There’s a moment every spring where you suddenly notice it, the grass is coming back.
After months of looking dull, brown, or completely buried under snow, lawns start turning green again almost out of nowhere. And it’s not just your imagination; there’s actually some pretty cool science behind it.
Grass doesn’t die in the winter, it goes dormant. When temperatures drop and sunlight disappears, it essentially shuts down to conserve energy. But as soon as things start to change, longer days, warmer soil, more moisture, that’s when it “wakes up.”
The key player here is chlorophyll, the pigment that gives grass its green colour. As sunlight increases in the spring, grass starts producing more of it again, which is why that green colour comes back so quickly.
Temperature plays a big role too. Once soil temperatures consistently rise to around 5 to 10 degrees Celsius, grass roots become active again and growth starts to pick up. Add in spring rain, and you’ve got the perfect conditions.
That’s why right around now, everything starts changing fast, and before long, it goes from “hey, the grass is back” to “okay… I guess it’s time to cut the lawn again.”
It’s one of those small seasonal shifts, but it’s also one of the clearest signs that spring has officially arrived.
