Sowing seed that is old is a bit of a gamble. It might germinate well, but it might not. Over time, seed viability decreases, and different seeds have different storage times.
To take the guesswork out of sowing old seed, do a simple viability test. It will tell you if the seed is worth sowing at all, and how much to sow. If only a small percentage of seeds germinate, you’ll need to sow a greater number to ensure a decent crop.
Follow our 14-day test to check whether your old seed is worth sowing, below.