Clematis Montana Grandiflora on an arch?
Am I being a tad optimistic putting this on a slender arch, as I know these try to grow very large?
I could possibly make another arch crossways to bear more weight...
edited April 2021
" a tad optimistic"
Montana is way too vigorous for that.
"Am I being a tad optimistic putting this on a slender arch"
Hmm. I thought so.
Can I get away with it for this spring/summer season, then move it in autumn to somewhere with more space to grow like against the front of the house?
Sheffield, Derbyshire border.
You would be better off planting it in a better place now.
There are ashtrays of emulsion,
for the fag ends of the aristocracy.
Vendée, Western France
Maybe Marble Arch would do so yes - plant it somewhere better now and plant it well - watering before, depth, soil improvement and watering and feeding afterwards. Then it can get its feet down happily and you can give it the support it needs as it grows. It will want to get to between 7 and 10 metres so train it well as it does grow.
"We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
Okay, no love for bodging it this year.
Central Norfolk UK
It won’t do anything much in its first year so there’s no point in planting it there now.
Either plant it somewhere where it can get established or grow it in in a large container until it can go in the ground.
“I am not lost, for I know where I am. But however, where I am may be lost.”
Winnie the Pooh