I’m hoping to plant a clematis in a very large terracotta pot.Should I only useJohn Innes 3 or mix with multi purpose compost. All advice gratefully received, have been mulling over this since the weekend and must plant today😊
I would mix in (and recommend using peat free compost wherever you can), I would go with a fifty / fifty mix personally. Or at least one third multipurpose compost, it just helps with moisture retention and nutrients.
I would personally use top soil (without peat) and peat free compost for my mix.
I agree a mix is best