334 ORNAMENTAL GARDENING. 



of much moisture, liable to occur in mounds. But 

 where a rockery is made in the shade, many of the ferns 

 and wood plants are well adapted to the place. 



In building rockwork, the stones should be arranged 

 wdth a view to suffering as little displacement from freez- 

 ing in winter as possible. Those buried in the soil should 

 have a large portion of their bulk underneath the surface. 

 The ground being generally elevated in such works, and 

 therefore dry, there is less danger of displacements than 

 if it were wet. 



AQUATICS AND BOG PLANTS. 



Provided the necessary water or moisture can be sup- 

 plied, these plants in some or all of their kinds, prove in- 

 teresting in the garden. Where there are ponds, rills, 

 etc., in the grounds, very little preparation will be needed 

 to accommodate them. The aquatics may be planted in 

 the water where it is about two feet deep, by anchoring 

 their roots to a stone and allowing them to settle to the 

 bottom together. Bog plants may be set at the borders 

 of the water. If the ground is heavy along the shore, 

 some sand and peat, muck or sphagnum, should be worked 

 into it wherever plants are to be set. Sarracenias and 

 many orchids especially, are benefited by having these ma- 

 terials, if not present naturally, incorporated with the 

 soil in goodly quantity. 



But it is easy to grow any of the aquatics, even the 

 much-admired fragrant Water Lily, without having a 

 natural body of water on the grounds. Any contrivance 

 that will hold sufficient water, from a tank of masonry 

 work to a wooden tub or second-hand barrel — a molasses 

 cask sawed in two would be excellent — will answer to 

 grow them. In the famous Kew Gardens, near London, 

 there is a very successful aquarium, growing a large col- 

 lection of hardy species, and it consists of a simple brick 



