What weed is this? My lawn has tons of them all over. How do I get rid of it?
UPDATED with more photos:
What weed is this? My lawn has tons of them all over. How do I get rid of it?
UPDATED with more photos:
It is a weed. I think it is a sort of Potentilla, a very difficult genus to determine, often with stolons. I do not know American flora, so maybe it could be an other Rosaceae (member of Rose family). Leaves do not seems to be of Ranunculaceae (family of Ranunculus), but Ranunculaceae is a so diverse family, with flowers and leaves of all kinds.
But on Rosaceae there are many plants with similar leaves (Geum, Fragaria [Strawberries], etc.), so without flower and more details on stolons, leaves, stalk, etc. it is very difficult to give a definitive answer.
Take a look at Potentilla reptans (creeping cinquefoil). It's a non-native but has been found in Massachusetts. See https://gobotany.newenglandwild.org/species/potentilla/reptans/.
My 2 cents is on Virginia Creeper, a common weed on the ground and in trees and anything else it can climb. I have a very rustic yard so I only cut big ones from trees and house and occasionally pull them from the ground ( East TX rainforrest). I have read that birds like the seeds. A young one can look like poison ivy which is one reason I don't pull them all.
It's not familiar for me, what kind of plant it is. But I have the following steps in removing such plants from my lawn.
first answer these:
These type of plants suddenly taking over can be the result of wind spreading their seeds or it is simply a fast growing one that can start reproducing in a few weeks.
first find the weakness
If it's a plant that relies on big leaves (like yours here) mowing deep plus less watering will destroy the leaves and destroy the plant over time. Just do it several times, never letting the plant to grow any leaf and in a month it will be gone then replace any damaged grass if needed. Remember that grass is a tough plant and will survive this easily.
But if it's not that dependent on the leaves and is spreading on the ground instead of getting tall with no big leaves, you have no option of removing the grass and plant together and start fresh. (luckily it's not the option here). You need to be careful not to spread any seed or part of the unwanted weed during the process.
then destroy the cause
You need to find and destroy nearby fully grown ones that are spreading seeds. If It's happening for the neighbors too you need to talk to them to mow regularly and not let the weed to get to the reproduction phase.
This looks like Raununculus repens, the creeping buttercup. I live in the UK and we have a different variety than the US.
If it is, they have rhyzomes which enabled them to regenerate constantly.
To control, you need to dig as much of the plant without breaking it. Any breakage will sprout a new plant. This weed loves wet damp compacted ground so airing the lawn with a fork will help drainage.
I live in the UK so can’t advise you on chemical control.