"Is it ok to fertilize my lawn in hot weather?"
Summer is the season when everyone wants their lawn looking its best, but it’s also when grass feels the most pressure. High heat, dry soil, and long days of backyard fun can stress your lawn, which leads many homeowners to wonder: Should I really be fertilizing right now?
As a simple rule of thumb, avoid fertilizing when temperatures are consistently above 30°C. In extreme heat, especially when the soil is dry, fertilizer can do more harm than good. Instead of helping, it can burn the lawn and add stress to grass that’s already working hard just to get through the weather.
If your lawn crunches under your feet or looks more like straw than turf, that’s a sign it’s thirsty, not hungry. Grass needs moisture to take up nutrients, and without it, fertilizer can sit on the blades and cause damage.
When temperatures climb, grass naturally shifts into survival mode. Growth slows, roots conserve energy, and the lawn becomes more sensitive to whatever you put on it. Fertilizing during this time can pull moisture from the plants, leading to browning, thinning, or burned spots.
Heat also tends to come with dry soil. When the ground is too dry, fertilizer can stay on the surface instead of reaching the root zone. That causes nutrients to collect in small areas and increases the chance of damage.
In the height of summer, the goal isn’t to push new growth, it’s to protect the lawn. Water deeply when needed and raise your mower blade a little higher to shade the soil. Once temperatures consistently drop below 30°C and the lawn has regained some moisture, fertilizing becomes both safer and more effective.
At Holmes Grown, we believe good lawn care is a mix of timing and the right products. When the heat is high, focus on watering. When conditions improve, fertilizer can do its best work.