172 WHYTOCK—THE CULTIVATION OF FRUIT. 
only seen pines grown on the planted-out system at one place, 
namely Frogmore. They grow and fruit right enough, but the 
pits all opening and worked from the outside with sashes seemed 
to me wide, unhandy things to work. The pot-system in a 
neither very wide nor high pinery is the best, and where the 
pinery is an up-to-date structure pine-growing is simplicity itself. 
Scale and bug are the two insect-pests that infest pines, and 
the only way to effectually banish these is to destroy the plants 
and begin with a clean fresh stock from the suckers onwards. 
