I've been struggling to run down a Texas Torchwood for nearly 2 years now. They are native to South TX and Mexico. I found one at the National Butterfly Center in Mission, TX. I called them and they had only 1 left in their "Plants for Sale" nursery. Bush was $8 but shipping was $16. But I've wanted one for so long, I sprang for it. Got it within a week! It's 8" tall and had a very well-established root system. Lots of white soft roots and what looked like one tap root meandering below dirt line. It took a 12" deep pot to avoid damaging the roots! I'm so pleased to have finally found one!
They are evergreen, flower and fruit (edible) intermittently from March-October, attract pollinators and birds and LOVE sandy soil! It will make a lovely shrub 4-6' x 4-6' planting at one bare corner of the yard down at our cabin property in Gause. That soil is VERY sandy. It should be happy there with adequate fertilizer/amendments and monthly watering. These are freeze hardy, too! A fellow Texan on my other garden forum said hers survived the Texas 'Snowpocalypse' in February, so I'm happy to hear that. Of course, hers is an established tree/bush,
I'll likely keep mine up here in its pot this winter to see how it deals with our occasional dips below 32º and to see how fast it grows. If all goes well, I'll go ahead and plant it out first part of March (unless any Torchwood fans have contrary planting/timing suggestions).