Compost or topsoil?

[Wonderfulcheapfalafel]

Looking for some advice on how to fill a newly created flowerbed.

I was planning on just dumping a load of topsoil on in a mound, but the ground underneath is heavily compacted and I just read that compost might be better in terms.of repair. However I also read that the plants I'm planning on growing like poor soil, so wonder if compost might be too fertile??? Anyone have any advice? It's a roughly 3x3m bed.

What plants are you planning on adding? I tend to chuck my spent compost over the beds as a mulch at this time of year. From the pots in the greenhouse, such as tomatoes and cucumber.

Topsoil.

If the ground below is heavily compacted, then it would be worthwhile trying to sort that out and let some air in by pushing a garden fork in as far as it will go, then wiggle it from side to side a bit. Do that all over, and that will definitely help.

Re what to fill it with, I'd say mostly topsoil with some handfuls of composted bark mixed in. If you have any old used compost from pots, then you could put some of that in too.