I’ve got a flower bed that measures 4m x 1.2m that is currently empty (apart from the weeds) but I’m planning on planting it in the next few weeks. I’ve cleared tons of ivy and brambles over the last few months, and I’ve heard that they can ‘kill’ the soil and suck up the nutrients - not sure how accurate this is but it made sense to me 
I’m planning on ordering compost and getting the bed ready, but I have no idea how many litres I should get or if I should get a specific type.
Any help on buying compost, or other hints and tips on getting the soil ready would be very much appreciated 