So how much compose do I need?

[Lordfrontpaw]

I’m going to repot everything on the balcony - it’s not huge but I have pots and hangers. I can order some compost online but I have no idea how big a 20l bag is exactly?

Anyone have any compost bags that they can measure for me to give me an idea if how much I need? I don’t have space to store much of I end up getting a giant sack load!

Also - and brand suggestions? Or plant suggestions if you fancy (north facing, exposed - so shady and windy!)

20 litres is pretty small. The big sacks I usually get every year are 100L.
I managed to get 2 x 20L when I was ordering essentials.

Thanks for for picture - that really helps! I’ve a couple of 60cm troughs and 6 medium plant pots, then another 2 80cm pots and some assorted small ones.