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Shadyfolks wrote: I have Petasites Japonica variegata and it loves our place, I have it planted next to the creek in an area were I won't have to worry about controlling it, now.
This picture is from 2005 - it was also planted next to the creek, but in a bed with other moisture loving plants and it started taking over in just a couple of months I knew I was going to have a problem if I didn't move it soon...but three years later I am still working on getting it totally out of this bed. When I dug this out I went way beyond where I thought I need to go and then sifted through the soil with my hands to get all the roots...roots will break off and you will have twice as many plants. That first year I then sprayed Roundup probably 3-4 times, I look for babies in an 6' radius from were the original plant was and use Round up on the emerging leaves once a year. I hope in a year or two I should be finished with it :~)
I agree the dryer soil will slow it down, but then it wilts in the heat of the day.
