I am not sure whether I should be embarrassed to admit this or be proud to undertake a scientific experiment on everybody’s behalf! Having read the comments up-thread I thought I would find something in the bottom of my seed tin! . Gardener’s Delight, packaged year ending 30.6.03, sow by 6/2005! It would appear that I last used them in 2016 and successfully. Regrettably, 2017 was a blank year for seed growing whilst I received medical treatment for cancer. I bought my Gardener’s Delight in lieu and if I had to rely on them again, I would definitely be looking for something different! Have sown some today along with 5 other varieties. Just couldn’t resist the challenge.