Using Turf Pigments for Winter Dormancy Transition

As winter approaches and soil temperatures drop, warm-season grasses (like Bermuda and Zoysia) begin to lose their chlorophyll and enter a state of dormancy. The traditional method for maintaining green aesthetics during this period has always been overseeding with cool-season ryegrass.

However, overseeding is incredibly expensive, labor-intensive, and requires massive amounts of water and fertilizer. Even worse, the spring transition—when the ryegrass dies off and the bermudagrass tries to wake up—is often a nightmare of competition that leaves the primary turf weak for the entire summer.

The Colorant Revolution

Forward-thinking superintendents and turf managers are completely abandoning overseeding in favor of organic turf colorants. By painting dormant turf, or applying pigments to transitioning turf, managers can achieve a flawless, Augusta-style green aesthetic at a fraction of the cost.

Pigment vs. Paint: What's the difference?

It's crucial to understand the difference between the two to ensure success:

• Pigments (e.g., Endurant TE or Flex): These do not contain heavy binders. They are designed for actively growing or transitioning grass. They act like a dye to enhance the existing chlorophyll. Because they lack binders, if you apply them to dead, dormant grass, they will wash right off in the rain.
• Paints (e.g., Endurant Premium or Fairway): These contain specialized acrylic binders. They are designed for fully dormant, brown grass. Once dry, the binder locks the color onto the dead leaf tissue, ensuring it won't wash off or transfer onto players' uniforms.

The Biological Benefit of Colorants

Turf colorants aren't just cosmetic. By dying the turf a darker green, you lower the albedo (reflectivity) of the surface. The dark turf absorbs more solar radiation, which can increase the canopy temperature by several degrees. In early spring, this extra warmth is enough to wake the turf out of dormancy weeks earlier than untreated areas!