posted 6 years ago
They do root pretty deeply. Not as bad as wisteria but can be a pain. I like the idea of removing them with wet ground, that sounds like a winner. If you don't get them all out, they come back in a year, but I have had success really degrading the base with a machete after weakening it by cutting a couple years in a row. I am gradually replacing the autumn olive with goumi as well. There are slight differences in the dormant plant, but they are very different in terms of habit as you have said. Still I have some big goumis well over 6'! These were puchased from a reputable broker, with big red berries not little autumn olive berries.
In terms of propagating them, you don't need a mister. They are super easy as hardwood cuttings. Just stick them in moist soil in the fall <12" sections and most will root if the soil doesn't dry out (I use old wood chips). I did 40 cuttings this year and am giving them away because they took so well. I did a bunch last year assuming I could transplant them and by the time I got around to it they were 4'-5' tall. I started rooting them in December and they should be ready to transplant in another month, they are already leafing out here.
Standing on the shoulders of giants. Giants with dirt under their nails