Real Dictionary

haulm in American English
the stalks or stems of cultivated cereal plants, beans, peas, etc., esp. after the crop has been gathered
noun: stems or stalks collectively, as of grain or of peas, beans, or hops, esp. as used for litter or thatching

haulm in British English
noun: the stems or stalks of beans, peas, potatoes, grasses, etc, collectively, as used for thatching, bedding, etc