SUMMER-FLOWERING HARDY VINES 127 
one for low trellises and fences. It quickly es- 
tablishes itself and will flower freely the second 
year from planting, but should always have a 
good, light location, as it is a quick, soft grower 
and runs up to a height of ten to twelve feet in 
a single season. It kills to the ground in severe 
winters, but in sheltered positions, or when pro- 
tected, will become woody at the base. It 
should be cut back to live wood in early spring 
and can be transplanted in spring or fall with 
impunity. 
Another good climbing knotweed for quick 
effect, flowering the second season from planting, 
is P. multiflorum. It is a heavier grower and the 
flowers are dispersed all over the plant, appearing 
from the axils of each leaf and not in a panicle 
as in the former variety. Also, it flowers one 
month later, in September. Otherwise the plants 
are similar and should have the same cultivation. 
