Why Late Summer Sowing Works: Why Late Summer Sowing Works – Lawn Advice from The Grass People’s Chris McIlroy
While spring may seem like the natural time to sow grass seed, lawn care experts are encouraging homeowners to look later in the calendar. According to Chris McIlroy, lawn specialist at The Grass People, late summer is one of the most effective times of year to establish new grass or overseed tired lawns.
Why Late Summer Sowing Works
“Sowing in late summer is often overlooked, but it can actually give you some of the best results,” says McIlroy. “The conditions are more stable, soil temperatures are ideal, and there’s less weed competition than in spring. It’s a great window for successful germination.”
Soil is still warm – but the worst heat has passed
“By late August and into early September, the soil holds onto summer warmth but without the extreme temperatures that can dry out young seedlings,” explains McIlroy. “This creates an ideal environment for quick and even germination.”
Rainfall becomes more reliable
One of the key challenges in establishing new grass is consistent moisture. “In late summer, you typically get more regular rainfall,” says McIlroy. “That natural watering supports seed development and reduces the need for constant manual watering.”
Fewer weeds to compete with
Spring sowing often means competing with aggressive weeds. “By late summer, most annual weeds are past their peak,” McIlroy notes. “This gives grass seed a much better chance of establishing without having to fight for space or nutrients.”
A stronger lawn before winter
Sowing in late summer gives your lawn a head start heading into colder months. “New grass has several weeks to grow and develop roots before winter sets in,” says McIlroy. “That makes it stronger, more resilient, and better able to bounce back in spring.”
Ideal timing for repairing worn patches
Summer can take its toll on lawns, especially in high-traffic areas. McIlroy recommends late summer as the perfect time to repair any damage. “Whether it’s from kids, pets or prolonged dry weather, now’s the time to fill in bare spots and encourage uniform growth across your lawn.”
Final thoughts from Chris McIlroy
“Late summer is a golden opportunity for lawn care that many people miss. With the right timing and preparation, you can set your lawn up for long-term success heading into autumn and beyond.”
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