Encyclopaedia of Gardening 18 i 



Heuchera (heu-chera, after Professor Heucher. Ord. Saxi- 

 frageae). Heuchera sanguinea is a highly esteemed hardy plant, 

 producing close tufts of roundish leaves and long graceful sprays 

 of brilliant rosy-carmine flowers. Other colours have been got by 

 selection and crossing. The plant is a hardy herbaceous perennial, 

 and may be raised from seed or by division in spring. It is not 

 particular about soil, and does well on limestone. It enjoys a little 

 shade. Both as a border and rockery plant the Heuchera is desir- 

 able. The flowers are charming for cutting (see the Botanical 

 Magazine, t. 6929). Micrantha, with yellowish flowers, is also worth 

 growing. 



Hibbertia (hibber-tia, after Mr. G. Hibbert. Ord. Dilleniaceae). 

 Evergreen greenhouse trailers. Dentata, the yellow flowers of 

 which contrast well with the dark leaves and ruddy stems, blooms 

 in winter. Sandy loam with a third of peat suits. Propagation 

 is by cuttings in a propagating case in spring. 



Hibiscus (hibis-cus, the classical name for the Marsh Mallow. 

 Ord. Mai vaceae) .This genus includes both herbaceous and shrubby 

 plants, annuals and perennials. All are showy. The following 

 are popular: Manihot is a greenhouse rambler with yellow spotted 

 flowers (see the Botanical Magazine, tt. 1702 and 3152). Rosa- 

 sinensis is a stove rambler with rosy-crimson flowers which are 

 borne in winter. There are several varieties of this brilliant 

 species, which is shown in the Bot. Mag., t. 158. Syriacus is a 

 hardy deciduous shrub with purple flowers, and there are many 

 varieties of it; it thrives near towns (see the Bot. Mag., t. 83). 

 Propagation is by cuttings, those of the indoor species in heat, 

 those of the hardy ones in cold frames. Sandy loam, with leaf 

 soil, makes a good compost. 



Hieracium, Hawkweed (hiera-cium, from Pliny's name, given 

 because of the supposed virtues of the juice. Ord. Compositae). 

 Hardy herbaceous perennials, of which gymnocephalum, with 

 downy leaves and yellow flowers in July, is one of the best for the 

 rockery. Ordinary soil. Propagation by division. 



Hippeastrum (Amaryllis). See Bulbs. 



Hippophae, Sea Buckthorn (hippoph-ae, from hippos, a horse, and 

 phao, to kill. Ord. Elaeagnaceae) . H. rhamnoides, the Sea Buck- 

 thorn, is a dwarf hardy deciduous shrub which thrives on sand hills 

 close to the sea. It bears a crop of yellowish fruits. It may be 

 propagated by seeds, suckers, and layers. 



Hoe. One of the most useful of garden tools. The Dutch hoe 

 is good for running through the soil to loosen the surface and uproot 

 small weeds. The draw hoe, of which the swan-neck is an im- 

 proved form, is good for dealing with larger weeds when a chopping 

 action is required. The Sproughton may be used either as a push 

 or draw hoe, and is a valuable although somewhat heavy tool. The 

 Canterbury, made with 2 or 3 teeth, is good for drawing large drills 

 and for earthing Potatoes. Regular hoeing is good for crops, parti- 

 cularly in dry w r eather, because it prevents the soil cracking and 

 drying. The various forms of hoe should be of steel, mounted on 

 ash handles. 



