Anyone know if this is true? As, say, compared to a rhodie, which in these parts are essentially good forever.

Asking because I was hoping to establish some under a newly planted small dogwood. I love itea, and the suckering is not a problem for me.

But I've read that dogwoods are intolerant of digging in their root zone, so if the itea is going to croak in 5 years, then I'll switch to something else.

This location is ideal for both dogwood and itea: never-failing moisture, loamy soil, part-sun, good air, protected in winter.

Thanks for your help!