As we patiently wait for nature to allow us to start growing I was reading The Expert Vegetable Notebook by Dr D G Hessayon (2009) and came across details of life expectancy of seeds.
1 year - Parsnip , Onions (from seed ) 1/2 years
2 Years - Broad Bean , French Bean , Runner Bean , Pea , Sweet Corn.
3 Years - Beet,leaf , Beetroot , Leek , Lettuce , Swede , Tomato , Turnip.
4 Years - Broccoli , Brussels Sprouts , Cabbage , Carrot , Cauliflower , Kale , Spinach.
5 Years - Capsicum , Celeriac , Celery , Chicory .
6 Years - Courgette , Cucumber , Marrow , Squash , pumpkin , Radish.