Ipomoea cairica (CONVOLVULACEAE) Mile-a-minute

Weeds to Whack

This rampantly growing perennial climber is, along with its cousin Ipomoea indica, one of our worst climbing weeds. Now cosmopolitan (found everywhere) but probably originally from tropical Africa and Asia. Like Ipomoea indica, an established, high-risk weed. Hairless stems grow with a twining habit, but can also run long distances across the ground, rooting at joints along the stem (nodes). Leaves are divided into five or seven deep lobes, like the fingers of a hand. Overall the leaf size is somewhat circular up to 10 cm. Leaves have hairless petioles to 6 cm.

Photo: Robert Whyte