I too planted several Montana (and a Russian Vine oops) when I took over our small garden knowing nothing about the beasts that they become!! Oh well, you live and learn and at least you get fast screening (if like me you need it!).
I did hack a Montana down last year, again not knowing about Clematis groups etc and I was brutal. After a slightly slow start this year it is nearly 6 foot again and romping away
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I too planted several Montana (and a Russian Vine oops) when I took over our small garden knowing nothing about the beasts that they become!! Oh well, you live and learn and at least you get fast screening (if like me you need it!).
I did hack a Montana down last year, again not knowing about Clematis groups etc and I was brutal. After a slightly slow start this year it is nearly 6 foot again and romping away