Pyrethrum

Pyrethrum - Vigorous perennial or rock-plants, by far the most important of which is the Caucasian P. roseum, which has yielded the innumerable varieties, both single and double, that have now become such popular border flowers. They are showy, hardy, and easy to grow, little affected by sun or rain, and valuable as cut flowers. The blossoms are continually becoming more varied in color and more refined in shape. Though Pyrethrums are in their fullest beauty in June, they are seldom altogether flowerless throughout the summer; and a succession can easily be kept up by judicious stopping and thinning. They are valuable for autumn decoration, for it cut down after flowering in June, they flower again in autumn. Division, March or April and in July after flowering. Seed. Take the plants up, shake off all soil, pull them to pieces, put them in small pots, and place them in a cold frame for a few weeks until established, but not too close, as they are apt to damp. When established, they may be planted out. A good rich loam suits them best, though they will grow and flower freely in any good garden soil, and the more we incorporate wellrotted manure with the soil the better they grow and flower. Mulching, especially in dry soil, keeps the ground moist and cool. The varieties are so numerous that it is difficult to make a selection, and as they vary from year to year it is best to take them from the catalogues of the day.

Feverfew (Pyrethrum Parthenium) - The golden-leaved variety of this plant (P. aureum or Golden Feather) is now common. Of this there are several forms. One is called laciniatum, and is very distinct from the older kind. These have their uses in geometrical borders, where they have a bright effect. Their culture is of the simplest. Seed is sown in heat in spring, and the seedlings are pricked off in pans, and when large enough transferred to open borders, and there they withstand the winter unprotected. New plants should be raised every year, as after flowering the second year the old plants lose their neat compact growth.

Turfing Daisy (Pyrethrum Tchichatchewi) - A Caucasian plant, retaining its verdure in dry weather on dry banks or slopes where few plants would nourish; a dwarf creeper, quickly forming a carpet of green. The flowers have white rays and a yellow disc, and in forming turf of the plant in poor dry soils they should be removed, though for the rock garden of the rougher kind or for borders the flowers have some claim to beauty.

Hungarian Daisy (Pyrethrum Uliginosum) - One of the finest of tall herbaceous plants, and forms tufts 5 to 7 feet in height. These are crowned by lax clusters of pure white flowers, each about twice the size of an Ox-eye Daisy. It is excellent for cutting, and its blossoms are produced late in autumn before the Chrysanthemums come in. It is a stately plant for a rich border, and thrives best in deep, moist, loamy soil. It may be naturalised in damp places. Division. Syn., P. serotinum. Hungary.

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