I saw this in the ground at a nursery earlier this year, and it was definitely running. I'd put it in a container if you just have to have it. Sue

I've tried it twice, both times within feet of where the invasive stuff had been growing for years. It was so well behaved for me that it never did take off, and I lost it both times.

I have kept mine for about 10 years. I simply treated them like I treat mint: plant them in 5 gal pots I picked up in a dumpster behind the nursery. That way it has room to expand, but it can never get away from me. I have 2 and have moved them about the garden several times---another advantage of having it in a large pot.

I had a third one. It escaped from the cage. I yanked it.

Try the pots. 2 out of three fallopia agree.

I love it when old posts surface again. I had this fallopia in a damp-ish well amended bed and it went crazy - runners everywhere and it attracted Japanese beetles by the hundreds - they just dripped off it. I finally took it out even tho I really liked the plant and found one runner that was about an inch in diameter -serious roots running for maybe 6 ft. I'd stick to a variegated dogwood or something like that myself

I'd like to plant my newly purchased fallopia japonica variegata in a 5 gallon pot as suggested by philipW2 but the question is: should there be drainage holes in the pot? or will the runners "escape"

I've had mine in the garden going on 3 years, and last Fall was the first time I've noticed any runners. There were just a couple of sprouts that came up, and were easily controlled.

I have had Fallopia japonica in my shade/part shade shrub borders for 6 or 7 years now in NY state and they really light up the shade. NO problems at all with unwanted spreading. They are in a border in front of some tall, good-sized viburnums, and with a few hostas and ferns scattered in front. I am a big fan of these plants and their ability to brighten up the shrub border. The only care I give them is to cut the tops off of any tall gangly shoots in late spring, which results in desired lower branching; and cut them to the ground in the late fall.

I've been growing this for about 6 years now in shade in middle TN. I love it and it has been slow growing for me. Has basically stayed in a clump with very little spread but I still keep an eye out. Has anyone had reseeding? Mine is blooming like crazy right now.

looking for the Varigated knottweed, was it Varigate?

Yes, mine is variegated - variegated Japanese Knotweed. Reads as white with green.

Would you be willing to sell a rhizome off it? Looking for that hard to get Knottweed color variety up here in Wisconsin.

In the spring, yes. Right now we have had below 0 temps and totally frozen ground. I have a photo but for some reason I can’t get to it to post in Houzz - only let’s me get to a small part of my recent photos to select....? The nursery where I used to purchase said last year that they can no longer get them, either. They suggested dividing, also. I just looked on-line but can’t find anyone selling. Also I planted some in my son’s yard and they are looking to move, so I was thinking of digging them up down there, also. How can I contact you? Can you text me at 518-522-3320 with an email?

A friend of mine has this in her garden and i absolutely love the look of it. She said that it has taken years for hers to get to any significant size and split a section off for me ( i am starting a new garden). I planted it in a large pot in the ground last fall (2020). It died back about a month later but i expect as much as I am in southern Ontario. Most of my other plants are showing signs of growth now and the Fallopian Japonica Variegate is showing no signs of life. Please - is this a later starter in the spring or do you think i may have lost it?

The first sign is little red “nubbins”, then red leaves close to the ground. I live in the Capital Region in NY state. Zone 5. Spring has come early here this year - as much as 2 weeks early. It was just at the end of last week that I saw the first red nubbins. Then we had much needed rain and now a little red leaf close to the ground is showing. Forsythia is in full bloom here, and almost all of my perennials were up and green and growing before the red nubbins appeared for the fallopia japonica variegata. You are in Ontario, so give it another week or two.

Thank you Chloe00s! I will continue to hope watch.