84 ALPINE PLANTS. 
loam and sand. The old plants are much 
improved by cutting partially back in the 
spring; you get more flowers thereby, and 
the plant is more compact. S. ocymozdes alba 
is better grown on the north side of the 
rockery, on account of its white flowers. It there 
lasts much longer in bloom, and maintains 
the pure whiteness much longer. When I say 
the north side, care should be taken to plant 
it on a dry part of the rockery between 
stones. Give it good loam and grit mixed well 
together. This is a new plant, introduced by 
Mr. Backhouse. 
SARRACENIA PURPUREA. Very useful and 
effective for the bog or pond side. If on a 
bog the north side suits it best; if on the 
side of a pond let it have a full south position 
where the roots can just get down to the 
water's edge. The water should be partially 
drawn away in winter if possible, so that when 
the heavy rains and snow come they will not 
flood the part where it is planted. Use a com- 
post of sphagnum, peat, white sand, and a little 
charcoal—two parts peat, one sphagnum, one 
sand, with a little charcoal intermixed. Mix 
the compost well together. After the plants 
