Encyclopaedia of Gardening 175 



mixing with other plants in a greenhouse, and may also be used 

 for rooms. With care in watering (see Watering) and ventilating a 

 room plant may be kept healthy for a long time. It is not quite 

 hardy, and should be withdrawn from a window in cold weather 

 and protected with a newspaper. Plants may be raised from seed 

 sown in soil in a frame or greenhouse in spring, pricked off, potted 

 singly, and repotted. Six-inch is a good size for the final pot. 

 Loam and peat in equal parts, with a good deal of sand, make a 

 suitable compost. G. robusta is illustrated in the Botanical Magazine, 

 t. 3184. 



Ground Ivy, Nepeta Glechoma. 



Groundsel, Senecio vulgaris. 



Guano. An excellent nitrogenous fertiliser. In addition to the 

 coarse imported product, called Peruvian, there are refined forms, 

 such as Canary. It may be used with special advantage to green 

 vegetables and Onions at the rate of 2 oz. per square yard. A thin 

 coat spread over the soil of well-rooted pot plants and watered in 

 is good. A useful liquid manure may be made by mixing half an 

 ounce in a gallon of water. 



Guelder Rose. See Viburnum. 



Guernsey Lily (Nerine sarniensis). See Bulbs and Nerine. 



Gum, Blue. See Eucalyptus. 



Gum Cistus. See Cistus ladaniferus. 



Gumming. Stone fruits, such as Plums, Peaches, and Cherriesv 

 are liable to exude gum, particularly after hard pruning while the 

 trees are leafless. Summer pruning is preferable. The branches 

 should not be allowed to grow across each other and rub. Over- 

 luxuriance should be checked by root pruning. See also Fruit. 



Gunnera (gun-nera, after J. E. Gunner. Ord. Halorageae). 

 Gunnera scabra is a hardy herbaceous perennial, with large, spread- 

 ing, hairy leaves. A healthy plant makes a fine object by the water- 

 side. It likes plenty of peat and leaf mould, with a covering of 

 litter in winter. Propagation is by division in spring. 



Gymnogramme, Gold fern, Silver fern (gymnogram-me, from 

 gymnos, naked, and gramma, writing, alluding to the spore cases. 

 Ord. Filices). These are among the most beautiful ferns for pots 

 and hanging baskets; basket culture permits of the charming 

 colours being clearly seen. Loam, peat, and leaf mould in about 

 equal parts, with sand, suit. Propagation is by spores in heat (see- 

 Ferns). They need a good deal of water, with shade from hot sun 

 in summer. Calomelanos chrysophylla, yellow; and schizophylla, 

 silvery, are the principal kinds. There are several beautiful forms 

 of both. Elegantissima, pulchella, and the crested variety of the 

 latter called Wettenhalliana are also very good. 



Gynerium, Pampas Grass (gyne-rium, from gyne, female, and! 

 erion, wool, in allusion to the woolly stigmas. Ord. Gramineae). 

 Gynerium argenteum is the noblest of grasses, throwing up long 

 silky white plumes in late summer, which remain beautiful many 



