Clematis growing conditions

Hi.

Does Clematis montana need deep soil to thrive? I had one in a raised brick bed but it never thrived.

Thanks

 

They are not normally a plant to be grown in a pot / raised bed ( depends on how big ) they get far to large the montana species . They're plenty of other varieties to look at , the viticella are the best in my opinion .

Which way is the raised bed facing ? south ? if it is that maybe the problem clematis like a cool root run the raised bed with being brick will heat up faster and your in london warm climate. Has any of the neighbours got a Montana ?

I must say I've had problems get some clematis species to establish . I thought I'd lost my little montana I was going to replace it but it holding on just

 

South facing bed. No neighbours that I can see.

 

Yes the south facing bed maybe why they aren't establishing , they say with clematis feet in the shade head in the sun ( A lot of varieties will grow in shade ) . Add on the brick bed retaining heat and extra watering required due to it being a raised bed .