06/01/2026
Before you plant a single seed this spring, pick one up and give it a gentle squeeze. If it feels firm and resists the pressure, the little embryo inside is likely safe and sound. If it crumbles or feels hollow between your fingertips, that seed dried out long before you opened the packet. That quick check takes just two seconds. Want to be absolutely sure your seeds are ready to grow? Here are three more simple tests you can do for free.
The water float test.
Drop your seeds into a glass of water and let them sit for an hour or two. This works wonderfully for larger seeds like beans, peas, and squash. The seeds that sink to the bottom are dense, healthy, and ready to sprout. The ones that remain floating at the top are likely hollow or no longer viable. You can easily skim off the floaters and plant the sinkers with absolute confidence.
The sniff test.
Open your seed packet and take a quick breath in. Healthy seeds should smell like almost nothing at all, perhaps just faintly earthy. Seeds with a higher oil content, like sunflowers and pumpkins, can actually go rancid as they age. If the packet smells slightly sour, sharp, or stale, the natural oils have broken down, and your germination rates will likely be very poor.
The paper towel test.
This is the ultimate way to settle any doubts. Lay ten seeds out on a damp paper towel, fold it over carefully, and slide it into an unsealed plastic bag. Place it somewhere warm and check back in seven to ten days. When you count the sprouts, eight or more means your seed packet is still in excellent shape. If you only see five or fewer sprouts, it is probably time to compost the rest and treat yourself to some fresh seeds.
All of these simple tricks reveal the exact same truth about gardening. A seed viability depends much less on the expiration date printed on the packet and much more on how it was stored. A cool, dark, and dry spot will keep most seed varieties alive and kicking for years. On the other hand, leaving them in a sweltering garage or a humid shed can ruin them in a single season. The seed itself has not changed, just the environment around it.
With just a little bit of water and a paper towel from your kitchen, you can easily find out exactly what is ready to thrive in your garden this year.