Wasp Going Into Grass

[annieigma]

I have been watching an insect that looks like a wasp, going into the grass, then a few minutes later it flies out, gone for a few minutes, then back again into the same place, and repeats all the time ( near my garden hammock) I tried googling it, but nothing much, mostly American stuff, different wasps, i think. any ideas please. Am I going to get a plague of wasps??

[237SJ]

http://www.rentokil.co.uk/blog/mining-bees/

[roopower]

I think solitary bees, like Mason bees, make a nest for a single egg in the grass, perhaps there are solitary wasps that do the same thing.