Choosing Grass Seed: How To Read A Seed Label

NaturaLawn of America Grass SeedNo two bags of grass seed are created equal, which can make knowing what type to purchase a challenge. Push past all the marketing gimmicks and fancy wording and the best way to ensure getting quality grass seed is by reading the specifics on the label. 
 
Grass seed labels can include a mix of numbers, percentages and industry terminology. Below, we decipher the most common items found on a seed label so that you can make smart decisions when it comes time to purchase your own seed or hire a company to put seed down for you. 
 
Pure Seed/Purity
Purity is the percent, by weight, of pure seed of each component in the mixture. Not all the pure seed is live seed. Look for percentages over 97.5—the higher the better.
 
Variety/Kind
Variety is the specific type of turfgrass included. Do not buy seed that does not list the variety. Variety not stated (VNS) seed lots often include older varieties not well adapted to lawns.
 
Germination
Tells how much of each pure seed variety included will sprout (the amount of live seed in the bag).  Look for percentages over 80—the higher the better. 
 
Crop
Crop is the percent, by weight, of seeds in a package that are grown as a cash crop. Examples may include orchardgrass, timothy, clover, redtop and bentgrass, which are considered weeds in turf. Look for seed with a crop of less than 0.3%—the lower the better.
 
Inert Matter
Inert matter is the percent, by weight, of material not capable of growth (i.e. filler).  Filler can be any substance added to take up space.  For example: broken seed that couldn’t be removed, dirt, corn cobs, sand, etc.  Look for the percentage to be less than 2—the lower the better.  Otherwise, you’re paying for “junk”!
 
Weed Seed
Weed seed is the percent, by weight, of weed seed in a package. It can be difficult and expensive to catch all weed seeds during the cleaning process. Acceptable limits range from 0.0% - 0.3%. The lower the percentage of weed seed, the higher the quality of grass seed.  
 
Noxious Weed
Most states have certain weeds so troublesome and undesirable that their presence is required on the seed label. You want a seed that reads “NONE” under this category.
 
Other
  • Buy certified seed—it’s guaranteed by the seller to give you the kind of seed named on the package.
  • Generally speaking, the higher the cost of grass seed, the higher the quality of product.  
  • Avoid…
    • Buying seed out of bulk bins 
    • Seed mixes containing annual ryegrass
    • Contractor type blends of ryegrass 
If you have any questions about reading a seed label or signing up for an aeration and seeding service, get in touch with your NaturaLawn of America NaturaLawn of America expert or reach out to us on Facebook—we’re happy to help.

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Pete Plimmer – Wilmington, DE

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Steve Pfannenstein – Rockville, MN

I wanted to write and let you know how pleased I am with NaturaLawn of America.  I had never used a lawn service before.  I’m against putting more chemicals into the environment, so I decided to see what you could do organically.  My lawn was 1 ½ years old – builder grade seed on builder soil! It was a lawn in need of some help, but I didn’t know how wonderful it could look.
 
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