What is the collective noun for a group of dandelions?   A drift or adrift in my garden!

With so many potential ‘clocks’ ticking away to dispersal I wonder at the number of flowers on this fine weed. (Dandelion makes a wine but I am not so sure that it is quite so ‘fine’.)

Bindweed can be deceptively attractive except when flowering in my garden. I would call their group noun a ‘knot’ or a pestilence of convolvulous. Heaven forbid that they should become a congregation!