Hi John,
My view; after 20 years, the root system on your Clematis is going to be as established as it ever will be. I really don't think it will increase much more in size than what it has already. I guess it is a 'montana' type? early flowering. If so, these are in prune group 1 for Clematis i.e. they flower on growth produced the previous season and following your strategy could mean much fewer flowers. For group one plants all that is required is a light trim immediately after flowering to keep the plant controlled.
Martin
Quote:
Originally Posted by Another John
Howdy all
We have a very large old (20 years?) clematis right next to the corner
of our house. It grows across the upper half of the house frontage. The
trunk is now quite thick.
Concerned about the overall size of the plant, during the winter I
determined to take the whole lot down, and replace it. However I wimped
out after I'd got halfway - couldn't bear the thought of doing away with
it completely.
If I keep cutting the upper half of the plant down annually, so that it
doesn't grow overall in size, is it reasonable to think that the root
system will also be kept in check?
Cheers
John
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