How to Determine if Your Grass Seed is Still Good

Finding out if your grass seed is still good is fairly straightforward, especially for those with experience in the landscaping industry. In 22 years of working in this field, I've tackled this issue numerous times. Here are the steps and tips I use to ensure the quality of my grass seed:

Checking the Expiration Date

When purchasing grass seed, always check the expiration date on the bag. Grass seed has a limited shelf life and can lose its viability over time. If the seed is past its expiration date, it's likely to be less effective.

Perform a Germination Test

The most reliable way to determine seed viability is to perform a germination test. If you are buying in large quantities, there are companies that can test samples for you. For smaller quantities, you can conduct your own test at home. Here’s how:

Materials Needed

A small handful of grass seed Paper towels or blotter paper A flat surface or tray Water

Step-by-Step Instructions

Take a small handful of grass seed and spread it out on a paper towel or blotter paper. Cover the seeds with the same amount of paper towels or blotter paper. Moisten the paper towels with a small amount of water to keep them damp. Place the setup on a flat surface in a warm area, but out of direct sunlight. Maintain the dampness for several days. During this time, you should start to see signs of life, i.e., sprouting seeds. After a few days, remove the paper towels and count the number of seeds that have sprouted. Some seeds might not sprout, and that’s okay, but a low germination rate indicates that the seed is not viable.

Practical Tips from Experience

Over the years, I've experienced varying germination rates. Some varieties have shown germination rates as low as 10%, which can be frustrating. However, most of the time, I have had good luck with the brands and varieties I use. If you are spreading the seed and notice large gaps, it might be due to low germination rate, poor quality seed, or improper application.

It's important to store your grass seed correctly to ensure its longevity. Store it in a cool, dry place and avoid direct sunlight and high temperatures.

In conclusion, taking the time to check the expiration date and perform a germination test can save you a significant amount of money and effort. Reliable grass seed is essential for a successful lawn. Happy landscaping!