Ammonium sulfate before seeding?

Josh Smith

LawnSite Member
Location
Long Island
The soil test I got recommended ammonium sulfate. I'm doing a complete renovation and plan on seeding in a couple weeks. Will it harm seed germination? TIA
 

KerbDMK

LawnSite Gold Member
Location
Minneapolis, MN
No, it won't harm seed germination, but it's important not to use too much at one time. It's a fast release fertilizer and can burn turfgrass.

I would recommend using a good "starter fertilizer" like Scotts Starter Fertilizer for your renovation. Then in the spring start using Ammonium sulfate fertilizers for seasonal fertilization, however, you may still be able to use some ammonium sulfate as your last fall fertilizer application.

A good example of an enhanced efficiency fertilizer with ammonium sulfate that you can use for your regular fertilizations would be one like this from Greenview. https://www.greenviewfertilizer.com...a-Lawn-Fertilizer__21-29187.aspx#.XVxFhXdFwUE
 
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KerbDMK

LawnSite Gold Member
Location
Minneapolis, MN
Take a look at Scotts "Starter for new grass with weed control"
https://www.homedepot.com/p/Scotts-...New-Grass-Plus-Weed-Preventer-23200/203716573

If it seems pricy --at about $38--you are right. It contains mesotrione--better, it kills crabgrass. and it costs more. Covers 5000 sqft.
Probably you can get by with the ordinary starter fert with no weed control in the fall.
I use the starter with weed preventer in my lawn for fall seedings because I have a lot of broadleaf weed pressure coming from a neighboring property that does not control its weeds. Here in MN, by the time I can spray the new seedlings it's really too late in the season to effectively get those weeds and I'll be stuck with them through a good part of the following spring.
 

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