During the year, I spend a lot of my time weeding. Each month there is another enemy to fight, another variety to beat back with the aim of giving the plants and flowers room to do their "thing"
Early June is the time for Marestail to be at it's peak.
Equisetum Arvense,(Horsetail, or Maretail) is a weed that i'm very familiar with, as my childhood garden had a lot of it. My parents didn't require my help often in the garden, but removing it was a chore every now and again when it started taking over. Maybe that was always in early June, but my memory of that garden is mostly centered on the Cherry tree that I built a treehouse in, and the Raspberry canes and apple trees I could scrump from regularly.
This weed has been round since the time of the dinosaurs, and is capable of exploiting weaknesses in concrete to push its way through to the light, so i'm afraid there is no way that you are getting rid of it completely, But, you can reduce it to the point where it doesn't bother you too much , and you can just do an annual (late May,/ June) attack to overcome it again.
1st thing to know is that the roots go very deep, so don't bother trying to dig it up, 2nd is that if pulled sharply, it will snap cleanly, at or above ground level and this often makes the plant grow back with branched growth (i.e 2 strands of weed where there was one). If hand weeding around other plants, then pull each strand of Marestail gently, so that it stretches, and breaks off below ground. This gives the longest time for a weed free border.
If you have a large patch with no other plants that you want to keep, then I would recommend either Glyphosate application at this time of year, - or the organic method of smothering it with black plastic or carpet.
This doesn't get rid of it, but will bring lots of the roots to the ground, where they can be pulled out in winter.
Never put Equesetum in the compost bin, and never rotovate ground that has Marestail in it, - this is the fastest way to get a lovely prehistoric carpet of ferny strands.