I suspect due to colder weather and because of more erraticness. We've had some colder stretches and we're now experiencing more sudden cold snaps deeper into S

I suspect due to colder weather and because of more erraticness. We've had some colder stretches and we're now experiencing more sudden cold snaps deeper into Spring. Latter situation especially bad if a plant is coming out of dormancy and then experiences freezing temperatures. The label I saw was on a native to Mexico plant.