Noel, your WH pics scare me to death. I've seen them take over a favorite BOW in Texas, and their seeds are viable for over a decade!

But it's a clever idea where you get hard winters that kill them off. If you get a warm winter, though, look out. Especially when they flower!

7ac 2015 CNBG RES FHM 2016 TP FLMB 2017 NLMB GSH L 2018 TP & 70 HSB PK 2019 TP RBT 2020 TFS TP 25 HSB 250 F1,L,RBT -206 2021 TFS TP GSH L,-312 2022 GSH TP CR TFS RBT -234, 2023 BG TP TFS NLMB, -160