Permitted fruit

At reference 1 I noticed various common ground covers which were not permitted in the newly cleared bed under the oak tree in our back garden. Some of the covers which are permitted are illustrated below.

Creeping jenny

Vigorous growth in the spring. Covered in small yellow flowers in the late spring, when it is rather flashy. A bit quieter in the summer and can be damaged by too much sun.

Stonecrop

Possibly John Creech Sedum, aka sedum spurium 'John Creech', Dragon's Blood Stonecrop and Two Row Stonecrop. But if it is I don't remember all the red flowers which are said to appear early summer. There are none now. But whatever it is, vigorous and hardy. Covers the ground and does not need a lot of attention.

Wild strawberries

In this country, a woodland plant, tolerant of shade. Berries small and edible. Not to be confused with the famous Swedish film of the same name. Some cognoscenti distinguish wild or wood strawberries (fragaria vesca) from alpine strawberries (fragaria alpina), but most garden centres don't bother. Tolerated rather than encouraged in our garden. Dies back in the winter.

Violets

Wikipedia tells me at reference 2 that there are lots of different sorts of violets, violas and pansies. But beyond it being likely that those snapped above are some kind of wild violet, no idea which kind. Tolerated rather than encouraged in our garden. Dies back in the winter.

The final decision has yet to be taken.

Reference 1: http://psmv4.blogspot.com/2020/05/forbidden-fruit.html.

Reference 2: https://en.wikipedia.org/wiki/Viola_(plant).