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Is Sunday fertilizer safe to use before or after overseeding

Yes, Sunday fertilizer is totally fine to use before or after overseeding. It's 100% pesticide-free, so it won't harm new grass seed or seedlings trying to find their footing.

Timing matters, though.
You can apply fertilizer and seed the same day if you want. Seed first and fertilize right after, or let the fertilizer dry first and then spread seed. Either way works.

But don't just dump fertilizer on bare dirt and expect miracles!
Nutrients alone won't prep bare soil for new growth.

For the best results, seed first, then wait until about 60% of the new grass has sprouted before applying nutrients. That's roughly 1 to 3 weeks, but don't watch the calendar. Watch the lawn. Seedlings that haven't broken through the soil yet can't absorb much anyway, so patience here actually pays off.

One thing worth knowing.
Sunday lawn fertilizer pouches don't contain seed. If you want seeding and feeding in one step, Sun & Shade Seed + Feed handles both.

Planning to use weed control around the same time?
That's a different question from fertilizer. Wait at least 1 day after applying Dandelion Doom or Weed & Green before seeding, and at least 5 days after Weed Warrior.

For non-Sunday weed control products, check the label for wait times so you don't waste seeds (or money).

For the full timing breakdown, check out the guide on applying Sunday products in order

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