Since you mentioned in your previous post that these are potted in gallon pots they must have been very small when you bought them. They are not going to be able to stay in gallon pots for long....

You should not expect huge growth this season but type IIIs are capable of growing 10' or more in a single season. After they mature.

You were right to cut them back when you potted them. You should do it again in early spring too and every early spring.
Do it around President's Day, same as roses here.

I planted 6 type III's last summer from gallon pots and they are all now about 10' tall. I cut them back when I planted. I also cut them back in Feb. I also pinched them back constantly until they started to bud in May. They are still that tall.

Thanks!

I'm really glad to hear that smaller plants might just sit there until their roots are established. I ordered Clematis Routel this spring and planted them in a pot. they grew about a foot, maybe a little more, and produced several flowers. But now they are just sitting there.

They are supposed to grow to 5 to 6 feet tall, so I imagine I need to take them out of the container and plant them in the ground. Is this correct?

Sorry to butt in violetta1976! I hope you don't mind.

Thanks,
Dee

Dee it depends on if the small plant you originally got and potted up has matured. Check to see if you can see roots coming in the bottom holes of your pot. If so, then the plant can probably go into the ground. Being in as hot a zone as you are, I might wait until later in the fall or early winter to plant them so they can get established during the cooler months in your garden. Clematis, like other plants, put on a majority of their root growth during the cooler months. In your zone, that might be in the winter months (Dec. Jan. Feb. Mar.).

Thanks so much for the information nckvilledudes! I'll wait to plant them in the fall (not by the calendar but by the temperature. Sometimes our fall doesn't start until early December.

Thanks again!
Dee

No problem Dee!!

Nckvilledudes or buyorsell, one of you told me when the best time to my clematis into bigger pots is and I forget what you said. Was it mid-fall or was it around President's Day when I prune? I don't *think* it was right away, but I could be mistaken...

Violetta, you can transplant into larger sized pots at any time since you are not really going to be disturbing the rootball much by doing so. The only limiting factor would be how many vines you have, if they are twirled around a trellis, etc.

BorS recommended pruning them around President's Day. See further above in this thread.

They aren't attached to anything yet, so I may as well do it now before they get any bigger. Thanks!

(Oh, and re: the pruning on President's Day thing - I was asking if I should repot at the same time I prune, not when to prune.)

If you prune when you repot, it will make the repotting much easier!

Thanks! They're still really small, so I doubt it'll be a problem. :0)