The "French Honeysuckle" (Hedysarum Coronarium)

The "French Honeysuckle" (Hedysarum Coronarium), with red flowers, growing about two feet high, and its white variety, Album, are useful plants.

The Helianthemums

The Helianthemums, or Sun Roses, are useful for the rockery, and come readily enough from seed.

One or two useful Sunflowers (Helianthus) are perennials, notably Orgyalis, the "Willow-leaved Sunflower," which has slender, drooping leaves; and Rigidus (Harpalium Rigidum), a much dwarfer plant.

The Sweet Rockets Or Dame's Violets (Hesperis)

The Sweet Rockets Or Dame's Violets (Hesperis) are old favourites, which flower freely, and have a strong violet perfume. The type Matronalis is purple, and there are lilac and white varieties, also dwarf white and violet forms.

The Heucheras

The Heucheras are amongst the most brilliant and graceful of hardy perennials. The bright flowers are borne on spikes about two feet high. The best known species is Sanguinea, coral coloured, and there are white and rose varieties of it. Every flower lover should grow some of the Heucheras in the border or on the rockery.

The Yellow Hawkweed (Hieracium Villosum)

The Yellow Hawkweed (Hieracium Villosum), with its hoary leaves, is a useful plant for borders and rock-work. The blend of colour in leaf and bloom is very uncommon.

Hollyhocks

Hollyhocks, as we saw in an earlier chapter, may be sown under glass in winter for blooming in the garden the same year, but those who have not the convenience for this, or prefer to treat their old favourites as absolutely hardy plants, may sow out of doors in June, and transplant in autumn for flowering the following year. One can buy single mixed and double mixed, or separate colours of double, such as scarlet, crimson, carmine, rose, pink, violet, yellow, and white. The fringed, or Alleghany, Hollyhocks are an interesting and beautiful type. There can be no doubt that seedling Hollyhocks, grown under natural conditions in the garden from seeds, are less liable to be attacked by the fungus which has caused so much injury in the past than plants from cuttings.

A pretty pale blue North American Alpine of very low growth, and suitable for moist, peaty ledges in the rock garden, is Houstonia caerulea. It is a dainty little floral gem, and comes readily from seed.

The Perennial Candytufts (Iberis)

The Perennial Candytufts (Iberis) are pretty, free-flowering plants, suitable for covering large stones in the rock garden, and for patches in the border. Sem-pervirens, the white evergreen Candytuft, comes freely from seeds.

The Incarvilleas

The Incarvilleas can also be grown from seed. Dela-vayi and Grandiflora have been mentioned in a previous chapter. The large, trumpet-like flowers are most brilliant in colour, and the foliage is handsome. Variabilis, rosy purple, is also a good species.