Yes, @nonbinary-naturalist if you check the DQA section, you can see that iNaturalist automatically marks some observations as captive if many of the observations of that species in that area are captive. This is what is happening with your Crape Myrtles:
You can read about this here:https://forum.inaturalist.org/t/why-are-some-taxa-automatically-captive-cultivated/15638