THE LITTLE BOG GARDEN 77 



pleasing feature may be formed by the addition of a 

 little pool ; this must, of course, be made watertight, 

 and formed of well-puddled clay, or preferably concrete. 

 It ought to be in proportion to the size of the bog, and 

 for a little one a pool which would accommodate one 

 of the smallest Water Lilies, such as Nymphaea Helvola, 

 is quite sufficient. It need not be more than two or 

 three feet across. When a water supply, which can be 

 applied at will, is available, it should certainly be used. 

 It may either take the form of a little rivulet, running 

 into and losing itself in the bog, or it may be led in by 

 means of a pipe. If this is chosen the pipe should be 

 hidden. Some gardeners lead the pipe down the sides 

 or through the walls, and insert it so that the inflow will 

 enter close to the bottom, to ensure a change of water. 

 In theory this is an advantage, but in practice it presents 

 no improvement. If the water is on the surface and 

 runs into the bog directly, it is advisable to make little 

 courses, so that the water may pass all over the surface. 

 A few large stones should be placed among the compost, 

 some of them rising slightly above the surface. 



An important question in relation to the bog is that 

 of keeping down weeds and rampant-growing plants. 

 In the moist soil many weeds run riot, and there are 

 certain flowers which, if left alone, soon monopolise the 

 whole space. 



Some Bog Garden Flowers. For the large bog garden, 

 strong-growing, moisture-loving plants, such as the taller 

 Irises, Lysimachias, etc., are suitable, but they should 



