Pyrethrums are members of the chrysanthemum family, and are sometimes called the Poor Mans Chrys-anthemum. The reason for this is that they require no heat for their cultivation. They can be planted in autumn or spring, but spring planting is to be preferred in many cases.
Division of the roots should always be done in springtime as roots divided in late autumn are much more subject to damage by frost.
Pyrethrums are particularly- useful for cutting, and as the season of flower is long, they are also excollent border plants. The finely-cut foliage is an added attraction for the mixed border. The plants should be set 18 in. apart and will not require staking. The modern garden hybrids are chiefly descendants of Pyrethrum roseum, and some of the best for ordinary garden decoration are as follows:
Agnes Mary Kelivay, bright rose.
Albert Victor, crimson.
Belle of Somerset, white.
Eileen May Robinson, rich pink.
Primrose Dame, pale primrose.
Phyllis Kelvxiy, soft pink.
Langport Scarlet, carmine-red.
Lady Aster, white, tinged lilac.
DOUBLE: Queen Alexandra, pure white.
Queen Mary, pink.