154 SCHOOL AND HOME GARDENS 
the desired height and trimmed to form a round head. 
Hydrangea hortensis is commonly used in tubs or pots 
for piazza and garden decoration. Its foliage is heavy 
dark green, and the blossoms change from creamy white 
Fie. 79. Hydrangea hortensis 
to rose color and sometimes blue. Keep these plants in 
the cellar during the winter, and give them just water 
enough to keep them from shrinking. Trim back in the 
spring to cause new blooming shoots to form. 
