I have moved this content to a page as the sticky post was sort of annoying. Go to that page for future updates.
Things I keep thinking are human introduced but they’re actually native
To be added: Purslane, Mollugo, bedstraws, peppergrass, yellow oxalis, Euphorbia maculata, Euphorbia dentata (wild poinsettia), Melothris pendula, Cynanchum laeve (milkvine), little barley
Plants that are human introduced but not a big problem in undisturbed areas
To be added: chickweeds, henbit, deadnettle, dandelions, shepherds purse, white clover, yellow clover, crepe myrtle, Sherardia arvensis
Human-introduced species that can disrupt the local ecosystem aggressively
To be added: privet, Bermudagrass, King Ranch bluestem (aka KR grass), salsify, some brome grasses, some Poa grasses, some Palsalpum grasses, crabgrass, autumn clematis, that one aggressive sedge
Native species but no thanks
Stickers/sandburs/goatheads are native but they hurt.. They like sand. if we had a bigger land I would leave them alone outside our paths and main dog area as I’m sure something needs them. I’m not keeping them in our small space.
To be added: trumpet vine (as with the trees, I don’t have enough room), baby walnut trees, baby oak trees, sticky seed pod legumes, bidens (sometimes) and white avens (sometimes), poison ivy
Last summer I made an attempt at identifying the dayflowers (Commelina species) in our yard and the only ones I found were the invasive, human-introduced Commelina communis. However, Abby gave us some native Commelina erecta and this year we noticed some of the dayflowers had thinner leaves like on the ones she gave us. So I decided to take a look again.
It seems like for our yard, the broad vs narrow leaves are pretty indicative. So we’re going to continue pulling the broad leaved invasive ones. The Flora of North Central Texas indicates the native C. erecta has three varieties and one is narrow leaved, so the leaves probably don’t work in all regions. Once some of the dayflowers go to seed I will check to make sure they also have the smooth seeds that C. erecta has. I’m pleased to see we have more of the native species than I expected.
Even though the two species look very similar, the native species will have existing ecological and evolutionary relationships with the other plants and animals and microbes here. The human-introduced species may or may not have those. To be a good neighbor, I want to make sure our yard provides maximal food and shelter to local species, which means keeping more plants with those existing relationships.
All this to say, after keying out with the NC TX flower, I am disappointed to find my yard full of dayflowers appears to be full of the invasive, non-native version.