Hello. I am in north East Texas, in zone 8b. I planted two moringa trees from seed last year and they grew well and even flowered. They both died in the freeze but when I went to dig them up, the roots looked alive and healthy so I left them in the ground hoping the moringa would grow back from roots. It’s now June 14th and I still don’t see any shots from the ground. Is it time to give up on them and dig them up?