Best Grass to Mix with St. Augustine: Top Options for a Healthier Lawn
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Introduction
St. Augustine grass is a popular choice for warm climates thanks to its thick, lush appearance. However, it doesn’t always perform well in every condition—especially in high-traffic areas or partial shade. That’s why many homeowners consider mixing it with other grass types to improve durability and coverage.
In this guide, we’ll explore the best grasses to mix with St. Augustine and how to do it properly for a greener, more resilient lawn.
Why Mix Grass with St. Augustine?
Mixing grass types can solve several common lawn problems. St. Augustine spreads through stolons (runners), but it can struggle in certain environments.
Here’s why mixing works well:
- Improves tolerance to shade and foot traffic
- Helps fill in patchy or thinning areas
- Increases overall lawn resilience
- Reduces maintenance issues over time
A well-balanced lawn mix can give you both beauty and durability.
Best Grass Types to Mix with St. Augustine
✔️ 1. Bermuda Grass
Bermuda grass is one of the most common companions for St. Augustine.
Why it works:
- Extremely durable and traffic-resistant
- Thrives in full sun
- Helps strengthen weak areas
Keep in mind: Bermuda can be aggressive and may overtake St. Augustine if not managed properly.
✔️ 2. Zoysia Grass
Zoysia is a great middle-ground option for homeowners.
Benefits:
- Tolerates both sun and partial shade
- Dense growth helps prevent weeds
- Low maintenance once established
It blends well visually with St. Augustine, making your lawn look more uniform.
✔️ 3. Centipede Grass
If you want a low-maintenance lawn, Centipede grass is a smart choice.
Advantages:
- Requires less fertilizer
- Handles acidic soils well
- Slower growth means less mowing
It mixes best in lawns where you want a natural, less manicured look.
✔️ 4. Ryegrass (Seasonal Option)
Ryegrass is often used for overseeding during cooler months.
Why use it:
- Keeps your lawn green in winter
- Germinates quickly
- Works as a temporary filler
Note: Ryegrass won’t permanently mix—it dies off when temperatures rise.
best grass to mix with st augustine in 2026
1. Scotts Patch Lawn Repair

For St. Augustine grass, this blend fixes bare spots efficiently while adding organic mulch and slow-release fertilizer. It’s ideal for thickening weak patches without overwatering. The mulch retains moisture, and the fertilizer boosts root growth, making it great for warm climates.
Mixing it with fine fescue or buffalo grass can improve density further. Works best in spring or fall for consistent results. Simple application saves time compared to manual patching.
2. Augustine Grass Fertilizer Complete

St Augustine Grass thrives with balanced nutrition, and this fertilizer delivers slow-release nutrients tailored for dense, green lawns. It supports deep root growth and resiliency, making it ideal for warm-season clovers like clover or buffalo grass when mixed. Both complement St Augustine’s shade tolerance and drought resistance, enhancing overall turf health.
For mixed lawns, buffalo grass adds drought tolerance, while clover improves soil structure and nitrogen fixation. This fertilizer ensures St Augustine’s vigor while pairing it with complementary grasses for a lush, low-maintenance yard. Results come steady, reducing the need for frequent applications.
3. Southern Atrazine St. Augustine

St Augustine grass thrives best when paired with cool-season grasses like tall fescue or Kentucky bluegrass. These grasses complement its dense growth and shade tolerance, creating a lush, resilient lawn. The herbicide works well with these mixes, controlling broadleaf weeds without harming the St Augustine’s natural spread.
For warm-season blends, buffalo grass or zoysia offer drought resistance, balancing St Augustine’s moisture needs. This combination keeps weeds down while maintaining a hardy, low-maintenance turf. The herbicide’s targeted action ensures clean results without disrupting the desired grass blend. It’s ideal for both lawns and landscaped areas.
4. Augustine Grass Fertilizer Complete

St Augustine Grass thrives with balanced nutrition, and this liquid fertilizer delivers slow-release nutrients tailored for dense, heat-resistant growth. It boosts root development and stress resilience, ideal for heavy foot traffic. Mixing it with complementary grasses like zoysia or centipede grass enhances turf uniformity and longevity.
For best results, combine it with warm-season grasses needing similar care—zoysia complements its shade tolerance, while centipede grass reduces water use. This blend ensures consistent color and durability across mixed lawns.
5. SodPods® St. Augustine Palmetto

For St. Augustine grass repair, these plugs offer quick, stress-free installation. Their dense roots spread fast, filling gaps in warm climates without extra effort. Perfect for patching thin spots, they thrive in shade and heavy soils, making them ideal for low-maintenance lawns.
Mixing with buffalo grass or centipede can improve durability. Buffalo adds drought tolerance, while centipede boosts heat resistance. Together, they create a resilient blend for consistent growth. Best suited for southern lawns needing quick, natural recovery.
6. Sunniland St.Augustine Weed Feed

St. Augustine grass thrives in warm climates and handles heat well, but it needs consistent feeding to stay dense and weed-resistant. Pairing it with a slow-release fertilizer like this product keeps it lush without overworking roots. For best results, mix it with a nitrogen-rich topdressing or a light layer of compost to boost soil fertility and support deep root growth.
For larger lawns like 5000 sq ft, this fertilizer’s balanced formula helps maintain St. Augustine’s vigor while discouraging weeds. Consider adding a shade-tolerant grass like centipede or zoysia in sunny spots to complement its growth. Proper spacing and mowing height also improve overall lawn health.
7. Augustine Grass Fertilizer Complete

St Augustine Grass thrives best with balanced nutrition, and this liquid fertilizer delivers slow-release nutrients tailored for dense, heat-resistant lawns. It boosts root growth and stress resilience, ideal for areas with heavy foot traffic or poor soil. Mixing it with a nitrogen-rich top-dressing like tall fescue or buffalo grass enhances overall turf density and color.
For best results, combine it with cool-season grasses like Kentucky bluegrass or perennial ryegrass to create a mixed lawn that handles seasonal shifts. This blend ensures year-round vigor, especially in warm climates where St Augustine’s needs shift with temperature changes.
8. LESCO lb. St. Augustine

St. Augustine grass thrives in warm climates and handles heavy foot traffic well, but its slow spread can make it vulnerable to weeds. Mixing it with fast-growing grasses like zoysia or centipede helps fill gaps quickly while reducing weed pressure. The weed-and-feed formula targets broadleaf weeds efficiently, giving St. Augustine the edge it needs to stay dense and healthy.
For best results, blend St. Augustine with a grass that complements its low-maintenance traits—zoysia adds resilience, while buffalo grass offers drought tolerance. The herbicide in the mix ensures weeds don’t outcompete it, keeping lawns lush without over-reliance on chemicals.
9. Scotts PatchMaster Lawn Repair

For St. Augustine grass, which thrives in sun-to-shade conditions, this mix combines fine-tuned seed, slow-release fertilizer, and mulch to repair thin spots efficiently. The blend ensures quick germination and deep root growth, ideal for the grass’s heat and drought tolerance. Mulch helps retain moisture, while the fertilizer provides balanced nutrition without overpowering its delicate roots.
Mixing it with St. Augustine keeps the lawn dense and resilient. The seed variety adapts well to partial shade, while the fertilizer’s controlled release prevents stress. This combo restores patches fast, supporting the grass’s natural resilience in varying light. It’s perfect for maintaining a lush, low-maintenance turf.
10. SeedRanch St. Augustine Lawn

St Augustine lawns thrive best with cool-season grasses like tall fescue or Kentucky bluegrass mixed in. These pairings help balance heat tolerance and shade resistance, keeping your lawn lush during summer’s peak. The fertilizer supports St Augustine’s dense growth while the added grasses fill gaps and improve recovery from wear.
For a fuller, more resilient lawn, consider buffalo grass too—it handles drought and heat better than St Augustine alone. Just ensure proper soil prep and watering to avoid stress. This mix ensures year-round vigor without over-reliance on one grass type.
Common Mistakes to Avoid
Mixing grasses can backfire if not done correctly.
- Choosing incompatible grass types
- Ignoring sunlight requirements
- Overlapping aggressive species (like Bermuda)
- Poor lawn maintenance after planting
Avoiding these mistakes will help your lawn thrive long-term.
FAQs
1. Can you mix Bermuda and St. Augustine grass?
Yes, but Bermuda grows aggressively and may dominate over time.
2. What grass grows best in shade with St. Augustine?
Zoysia is a great option for partial shade conditions.
3. Is it okay to overseed St. Augustine lawn?
Yes, especially with ryegrass for seasonal improvement.
