Technically, what I have in my garden that is such a powerful weed constantly popping up everywhere, is the Galinsoga parviflora, that sh...Read Moreould be the less hairy variety of what I think should be the same species, being Gallinsoga parviflora hispida = G. ciliata. This Hairy Quickweed has some hair on top of the leaves while my Smooth Quickweeds do not. No real difference. Both varieties are from tropical South America and are very invasive and aggressive. Easy to pull out of the ground which kills them off. However, this annual seeds quickly and abundantly.
Technically, what I have in my garden that is such a powerful weed constantly popping up everywhere, is the Galinsoga parviflora, that sh...Read More