OCK GARDEN 

used in the crevices, soil pockets, and spaces, 
the design of the garden will bring about vary- 
ing conditions. Choose your plants with this 
in mind. Soils higher up in the rock garden 
will naturally be drier. Those lower down will 
be more moist. Shady situations will be better 
for certain plants; and a site exposed to burn- 
ing sunshine should have plants that can en- 
dure this trying condition. 
Provide Good Drainage - 
Several inches of sravel, coarse sand, or cin- 
ders placed 18 ane or so below the garden 
space will carry away the excess moisture in 
most rock gardens. Surface drainage may be 
a greater problem. Grass gutters above the 
garden, or underground tile, may be neces- — 
sary to prevent flooding of lower parts of the 
garden; otherwise, soil and plants may be 
washed out during hard rains. 
Provide Plenty of Moisture 
Plants chosen because they endure hot dry 
situations need little attention in regard to 
watering. Those that require considerable 
moisture should be soaked once or twice a 
week in dry weather. When watering by 
means of a hose, make it a long and gentle 
process so that the soil will not be eroded and 
the plants washed out. Do not water during 
the heat of the day unless the spot is shady. 
Keep Plants at Their Best . 
In thé spring, firm the soil around the roots 
of all rock plants. Fill in with new soil where- 
the earth has been washed away or heaved 
