Prior to mowing, you should discontinue watering for 1 day before mowing to let the lawn dry out. Fertilizing the New Lawn. Don’t worry, you can walk on it, but try not to dismantle the mulch mat as you step. How Long After Fertilizing Can Pets Go On Lawn? In good growing conditions, grass absorbs nitrogen into its grass blades 15 to 24 hours after application, according to the Midwest Sod Council. 6. In hydroseeding, grass seed, water, fertilizer, wood-based mulch, and a bonding agent are combined in a large tank to create a loose slurry. The new grass needs sufficient time to mature and to begin establishing a root system and will scalp easily. Water the lawn and allow to completely dry before using the lawn after fertilizing. For about three weeks after seeding, or until the grass begins to peek out of the dirt, set a daily watering schedule. Erosion control and stormwater management are important here as you want the lawn moist but not so wet that it washes away the seeds. Read the label first and foremost to know how to use the fertilizer, paying close attention to when to apply it, how much to use and especially how long to wait before allowing people or pets on the lawn. You mow too soon. Mowing too soon will just vacuum up the fertilizer, wasting valuable time and money. Allow 24-48 hours, depending on the label, after applying most synthetic fertilizers before any pets, kids or pregnant women walk on the lawn. It is well known that the chemicals in lawn fertilizer are toxic and can be particularly harmful to pets because they lie closer to the ground and clean themselves with their mouths. Most people wait too long to mow a newly seeded lawn, so mow early and often. There could be some concern if they sprayed a post emergent herbicide shortly before you mowed. Feeding is important for all lawns, but it's especially important for new grass. After you lay down your seedlings, they’ll need time and the right environmental protection to grow. Once the grass has gained a little height, you can ease back to your normal pattern. Quick-release fertilizer costs less than slow-release fertilizer, but it's also much more likely to burn your grass, especially if you apply it improperly. Week 4 and beyond: A month after your new seed has had time to establish, it is safe to begin to cut the lawn as needed. If you are wondering how long after fertilizing can pets go on lawn, look no further. Bermudagrass ( Cynodon dactylon ) germinates quickly, while tall fescue ( Festuca arundinacea ) and Kentucky bluegrass ( Poa pratensis ) take the longest. Once a month has passed, you can begin fertilizing the lawn. Initially mow Kentucky bluegrass, perennial rye, and fine fescue at 1.5 inches and tall fescue at 2.0 inches. ; Allow 24-48 hours, depending on the label, after applying most synthetic fertilizers before any pets, kids or pregnant women walk on the lawn. Spring is here, lawns are coming back to life and it's time to feed that growing grass. Even if your grass is looking a bit out of control, play it safe and wait about a day or two before mowing the lawn after fertilizing… Little if any fertilizer will be picked up by the mower and since you aren't bagging the clippings the fert would stay on the lawn if it was picked up. The grass is at its most vulnerable when the seeds begin to germinate, which can happen seven to 21 days after sowing depending on the grass variety. After fertilizing the lawn, you should wait 24-48 hours before mowing. If you have gone to the trouble of aerating your lawn you really should take full advantage of the situation and I feel adding fresh grass seed to your lawn is a good idea after aeration. 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