Obovate Buckthorn: A Lesser-Known Native Tree for Southwestern Gardens
If you’re looking to add native character to your southwestern landscape, you might want to get acquainted with the obovate buckthorn (Frangula betulifolia obovata). This perennial tree species brings authentic regional flair to gardens across the American Southwest, though it’s definitely one of those hidden gems that doesn’t get much attention in mainstream gardening circles.
What Exactly Is Obovate Buckthorn?
Obovate buckthorn is a native tree species that calls the lower 48 states home, specifically thriving in the southwestern regions. As a perennial woody plant, it typically grows as a single-stemmed tree reaching heights greater than 13-16 feet, though environmental conditions can sometimes encourage a shorter, multi-stemmed growth pattern.
You might also encounter this plant listed under its botanical synonyms, including Frangula obovata or Rhamnus betulifolia var. obovata, which can be helpful to know when plant shopping or doing research.
Where Does It Grow Naturally?
This native beauty has established itself across six southwestern states: Arizona, Colorado, Nevada, New Mexico, Texas, and Utah. If you live in any of these areas, you’re in the perfect position to consider adding this regional native to your landscape.
- Species observed
- No observations
Should You Plant Obovate Buckthorn in Your Garden?
Here’s where things get interesting – and a bit cautious. This tree has a somewhat unclear conservation status (listed as S4?T3?, which is undefined), suggesting it might be uncommon or potentially sensitive in some areas. This doesn’t mean you can’t grow it, but it does mean you should be thoughtful about how you source it.
The Native Plant Advantage
As a true native species, obovate buckthorn offers several benefits that make it worth considering:
- Naturally adapted to local climate conditions
- Requires less water and maintenance once established
- Supports local ecosystems
- Provides authentic regional character to landscapes
Versatile Growing Conditions
One of the appealing aspects of obovate buckthorn is its flexibility when it comes to moisture conditions. This tree has a facultative wetland status in both the Arid West and Western Mountains regions, meaning it can handle both wetland and non-wetland conditions. This adaptability makes it a potentially useful choice for gardeners dealing with varying moisture levels in their landscapes.
Important Sourcing Considerations
Given the uncertain conservation status of this species, responsible sourcing is crucial. If you decide to add obovate buckthorn to your landscape:
- Only purchase from reputable native plant nurseries
- Ask about the source of their plant material
- Avoid collecting from wild populations
- Consider supporting nurseries that propagate from ethically sourced seed
The Bottom Line
Obovate buckthorn represents an intriguing option for southwestern gardeners who want to embrace truly native species in their landscapes. While we don’t have extensive cultivation information readily available (which is pretty typical for lesser-known natives), its natural adaptability and regional authenticity make it worth investigating further.
If you’re drawn to the idea of growing this native tree, start by connecting with local native plant societies, botanical gardens, or extension offices in your area. They may have more specific growing information and can help you locate responsibly sourced plants. Sometimes the most rewarding garden additions are the ones that require a little detective work to track down!