132 HARDY PERENNIALS 
the watering as necessary during dry weather. By 
mid-September the layers should be well rooted, 
and can be severed from the parent plant. Draw 
the pegs, and carefully lift each layer with a small 
hand-fork. 
The young plants may be either bedded out 
immediately or potted for keeping in a frame through 
Winter. It is possible to strike cuttings by cutting 
square immediately below a firm joint, making a 
slit upward from the base midway between the 
sides and up to the next joint. Insert the cuttings 
in a compost of half sand and half leaf-mould, and 
place in a close frame, watering sparingly. 
The Garden Pink is a descendant of Dianthus 
plumarius. In general principles the culture of 
Pinks is akin to that of Carnations, but propagation 
is effected either by lifting old clumps and pulling 
them apart or by pipings, which are cuttings severed 
from the plant by a sharp upward pull. 
The Sweet William, progeny of D. barbatus, is 
usually treated as a biennial, seed being sown one 
season. Spring or early Summer, for flowering the 
following year. 
Several of the dwarf and trailing species, 
particularly D. deltoides, are useful edging and 
carpeting plants in addition to being superb rock 
plants. 
Dicentra. — The most useful member of this family 
is the plant known as ' The Bleeding Heart,' Dicentra 
(or Dielytra) spectabilis. Its elegant fern-like foliage 
