None of the three British localities that I know have Paulownia
specimens strikes me as particularly wet.
Paulownia seed is said to germinate "like cress", so 2,000 seeds is more
than anyone not wanting to grow a plantation (is it any good for biomass
for power generation?) needs. It doesn't display the weedy tendencies in
the UK that it is said to do elsewhere.
I haven't seen it done, but one recommended usage is to stool the plant
annually for use as a spot foliage plant.
They probably had soil though. This was a hilltop. It had the rain, it
just couldn't retain any of it.
There's a couple of Paulownia in Westonbirt, which is on my doorstep.
Those leaves are indeed spectacularly huge.
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