TO THE FLOWER GARDEN. 151 



^HYPERICUM. St. John's Wort. [HypericacecB.] A 

 large genus, coutaiuiug many hardy species, both perennial 

 herbs and shrubs, as well as some greenhouse and frame 

 species. The hardy perennials and shrubs all grow readily 

 in common sandy soil, and are increased, the former by 

 division, the latter by layers. H. calycinum is a dwarf hardy 

 showy species, which grows freely under the shade of trees. 

 The greenhouse shrubs grow in sandy peat and loam, and 

 propagate freely by cuttings. Yellow is almost universally 

 the colour of the flowers in this genus, although there are 

 numerous varieties. 



HYPOCALY^MMA. [Myrtacese.] Greenhouse evergreen 

 slii'ubs. Soil, peat, loam, and sand. Increased by cuttings 

 in sand under a bell-glass. 



HYPOCALYPTUS. [Leguminos®, § Papilionaceae.] 

 Greenhouse evergreen shrub. Soil, peat, loam, and sand. 

 Increased by cuttings in sand under a glass. 



HY^POXIS. [Hypoxidaceae.] Greenhouse herbaceous 

 perennials for the most part. They are remarkably showy 

 plants when the sun is on them, but the flowers ch)se in dull 

 weather. Soil, sandy peat, with one-third loam. Increased 

 by division. 



IBERIS. Candytuft. [Cruciferas.] A genus containing 

 some well-known hardy annual and a few greenhouse and 

 hardy sub-shrubs. The annuals are showy and useful border 

 plants, perfectly hardy, growing in any kind of soil, and 

 requiring only to be sown where they are to flower. In the 

 borders they will sometimes shed their seed, and the plants come 

 up in autumn, and stand the winter if it be not too severe. 

 Candytuft makes a good clump plant for a geometrical 

 garden, because it does not grow higher than six or nine 

 inches, and forms a complete mass of iiowers in its season, 

 being literally covered with bloom. The natural blooming 

 season may be prolonged by sowing some in puts as early as 

 February, thinning them as they come up, and nursing them 

 in the greenhouse or frames till ^lay, when they will be 

 almost in flower. The seed sown in the borders will be a 

 month or six weeks later before it fiow(^'s, and a later sowing 

 towards the end of May will carry on the succession. The 

 sub-shrubby evergTeen species thrive in light soil, and the 



