72 ROCK AND WATER GARDENS 



(Canadian Lily), which should be grown in bold clumps 

 to show its clusters of golden-red flowers to best advan- 

 tage. All these North American Lilies revel in cool, 

 moist soils, and in their native haunts are found, glow- 

 ing masses of colour, in swampy regions. As a ground 

 work for the Liliums, good use might be made of the 

 White Wood Lily (Trillium grandiflorum), which covers 

 the ground with a carpet of rich green foliage, studded 

 with snow-white, three-petalled blossoms. Apart from 

 its own beauty, it serves as a protection to the Liliums 

 during the early months of the year. 



Skirting the rough pathway, irregular drifts of the 

 Indian Primrose (P. sikkimensis) might be planted. In 

 May, and onwards for several weeks, the sheets of 

 yellow blossoms would make a beautiful picture between 

 the moss-grown stones. These Asiatic Primroses, which 

 come to us from the wet mountain slopes of the Himal- 

 ayas, are seen at their best in the bog garden. P. denti- 

 culata would prove equally at home, spreading its tufts 

 of leaves and large clusters of lilac flowers in the spring 

 sunshine. P. japonica grows rampantly in moist spots, 

 and bears no resemblance to the same plant struggling 

 for existence in a dry garden border. P. rosea, small 

 but charming, and P. capitata, with flowers of a wonder- 

 ful purple shade powdered with white, would occupy 

 the sides of slight knolls. A corner must also be found 

 for the Bird's Eye Primrose (P. farinosa) bearing its 

 dainty lilac blossoms above rosettes of silvery leaves. 

 In a sheltered corner near a few rough stones it is 

 delightful. 



Now that we are approaching the pools and softest 

 ground, Osmunda will form a fitting background to the 

 many small bog plants that we must take care to include. 

 This noble fern will attain a height of six feet or more, 

 when its roots can spread freely in moist, porous soil. 

 Spleenwort (Asplenium), Nephrodium, and the North 



