170 
The Garden Magazine, May, 1920 
A BOUT the only insect pest that the Water-lily grower 
has to contend with is the black or green aphis. These 
often gather in great numbers on the leaves and stems that may | 
be above the surface of the water. A forceful stream of clean 
water will wash them off to be devoured by the fish in the pond. 
Sometimes a green scum forms on the surface of the water; this I 
is always in the spring and usually follows the planting or the 1 
disturbing of the soil. It usually disappears when the Lilies I 
start to make strong growth, but since it annoys it is well to 
flush the pool several times and if possible to allow it to over- 
flow. Any chemical used to destroy it is liable to harm either 1 
the fish or the plants, or both. Copper sulphate in small 
quantity will keep down the algal growth, but in doing so it 
destroys the oxygen-giving vegetation, and as a consequence I 
fish suffocate if the changed condition is radical. 
The margins of all pools or ponds should be planted with 
moisture-loving plants naturally arranged to produce a proper I 
effect. Formal planting should be avoided, except about very I 
formal pools, as the entire aim elsewhere is to copy nature as I 
closely as possible. Plant in masses or groups and do not over- 
crowd. 
F OR the help of the beginner the following selections are made 
of varieties suited for growing under certain conditions: 
For Growing in Tubs or Small Pools: Nymphaea Laydeckeri lilacea, j 
lilac; N. pygmaea, white; N. pygmaea helvola, yellow; N. Marliacea 
flammea, wine-red; N. graziella, orange-red; N. Mrs. Woodrow Wilson, 
Under the lee of such Bullrushes a small buccaneer may 
drop anchor, surely, safe too from prying eyes within 
the forest of Evonymus and Barberry! At Marie- 
mont, residence of Mrs. T. J. Emery, Newport, R. I. 
WHETHER MADE BY NATURE OR IN IMITATION OF NATURE MATTERS NOT 
Sheltered, sunny and still are these waters whence the green jade of the Arrowhead is shot at random through Pickerel-weed 
clumps, while Pond-lilies float complacently just beyond. Estate of Mr. George B. Dorr, Mt. Desert, Bar Harbor, Me. 
