PROPAGATION OF WILD-DUCK FOODS. 
27 
wet soil, but the tubers are not available for duck food in such places 
unless overflowed in fall and winter. 
The tubers of this plant are known to retain their vitality when 
dried, but more uniform success will probably result if drying is not 
Fig. 25. — Wapato tubers. (About two-thirds natural size.] 
carried to an extreme. Tubers should be shipped promptly after 
gathering, in well-ventilated packages, and should be planted imme- 
diately upon receipt. The wapato is suitable for cultivation in prac- 
tically all parts of the United States. 
