The fruit are 50 to 130 mm long containing six to thirteen wrinkled brown seeds. They can vary in diameter from 1-20 cm. Crop Culture Apios can be grown as an annual or as a perennial. In the wild, they are found mainly in moist areas growing on brush for support, but may be grown in cultivated fields without support. It is better to grow on a trellis if seed production is desired.
Weed control is important for good yields.
No herbicides are labeled for apios, so mulch or hoeing may be necessary. Usually whole tubers are planted. The seedlings are very heterozygous, and many will not have desirable horticultural traits. Selections of the best plants may be maintained clonally by planting the tubers. Rhizobium for southern peas is satisfactory for use in apios.