Gardening for Amateurs 



609 



and are increased by seeds, division or 

 cuttings. Gypsophila cerastioides is less than 

 6 inches high and bears white flowers from 

 June to August. Other fine sorts are 

 prostrata, 6 inches, white, May and June ; 

 repens, 6 inches, white, and its variety 

 rosea, June to 

 August ; Sunder- 

 manni, 6 inches, 

 pink, May to 

 July. 



Helianthe- 

 m u m (Sun 

 Rose) . Sun 

 Roses are showy 

 little shrubs with 

 brilliant flowers 

 and flourish best 

 on a sunny rock- 

 ery. There are 

 many named 

 varieties of Heli- 

 anthemum vul- 

 gare (the common 

 Sun Rose) which 

 are propagated 

 by cuttings, but 

 a packet of seeds 

 gives an excellent 

 range of colours. 

 They bloom freely for weeks from July 

 onwards. 



Helichrysum (Everlasting). Fresh in- 

 terest has been given to the Helichrysums by 

 the introduction of H. beUidioides, a pretty 

 hardy alpine with small Daisy-like flowers. 

 It should be grow T n in the moraine or on a 

 dry, well-drained rockery. The best sorts 

 are : beUidioides, 4 inches, white, May to 

 July ; frigidum, white, 3 inches, June and 

 July ; lanatum, 6 inches, yellow, June and 

 July ; and rupestre, 6 inches, yellow, June 

 and July. 



Houstonia. Dainty low-growing plants, 

 preferring a moist peaty soil in partial shade. 

 They have small leaves and beautiful little 

 blue or white flowers. Propagation is by 

 division or seeds. Good kinds are : coerulea, 

 3 inches, pale blue, May to July ; purpurea. 

 9 inches, lilac, May to July ; serpyllifolia, 

 3 inches, pale blue, May to July. 



Hypericum (St. John's Wort). St. 

 John's Worts give us a number of excellent 

 39 



rockery flowers, and are generally grown in 

 sandy loam, in sun or partial shade. They 

 are easily propagated by seeds, division and 

 cuttings. The undermentioned are good : 

 Coris, 6 inches, yellow, May to August ; 

 fragile, 6 inches, yellow, June to September ; 



A beautiful little Everlasting flower (Helichrysum beUidioides) 



nummularium, 9 inches, yellow, May to 

 August ; repens, 6 inches, yellow, June to 

 September ; reptans, 6 inches, yellow, June 

 to September. 



Iberis (Evergreen Candytuft). The 

 white-blossomed Evergreen Candytufts make 

 a charming display in spring and are quite 

 indispensable in the rock garden. They 

 grow freely in ordinary soil in sun or slight 

 shade. An increase of stock is obtained by 

 seeds, cuttings, or by division of the old 

 plants. I. gibraltarica, 12 inches, lilac, is 

 tender in many places, but the others, which 

 have white flowers, are hardy. The best are : 

 correaefolia, 12 inches, May to July ; saxa- 

 tilis, 6 inches, April and May ; sempervirens, 

 9 inches. Little Gem is a compact low- 

 growing variety, 6 or 8 inches high. 



Leontopodium (Edelweiss). The Edel- 

 weiss (Leontopodium alpinum) is not nearly 

 so difficult to grow as amateurs appear to 

 think. All it needs is sandy or stony loam 

 among rocks. It is best protected by glass 



