I was given a plant a while back that I was told repels mosquitoes:
The little I know about it:
- it has dark green heart shaped leaves that grow up to about 3½" wide by 4½" long (9cm by 11cm).
- the stems, ribs on the leaves and the underside of the leaves all have a reddish tinge.
- the leaves are alternate on the stems.
- it's herbaceous in Portland, Oregon (USDA zone 8a).
- it tolerates shady conditions; I have it in a half-full 10 gallon nursery pot by the northwest corner of my house where it only gets light for part of the afternoon and it seems to be doing OK.
- it spreads by underground roots which are similar to those of bindweed, though it does not seem to spread as aggressively -- a bindweed would have climbed out of the pot by now, but it's staying inside. Also, its roots seem harder to break than those of bindweed.
- it may originally have come from east Asia -- my plant is at three degrees of separation from the source, who I'm told is Korean.
- I don't know what its flowers look like.
What is this plant?