Encyclopaedia of Gardening 179 



Yew (which is poisonous to animals) , Sweet Brier (see Brier) , Horn- 

 beam, Beech, Laurel, Box, and Holly may be mentioned. Yew- 

 hedges are very appropriate for formal gardens, and may be clipped 

 into shape as desired, but they grow slowly. 



Helenium (hele-nium, after Helen of Troy. Ord. Compositae). 

 Hardy perennials, with showy flowers in late summer. Pumilum 

 is the most popular ; it has yellow flowers on stems about a foot high. 

 In the variety striatum the flowers are striped with red. Grandi- 

 florum has large flowers. All these are varieties of autumnale, for 

 which see the Botanical Magazine, t. 2994. For culture, see Flower 

 Garden Herbaceous plants. 



Helianthemum, Sun Rose (helian-themum, from helios, the sun, 

 and anthemon, flower. Ord. Cistineae). Brilliant plants for the 

 rock garden, where they will thrive in light, sandy soil in sunny 

 spots, and make a bright display in early summer. They may be 

 raised from seed or propagated by cuttings in a frame. The common 

 species is vulgare, a yellow-flowered trailer, but many flower lovers 

 prefer to select a few good named forms for their rockeries, such as 

 Fireball, Golden Queen, Innocence, Primrose Dame, Jubilee, 

 Garibaldi, and Pink Beauty. There are many colours to choose 

 from. 



Helianthus, Sunflower (helian-thus, from helios, sun, and anthos, 

 a flower; so called because the flowers are believed to follow the 

 sun round. Ord. Compositae). The Sun- 

 flowers, annual and perennial, are among the 

 most popular of hardy herbaceous plants, 

 and should always be planted in large borders 

 to give a display when most of the summer 

 flowers are over. The species vary a great 

 deal in height, some being no more than 3 or 

 4 ft., while others rise to 8 or 10 ft. They 

 make their finest growth in a moist, fertile 

 soil. The perennials are easily propagated 

 by division from autumn to spring, and the 

 annuals by seed (see Flower Garden and 

 Annuals). Of the annuals, cucumerifolius, 

 New Miniature, Munstead Primrose, and 

 Stella are good. Multiflorus maximus is a 

 fine single perennial form, and flore pleno a 

 splendid double. All the foregoing grow 

 about 4 ft. high. Rigidus Miss Mellish is 

 also a good plant. 



Helichrysum (Everlasting). See Annuals. 



Heliotrope, Heliotropium (heliotro-pmm, 

 from helios, sun, and trope, twining, in allu- 

 sion to the twining shoots. Ord. Boragineae). 

 One of the most richly perfumed of all 

 flowers, and if not brilliant yet pretty 

 and pleasing. It may be grown in pots, and if pinched can be 

 kept fairly compact and suitable for a small house. On the other 



PROPAGATING HELIOTROPE 

 BY CUTTINGS. 



. Growing tip. 2. Point of 

 severance. 3. Leaves ta 

 be removed. 4. Depth of 

 insertion. 



