The cotyledonal leaves of kenaf have an irregular rounded shape tending to square off at the edges with a recess at the apex, along the central rib almost forming the top portion of a sketch of a heart.

They are pale green in colour and at maturity their dimensions vary from 2.8 to 3.5 cm in width and from 1.8 to 2.2 cm in length.

After the cotyledonal leaves, the plant develops real leaves that are always whole even if the plant belongs to a variety with septate leaves.

The cotyledonal leaves of kenaf are easy to distinguish from those of hemp by their shape and size. At maturity, their dimensions are always greater than those of the cotyledonal leaves of hemp. Kenaf leaves, too, like hemp leaves, have no stipules.