Allways have a few in your pocket so that when you pass by a hanging basket or window box you push one into the compost , town council displays are favourites to plant a surprise in. Great fun.
There's a house not far from us called "Two Trees" .... there's not a tree in the garden, and an expanse of grass mowed within an inch of its life with a foot-wide border to the pavement. In the summer, the border contains a single row of begonias, well spaced out. Not a thing in the winter. I find it one of the most depressing & boring gardens ...
... And every time we drive past, I mime scattering seeds & tell my husband I'm going to walk by in the dark, guerrilla gardening and chuck a load of wild flower seeds into his borders!! (Surprise!

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