16 SCHOOL AND HOME GARDENS 
and sand. If the mixture is coarse, pass it through 
a quarter-inch screen. Coarse pieces of manure may be 
broken by rubbing them on the screen. 
Over the hole in the bottom of the flowerpot place 
a piece of broken pot or crockery, with the hollow side 
down; then put in at least an inch of broken stone or 
pebbles, for drainage. On this place a layer of two 
inches of well- 
rotted barnyard 
manure, which 
should be well 
broken. Then fill 
soil into the pot 
so that the bulbs 
are within one 
inch of the top 
after a half-inch 
layer of sand is 
Fig. 11. A Section of a Flowerpot containing put under them. 
Calla Bulbs 
Press down the 
soil and sand. Place the bulbs in the form of a triangle 
and press soil around them, leaving the tops barely coy- 
ered. With a garden sprinkler water the pot thoroughly 
and set it aside for roots to form. Any place im the 
schoolroom or in a storeroom will answer the purpose. 
Callas need not be in sunlight until after growth really 
begins. Give them very little water during the root- 
forming period, but gradually increase the amount as 
the buds appear. 
