Where to plant an aster?

[seeyouinanotherlifewhenwearebothcats]

Hi all, I bought an aster ‘Jenny’ last week and am trying to figure out where to plant it. I have a bed with hellebores and heathers and I did put an Erigeron in there for summer colour and it’s happy. I was going to maybe put the aster down the other end near a heather Erica. Is it all too autumn/winter? I am still getting to grips with garden and trying to have interest for each season but apart from one bed I seem to just have a whole lot of green at the moment.

Should add that the proposed bed gets plenty of sun!