Help with my sickly Clematis

[amandaandherveg]

I bought 2 clematis avalanche a few months ago, planted up in large containers against a wall and began training them over a wooden trellis.

They were growing away happily until a couple of weeks ago (after extended rainfall and very chilly days) when I noticed that the containers were waterlogged (I'd forgotten to put drainage holes in them). After putting holes in them they drained off and I added a little fresh MCP. Today I noticed one of them is looking droopy with many of the newer shoots and bottom foliage limp, floppy and lacking in colour.

I'm guessing that this may be a result of the poor plant having sat in cold water for days - is there anything I can do to perk it up, I'd hate to lose it through my stupidity.

[Glutton4...]

Tip it out of the pot, to make sure the root-ball is not still waterlogged. Then re-plant in the ground, and cover the top of the root-ball with large stones. Feet in the shade, head in the sun, is the general rule for Clematis. In my experience they never thrive in a container, but I fully expect someone else will soon come in and prove me wrong!

[Tam]

Glutton is absolutely correct. I feel sorry for most plants I see in containers, but a clematis needs a cool root run. There is one outside our local library in a large plastic container and it is slowly dying, poor thing.

[Two_Sheds]

... you also might have vine weevil larvae in the containers, chewing through the roots