Intermediate Paspalum: A Lesser-Known Grass for Southern Gardens
If you’ve stumbled across the name intermediate paspalum in your gardening research, you’re not alone in wondering what exactly this grass is all about. While it might not be the most famous member of the Paspalum family, this perennial grass has quietly established itself in parts of the American South, bringing with it both opportunities and considerations for today’s gardeners.
What Is Intermediate Paspalum?
Intermediate paspalum (Paspalum intermedium) is a perennial grass that belongs to the large and diverse Paspalum genus. As its name suggests, this species falls somewhere in the middle of the characteristics you might expect from paspalum grasses – not the most aggressive spreader, but not the most timid either.
This grass is what botanists call a graminoid, which is just a fancy way of saying it’s part of the grass family and has that classic grass-like appearance we’re all familiar with. Think narrow leaves, upright growth, and those distinctive seed heads that catch your eye in late summer.
Where Does It Come From?
Here’s where things get interesting: intermediate paspalum isn’t actually native to North America. This grass originally hails from South America, particularly Argentina and southern Brazil, where it grows naturally in the warm, humid conditions of the Pampas region.
In the United States, you’ll find intermediate paspalum growing in Georgia and Louisiana, where it has managed to establish itself and reproduce without human help. It’s what we call a naturalized species – not native, but not necessarily problematic either.
Should You Plant Intermediate Paspalum?
The million-dollar question! Since intermediate paspalum is non-native, this decision comes down to your gardening goals and philosophy. Here are some factors to consider:
Potential Benefits:
- Low-maintenance perennial grass that returns year after year
- Adapted to warm, humid southeastern conditions
- Can provide texture and movement in naturalized garden areas
- May offer some erosion control on slopes or disturbed areas
Things to Keep in Mind:
- As a non-native species, it won’t support local wildlife as effectively as native alternatives
- Limited information is available about its long-term behavior in gardens
- May not integrate as seamlessly into local ecosystems
Native Alternatives to Consider
If you’re leaning toward supporting native biodiversity (and we totally get it if you are!), consider these native grass alternatives that thrive in similar conditions:
- Eastern gamagrass (Tripsacum dactyloides) – a robust native with excellent wildlife value
- Switchgrass (Panicum virgatum) – gorgeous fall color and great for birds
- Little bluestem (Schizachyrium scoparium) – compact size with beautiful bronze fall foliage
- Gulf muhly (Muhlenbergia capillaris) – native to the Southeast with stunning pink plumes
Growing Intermediate Paspalum Successfully
If you decide to give intermediate paspalum a try, here’s what you need to know to keep it happy:
Climate and Hardiness
This grass loves warm weather and is likely suited to USDA hardiness zones 8-10, based on its current distribution. It thrives in the hot, humid summers of the Southeast but may struggle in areas with harsh winters.
Growing Conditions
- Sunlight: Full sun to partial shade (though full sun is preferred)
- Soil: Adaptable to various soil types, but prefers well-draining conditions
- Water: Moderate water needs; somewhat drought-tolerant once established
- pH: Tolerates a range of soil pH levels
Planting and Care Tips
Since intermediate paspalum is a warm-season grass, spring is your best bet for planting. Here are some care guidelines:
- Plant after the last frost when soil temperatures are consistently warm
- Water regularly during establishment, then reduce frequency as the plant matures
- Fertilizer requirements are typically minimal – this grass isn’t particularly demanding
- Cut back in late winter or early spring before new growth begins
- Monitor for aggressive spreading, especially in favorable conditions
The Bottom Line
Intermediate paspalum represents an interesting case study in the world of non-native plants. While it’s not invasive or harmful, it also doesn’t offer the same ecological benefits as native species. If you’re drawn to this grass for its low-maintenance nature and adaptability, it could work in naturalized areas or informal landscapes.
However, if you’re looking to create habitat for local wildlife or support native biodiversity, you’ll likely find better options among our native grass species. The choice ultimately comes down to your gardening priorities and the specific role you want this plant to play in your landscape.
Whatever you decide, remember that successful gardening is often about working with your local conditions and understanding the plants you’re growing. Intermediate paspalum may not be the most exciting grass in the world, but it’s certainly an adaptable one – and sometimes, that’s exactly what a gardener needs.
