Sweet Autumn on metal arbor - how sturdy?
How sturdy should my arbor be to be able to hold a Sweet Autumn clematis? I'm thinking of ordering a solid metal arbor, but it's not wrought iron.
Also, do I cut Sweet Autumn back the first two years (I believe until mid July?), then let grow the rest of the season? This is what was recommended for my other type 3's for the first two growing seasons, to focus on root growth. Ideally, I'd like to be able to just let it grow.