Garden Pests and Diseases: NEED to get RID of this - some desperate HELP please, 1 by Eglantyne

Eglantyne wrote:
This is every gardener's nightmare .This weed has taken over part of my gardens for several years and seems like the more I pull the more they come up.

We had nothing but rain,rain,rain in the last 4 weeks +.They grow faster than I can catch up.
Was gone to Boston to help our daughter after she got out of the hospital to help with their 4 children.Came back to weeds EVERYWHERE ! :-(

I don't know the name of it but the stems are easy to pull up ,they are soft.

Please help me get rid of this pest.Thank you,
Brig