NJ Lawns Community

Hey everyone, really hoping someone can help me here. I made a dumb mistake last weekend and applied way too much Scott's Turf Builder to my front lawn in Paramus. It's about 4,000 sq ft and I basically doubled what the bag said because I thought more is better (I know, rookie mistake). Now I've got brown burn streaks all across my Kentucky Bluegrass and I'm freaking out. It's been about 5 days now and it doesn't seem to be getting any better. Any advice on how to fix this before it kills the whole patch? Should I water it heavily? Rake it? I'm willing to do whatever at this point. Thanks in advance!

Oof, been there. The good news is KBG is pretty resilient when it comes to fertilizer burn. First thing - WATER WATER WATER. You need to flush that nitrogen out ASAP. Like I'm talking an inch of water per day for the next week if you can. Run your sprinklers in the morning to minimize evaporation. Second, hit it with some good compost tea once things settle down. I get mine from the guys at Earthly Delights in Ridgewood but you can make your own pretty easy. Third - don't mow it right now. Let it recover. The brown spots might look bad but the roots are probably still alive. Organic approach would be to top dress with a half inch of compost after you flush and just be patient. Could take a few weeks but it'll come back.

Watering is definitely step one but there's more to it than that. You've got chemical burn happening so you need to get those salts out of the root zone. Deep watering every morning for 7-10 days straight - you're trying to push that fertilizer down past the root line. I'd also recommend picking up some gypsum from the Home Depot on Route 17, about 10 lbs per 1000 sq ft. That helps displace the sodium. Once you've flushed it good, hit it with a light application of Milorganite - it's slow release so you can't OD it. And yeah don't touch that lawn for at least two weeks, no mowing, no walking on it. The grass blades that turned brown are dead but the crowns are probably fine. If you see new green growth coming in about 10-14 days you're in good shape. If not, you might need to rake and reseed. What's your irrigation setup?

Quick question - are you running overhead sprinklers or drip? Either way you're going to want to run them. I'd set them for early morning (5-6am) to reduce evaporation loss. If you have an in-ground system in Paramus you're probably good but make sure you're getting even coverage. Get a rain gauge or some tuna cans out there and measure - you want at least an inch per week split between sessions. Don't just water for 20 minutes and call it good. Short frequent watering won't flush anything. We're talking 45 min to an hour per zone, every day for the next two weeks. After that back off to twice a week. Also check your sprinkler heads - I've seen a lot of uneven coverage issues in the area because of mineral buildup from well water. That could actually worsen the burn patches if some areas aren't getting enough water. What kind of water are you on - municipal or well?

Thanks everyone!! Really appreciating the quick responses. I'm on municipal water and I've got an in-ground system with rain birds. I'll definitely crank up the watering schedule and pick up some gypsum today. One more question - should I be worried about my tall fescue patches in the backyard? I didn't fertilize there but I'm noticing they look a little stressed too. Could the runoff have affected them? They're along the same property line where I laid down most of the extra fertilizer.

Good chance the fescue is fine - tall fescue is actually more drought tolerant than KBG so it probably handled the overspray okay. But keep an eye on it. The runoff concern is real though. Depending on how much you put down and your grading, it could have crept into those areas. The fact that it looks stressed is probably just regular mid-summer fatigue combined with heat. Make sure you're watering the whole lawn consistently now. Oh and one more thing - avoid any herbicides for at least a month. Hit it with the gypsum first, wait two weeks, then hit everything with a light organic fertilizer. Your lawn doesn't need the stress of weed control on top of fertilizer burn right now. The weeds can wait.