The lost pines ecosystem is an inclusion within the larger Post Oak Savannah ecoregion. Deep Carrizo sands provide a unique set of conditions for tree species within the Post Oak Savannah. The Lost Pines region gets its name from the drought hardy variety of loblolly pine that grows within the area. This pine is the westernmost distribution of the loblolly pine, any other variety of pine should not be planted.
The following is a short list of trees well adapted to the lost pines area.
Key: (MAD)
M - Moist soil
A - Adaptable to site
D - Dry sites
| Ash, green | M | | |
| Ash, white | | A | |
| Blackhaw, rusty | | A | |
| Bumelia, gum | | A | |
| Catalpa | | A | |
| Cottonwood, eastern | M | | |
| Dogwood, roughleaf | M | A | |
| Elm, American | M | A | |
| Elm, cedar | | A | |
| Elm, slippery | M | A | |
| Elm, winged | M | A | |
| Eve’s necklace | | | D |
| Farkleberry | | A | |
| Hickory, bitternut | | A | |
| Hickory, black | M | | |
| Laurel, cherry | M | | |
| Mulberry, red | M | A | |
| Oak, bur | | A | |
| Oak, Chinkapin | | A | |
| Oak, Coastal live | | A | |
| Oak, Monterey | M | A | |
| Orange, Osage | M | A | |
| Pecan, native | M | A | |
| Persimmon, Texas/Mexican | | | D |
| Pine, drought-hardy loblolly | M | A | |
| Plum, Mexican | | A | |
| Possumhaw | | A | |
| Redbud, eastern | | A | |
| Redcedar, eastern | | A | |
| Sugarberry/Hackberry | M | A | |
| Sumac, flameleaf | | A | |
| Sycamore, American | M | | |
| Soapberry, western | | A | |
| Willow, desert | | | D |