For years, homeowners loved Tall Fescue because it tolerated heat, drought, traffic, and shade better than many other cool-season grasses. However, traditional Tall Fescue had one major weakness: it did not spread well.
When bare spots appeared, homeowners usually needed to overseed because standard Tall Fescue grows in clumps rather than spreading across the lawn.
That’s where Rhizomatous Tall Fescue (RTF) comes in.
This newer type of Tall Fescue produces underground stems called rhizomes that allow the grass to spread slowly and fill damaged areas. As a result, many lawn owners view it as a potential combination of Tall Fescue’s toughness and Kentucky Bluegrass’s self-repairing ability.
In this guide, you’ll learn what Rhizomatous Tall Fescue is, how it works, its advantages and disadvantages, and whether it is the right grass for your lawn.
Quick Answer
Rhizomatous Tall Fescue (RTF) is a type of Tall Fescue that produces underground rhizomes, allowing it to spread and repair small bare spots. It offers excellent drought tolerance, heat resistance, and durability while providing better self-repair than traditional Tall Fescue.
- Definition: A turf‑type tall fescue engineered to grow rhizomes (underground stems).
- Origin: Developed by Barenbrug turf scientists over 20 years ago.
- Unique Trait: Unlike standard tall fescue, RTF spreads horizontally, knitting lawns together.
- Applications: Lawns, sports fields, golf courses, and parks.
Key Benefits of RTF
- Self‑Repairing Turf: Rhizomes regenerate damaged areas and fill in thin spots without overseeding.
- Traffic Tolerance: Ideal for high‑use areas like playgrounds and sports fields.
- Deep Root System: Roots extend 8–10 inches, improving drought tolerance.
- Heat & Shade Adaptability: Performs well in diverse soil types and moderate shade.
- Reduced Inputs: Requires less water, fertilizer, and chemicals compared to traditional grasses.
- Weed Resistance: Dense turf canopy minimizes weed invasion.
What Is Rhizomatous Tall Fescue?
Most traditional Tall Fescue varieties are known as bunch-type grasses.
Instead of spreading through underground stems, they grow outward from individual plants.
Rhizomatous Tall Fescue differs because it develops underground rhizomes that:
- Produce new shoots
- Spread into thin areas
- Improve turf density
- Help repair minor damage
While RTF spreads more slowly than Kentucky Bluegrass or Bermuda Grass, it still offers noticeable self-repair capabilities.
What Are Rhizomes?
Rhizomes are underground stems that grow horizontally beneath the soil surface.
As they expand, they create new grass plants.
Many popular grasses use rhizomes to spread:
- Kentucky Bluegrass
- Zoysia Grass
- Bermuda Grass
- Buffalograss
Rhizomatous Tall Fescue produces fewer rhizomes than these aggressive spreaders, but enough to improve lawn recovery.
Rhizomatous Tall Fescue vs Traditional Tall Fescue
| Feature | Rhizomatous Tall Fescue | Traditional Tall Fescue |
|---|---|---|
| Spreading Ability | Moderate | Minimal |
| Rhizomes | Yes | No |
| Drought Tolerance | Excellent | Excellent |
| Heat Tolerance | Excellent | Excellent |
| Shade Tolerance | Good | Good |
| Traffic Tolerance | High | High |
| Self-Repair | Better | Poor |
| Overseeding Needs | Lower | Higher |
The biggest advantage of RTF is its ability to fill small damaged areas naturally.
How Fast Does Rhizomatous Tall Fescue Spread?
One common misconception is that RTF spreads aggressively.
In reality, it spreads slowly.
Most homeowners notice:
- Increased density after one growing season
- Gradual filling of thin spots
- Better recovery from wear
However, it will not spread as aggressively as:
- Kentucky Bluegrass
- Bermuda Grass
- Zoysia Grass
Think of RTF as a bunch-type grass with limited spreading ability rather than a true spreading turfgrass.
What Are The Advantages Of RTF Turf Over Other Turf Types?
Rhizomatous Tall Fescue (RTF) is a patented variety of tall fescue grass that produces underground rhizomes, allowing it to spread laterally, self‑repair, and fill in bare spots. Unlike traditional tall fescue, which grows in clumps, RTF creates a dense, durable turf that withstands traffic, drought, and heat while requiring less overseeding.
Benefits of Rhizomatous Tall Fescue
Better Self-Repair
This is the feature that attracts most homeowners.
Small bare spots often fill naturally over time.
Excellent Heat Tolerance
RTF retains the heat tolerance associated with traditional Tall Fescue.
This makes it especially useful in:
- Transition zones
- Hot summers
- Areas with occasional drought
Strong Drought Resistance
Tall Fescue develops deep roots.
Many mature lawns produce roots extending:
- 2–3 feet deep
- Sometimes deeper under ideal conditions
These roots help access moisture unavailable to shallower-rooted grasses.
Good Shade Tolerance
RTF tolerates partial shade better than many warm-season grasses.
It often performs well beneath:
- Open tree canopies
- Filtered sunlight
- Partial shade environments
Reduced Overseeding
Because the lawn slowly repairs itself, homeowners often need less frequent overseeding.
Improved Turf Density
The rhizomes gradually increase turf thickness.
Dense turf helps:
- Reduce weeds
- Improve appearance
- Increase durability
RTF vs. Regular Tall Fescue
| Feature | Regular Tall Fescue | Rhizomatous Tall Fescue (RTF) |
|---|---|---|
| Growth Habit | Clump‑forming | Spreads via rhizomes |
| Self‑Repair | Requires overseeding | Repairs itself |
| Traffic Tolerance | Moderate | High |
| Drought Resistance | Good | Excellent |
| Maintenance | Higher | Lower |
| Weed Control | More gaps, more weeds | Dense canopy, fewer weeds |
Potential Drawbacks of Rhizomatous Tall Fescue
No grass is perfect.
RTF also has limitations.
Not a Fast Spreader
Some marketing materials imply RTF behaves like Kentucky Bluegrass.
In reality, spreading occurs slowly.
Major bare areas usually still require reseeding.
Higher Seed Cost
RTF seed often costs more than standard Tall Fescue.
The additional expense may not always justify the benefits for every homeowner.
Slower Recovery Than Bluegrass
Although RTF self-repairs better than regular Tall Fescue, Kentucky Bluegrass generally recovers faster.
Limited Availability
Not every garden center carries true rhizomatous varieties.
Finding quality seed may require ordering online.
Best Growing Regions for Rhizomatous Tall Fescue
RTF performs best in:
Transition Zone
States such as:
- Missouri
- Kentucky
- Tennessee
- Virginia
- North Carolina
benefit from Tall Fescue’s heat tolerance and winter hardiness.
Cool-Season Regions
RTF also performs well throughout:
- Northeast
- Midwest
- Pacific Northwest
where cool-season grasses dominate.
Is Rhizomatous Tall Fescue Good for the Transition Zone?
Yes.
Many turf experts consider it one of the best options available.
The transition zone presents challenges because lawns must survive:
- Summer heat
- Winter cold
- Drought
- Disease pressure
RTF handles these conditions better than many alternatives.
Rhizomatous Tall Fescue vs Kentucky Bluegrass
Many homeowners compare these two grasses.
| Feature | RTF | Kentucky Bluegrass |
|---|---|---|
| Heat Tolerance | Excellent | Moderate |
| Drought Tolerance | Excellent | Moderate |
| Shade Tolerance | Good | Fair |
| Spreading Ability | Moderate | Excellent |
| Germination Speed | Fast | Slow |
| Water Requirements | Lower | Higher |
| Maintenance | Lower | Higher |
Kentucky Bluegrass spreads more aggressively, but RTF typically requires less water and maintenance.
Rhizomatous Tall Fescue vs Bermuda Grass
These grasses serve different climates.
| Feature | RTF | Bermuda |
|---|---|---|
| Type | Cool-Season | Warm-Season |
| Shade Tolerance | Better | Poor |
| Winter Color | Green Longer | Dormant |
| Drought Tolerance | Excellent | Excellent |
| Heat Tolerance | Excellent | Excellent |
| Spread Rate | Moderate | Aggressive |
How to Plant Rhizomatous Tall Fescue
Step 1: Test the Soil
Check:
- Soil pH
- Nutrient levels
- Organic matter
Ideal pH:
- 5.8–7.0
Step 2: Prepare the Area
Remove:
- Weeds
- Debris
- Excess thatch
Loosen compacted soil.
Step 3: Apply Seed
Spread seed evenly using a broadcast spreader.
Follow label recommendations for seeding rates.
Step 4: Water Properly
Keep the seedbed consistently moist.
Avoid allowing the soil surface to dry completely.
Step 5: Mow Carefully
Begin mowing when grass reaches:
- 3–4 inches
Avoid removing more than one-third of the blade height.
Best Time to Plant Rhizomatous Tall Fescue
Ideal Time
- Early fall
This period offers:
- Warm soil
- Cooler air temperatures
- Reduced weed pressure
Second-Best Time
- Spring
However, spring seedlings often face summer stress before becoming fully established.
Maintenance Requirements
RTF requires moderate maintenance.
Mowing Height
Maintain:
- 3–4 inches
Taller mowing promotes deeper roots.
Watering
Most lawns need:
- 1–1.5 inches per week
including rainfall.
Fertilization
Apply fertilizer primarily during:
- Fall
- Early spring
Avoid excessive summer fertilization.
Common Problems
Brown Patch Disease
RTF can still develop fungal diseases during hot, humid weather.
Drought Stress
Although drought tolerant, prolonged drought may still cause dormancy.
Soil Compaction
Compacted soil restricts root growth and turf density.
Popular Rhizomatous Tall Fescue Varieties
Examples include:
- Rhambler SRP
- Firecracker SLS
- Titanium G-LS
- Catalyst
- Traverse 2 SRP
Seed availability varies by region and supplier.
Is Rhizomatous Tall Fescue Worth It?
For many homeowners, yes.
If you like Tall Fescue but wish it repaired itself better, RTF can be an excellent upgrade.
It provides:
- Better recovery
- Greater density
- Excellent drought tolerance
- Strong heat resistance
Just remember that it spreads slowly and should not be expected to behave like Bermuda Grass or Kentucky Bluegrass.
Final Thoughts
Rhizomatous Tall Fescue bridges the gap between traditional Tall Fescue and spreading turfgrasses. It retains the drought tolerance, heat resistance, and durability that make Tall Fescue popular while adding limited self-repair capability through underground rhizomes.
For homeowners in the transition zone or cool-season regions who want a tough, attractive lawn with lower maintenance requirements, Rhizomatous Tall Fescue remains one of the best turfgrass options available today.
Frequently Asked Questions
What is Rhizomatous Tall Fescue?
It is a Tall Fescue variety that produces underground rhizomes and can slowly spread.
Does Rhizomatous Tall Fescue spread?
Yes, but much more slowly than Kentucky Bluegrass or Bermuda Grass.
Is RTF better than regular Tall Fescue?
It offers improved self-repair while maintaining similar drought and heat tolerance.
Is Rhizomatous Tall Fescue invasive?
No. Its spreading ability remains relatively controlled.
How long does RTF take to establish?
Most seed germinates within 7–14 days and establishes over several months.
Is RTF good for shade?
Yes. It tolerates partial shade better than many warm-season grasses.
Does RTF require less overseeding?
Generally yes, because it can fill small thin spots naturally.
Can Rhizomatous Tall Fescue survive drought?
Yes. Its deep roots provide excellent drought tolerance.
What is the best time to plant RTF?
Early fall is usually the ideal planting period.
Is Rhizomatous Tall Fescue worth the extra cost?
For many homeowners, the improved density and self-repair justify the higher seed price.
References
- Barenbrug USA – Unleashing the Power of Rhizomatous Tall Fescue
- Turfgrass Research – Is Rhizomatous Tall Fescue Worth It?
I’m David man behind Lawn Mowerly; I’ve been dealing with lawnmowers and Tractors with my father since I was a kid. I know every make and model and what each one is capable of and love helping people find the perfect equipment for their needs.