept open by annual thinning 
out. Note the thrifty spurs and twigs 
