Is this a weed or a hibiscus plant
The foliage looks similar to hibiscus leaves but it seems to have too many stems (or I am not used to seeing that many in such as small area). The leaves are a tad more yellowish than typical hibiscus leaves. Hard to say with 100% certainty... maybe a weed? See if the weed or plant blooms (hibiscus may not bloom as quickly as some weeds do).