34 Encyclopedia of Gardening 



growing districts of France, and has been found useful by Potato- 

 growers, Tomato-cultivators, and fruit-growers generally, as well as 

 viticulturists. It consists of sulphate of copper (" bluestone "), 

 lime, and water. The following are suitable proportions: 



For Fruit Trees. For Potatoes. 



8 Ib. bluestone 14 Ib. bluestone 



8 Ib. lime gj- Ib. lime 



100 gallons of water 100 gallons of water 



Fresh white stone lime is important, and as it cannot always be 

 procured when wanted, it is a good plan to make a stock solution 

 of one pound of each ingredient to a gallon of water, and keep it in 

 a closed vessel. When wanted for use the stock solution may be 

 diluted with water till brought to the strength advised above. In 

 preparing the stock solution, first dissolve the pound of bluestone in 

 half a gallon of water in a wooden vessel, then place the fresh lumps 

 of lime in half a gallon of water, and leave both for an hour. Stir 

 the two liquids, and pour them together through a piece of muslin 

 to strain out any lumps. Air-slaked lime is not suitable for making 

 Bordeaux Mixture, as it scorches the foliage of fruit trees. When 

 applying Bordeaux Mixture, use it at the very first sign of an attack, 

 employing a sprayer which will distribute it in a dew-like state. 

 For Potatoes it should be applied to the under as well as the upper 

 surface of the leaves. One application at the end of June and 

 another at the middle of July suffice. 



Border. See Flower Garden Herbaceous borders. 

 Borecole or Kale. See Kitchen Garden. 



Boronia (boro-nia, alter Signor Boroni. Ord. Rutaceae). New 

 Holland plants with wiry shoots and hair-like roots, which need 

 much care in watering to keep healthy. Given this they are suitable 

 for culture in a greenhouse, and are not only pretty, but fragrant. 

 One species, megastigma, is deliciously sweet; it has brownish 

 flowers. Elatior, with rosy flowers, is also sweet. Heterophylla, 

 with bright rose flowers, is the most showy but the least fragrant. 

 Peat and loam in equal parts, with sand, suit. Propagation is by 

 cuttings of the young shoots inserted in sandy soil under a bell-glass 

 in August. 



Bottle Brush. See Callistemon. 



Bougainvillea (bougainvill-ea, after M. Bougainville. Ord. 

 Nyctagineae) . B. glabra is a handsome plant of vigorous growth, 

 well adapted for training up the wall of a greenhouse. It blooms 

 profusely, in fact it becomes quite covered with bracts, which are 

 of a lilac-rose shade and of satiny texture. It is best planted out 

 in a border of loamy soil. After flowering it should be kept dry, 

 and in the winter the young shoots may be pruned back to the old 

 wood, and a fresh crop will appear. Blooming in autumn, the 

 Bougainvillea is a very useful plant. It may be propagated by 

 cuttings in sandy soil under a bell-glass. 



