Bermuda Grass Identification Guide
Identify bermuda grass (Cynodon dactylon) by its tough creeping stolons and rhizomes, gray-green blades, and the distinctive finger-like seed head spikes.
Read the full Bermuda Grass encyclopedia entry →
Key Identifying Features
Bermuda grass (Cynodon dactylon) is an aggressive, sun-loving, warm-season perennial grass used as turf but also a stubborn weed. Its signature feature is the seed head: three to seven slender spikes radiating like fingers from a single point at the stem tip. It spreads by both above-ground stolons and underground rhizomes, forming dense, wiry mats.
- Finger-like seed head (digitate spikes from one point)
- Both stolons (runners) and rhizomes present
- Gray-green, fine to medium blades
- A fringe of white hairs at the ligule (leaf collar)
Leaves & Stems
Leaf blades are short, narrow, flat, and gray-green, often with a few hairs near the base. The diagnostic detail at the leaf base is the ligule made of a ring of fine white hairs rather than a membrane. Blades are arranged in two ranks along the stem.
Stems are tough and wiry. Bermuda spreads by flat, branching stolons that creep across the surface and root at the nodes, plus pale scaly rhizomes underground. This dual spreading habit makes it form thick mats and is the reason it is hard to remove from gardens and flower beds.
Flowers & Fruit
Flowering occurs from late spring through fall. The seed head is unmistakable: usually 3-7 purplish or greenish spikes, each 1-2 inches long, spreading out from a single point like the spokes of a hand or umbrella. Tiny seeds line one side of each spike. This digitate seed head is the fastest way to confirm bermuda grass.
How to Tell It Apart from Look-Alikes
- Crabgrass: also has finger-like seed heads, but crabgrass is an annual with wider, often hairy blades and no rhizomes; bermuda is a tough perennial with rhizomes and stolons.
- Nimblewill: finer, bluish, shade-tolerant, with an open panicle (not finger-like spikes) and no rhizomes.
- Goosegrass: forms a flat rosette with a silvery center and zipper-like spikes; bermuda has the radiating digitate spikes and creeping runners.
The combination of digitate seed head + stolons AND rhizomes + hairy ligule is conclusive.
Where You'll Find It
Bermuda grass loves heat and full sun. Find it in lawns, sports fields, roadsides, sidewalk cracks, gardens, pastures, and disturbed soils across warm-temperate and subtropical regions worldwide. It tolerates drought, foot traffic, and mowing but performs poorly in deep shade.
Quick ID Checklist
- Warm-season perennial forming dense wiry mats
- Seed head of 3-7 finger-like spikes from one point
- Both surface stolons and underground rhizomes
- Ring of white hairs at the ligule
- Gray-green short blades in two ranks
- Thrives in full sun; struggles in shade
Frequently asked questions
What is the surest sign of bermuda grass?
The seed head: three to seven slender spikes radiating like fingers from a single point at the top of the stem. Combined with creeping runners and a hairy ligule, it confirms bermuda grass.
How do I distinguish bermuda grass from crabgrass?
Both have finger-like seed heads, but bermuda is a perennial with underground rhizomes and tough stolons, while crabgrass is an annual with wider blades and no rhizomes that dies each winter.
Why is bermuda grass so hard to remove?
It spreads two ways at once: surface stolons that root at the nodes and deep underground rhizomes. Even small rhizome fragments can resprout, so it regrows readily from buried pieces.
Does bermuda grass grow in shade?
Not well. It is a heat- and sun-loving grass that thins out and disappears in deep shade, so dense shade is one place you are unlikely to find it.