I have a tetrapanax papyrifera rex that I put in the yard about 5 years ago. It took a few years for it to gain height and establish itself, but it eventually got up to about 7 feet tall, with one tree trunk. However, last winter the extended snow left from the holiday snow/ice storm seemed to kill it. I had no new growth this past spring and when I scraped the bark, I couldn't see any green or signs of life. So, by early June, I chopped it down (see stump in pic attached).

Here we are a month later, and I have tetrapanax starts springing up everywhere! I have an entire grove of tetrapanax in the making. HELP! Is this going to be like chasing bamboo runs? How do I stop this? Initially, I was digging them up where the roots connect to what seems to be an underground tap root. And then I was seeing if I could root them and have some new plants to give away. But now, it's seems to be really out of control.

Advice?

Thanks,

Liz