155 



HELIANTHEMUM. 



roots into it, rarely flowers, and its 

 leaf is deeply cut ; but the tree Ivj', 

 or flowering part, rears itself on high, 

 so as to be fully exposed to the light 

 and ail" and the leaves become of an 

 oval shape. H. Canariensls, the 

 giant, or Irish Ivj, as it is sometimes 

 called, though it is a native of the 

 Canaries, is hardier and grows much 

 faster than the common kind ; but 

 the variegated kinds are more tender, 

 and grow much slower. Ivy requires 

 a deep and somewhat light soil, into 

 which its roots can penetrate easily ; 

 and when grown for any purpose in 

 pots or boxes, it should be abundantly 

 supplied with water. Ivy is useful 

 in all cases where a naked space is to 

 becovered with green in a short space 

 of time ; and it is particularly valuable 

 in town gardens, as it will bear the 

 smoke and want of pure air in cities 

 better than most other plants. It 

 should, however, in all close and 

 crowded situations, be abundantly 

 supplied with water, and occasionally 

 syringed over the leaves. The gold 

 and silver varieties are ^ery beau- 

 tiful, especially the former, when 

 grown against the chimney of a 

 dwelling-house or hothouse ; but 

 they require warmth to make them 

 thrive. 



Hedgehogs. — Medicdgominivia. 

 — An annual plant, with small yellow 

 pea-flowers, and curiously shaped 

 capsules, which resemble hedgehogs. 

 The plant is weedy-looking, and not 

 worth growing. 



Hedge Mustard. — See Ert'si- 



MUM. 



Hedge Nettle. — See Sta'chys. 



Hedges for flower-gardens should 

 be composed of ornamental plants, 

 such as Cydonia Jaxjonica, Privet, 

 Laurustinus, Rihes sanguineum, 

 Roses, and double-blossomed Fiirze, 

 or Ivy and other climbers, trained 

 over iron trellis-work. The hedge 

 to a flower-garden should never be 



stiff and formal, so as to look like a 

 mere barrier ; but it should be so 

 arranged, and should consist of plants 

 Avhich harmonise so well with the 

 flowers in the garden, as to make 

 them appear a part of it. For further 

 details on this subject, see Fences. 



Hedy'chium. — Scitaminece. — 

 Garland-flower. — Large reed-looking 

 plants -nith splendid flowers, but 

 which are only suitable for large 

 places, as they require the heat of a 

 I stove, and a great deal of room, to 

 make them flower well. They are 

 natives of the East Indies. H. 

 corondrium, which is one of the 

 commonest kinds, has large white 

 flowers, which are exceedingly fra- 

 gi'ant. All the kinds require a light 

 rich soil, and are increased by divi- 

 ding the roots. 



Hedt'sakum. — Leguminosce. — 

 The French Honeysuckle. — The 

 species are mostly hardy biennials 

 and perennials, which require only 

 th e u sual treatment of their respective 

 kinds. They will grow well in any 

 rich light soil, and they are increased 

 by divisionof their roots and by seeds. 



Hele'nium. — CompositcE. — The 

 species are generally tall-growing 

 jDcrennial plants, with large yellow 

 flowers. They are increased by di- 

 viding the root. There are two or 

 three annual species which are quite 

 hardy, and onlyrequire sowing in the 

 open border. The handsomest of 

 these is H. quadridentdtum, which 

 has bright orange-colouxed flowers, 

 like a Eudbeckia. 



Helia'xthemum. — Cidtdcece. — 

 The Sun-rose. — Low shrubs, gene- 

 rally used for planting on rock-work, 

 and strongly resembling the Cistus 

 or Rock -rose. As most of the species 

 are rather tender, they req uire protec- 

 tion during winter. For this reason, 

 they are either grown in pots, which 

 are placed upon rock-work among 

 the stones ; or taken up and repotted 



