Related to this question Why is it best to start seeds in shallow trays? I'm questioning the need for seed trays. In particular I'm wondering how did folks start seeds before these mass produced plastic seed trays were available?
Were egg cartons more commonly used? Were regular pots, or special clay trays, used to start seeds? Or was less indoor starting done, because heat mats and grow lights were less available?
I try to use minimal money and fossil fuel to garden. I like direct seeding but wanted to start some things indoors to get to harvests a little sooner. I have a heat mat already and two small grow lights, and I'd be starting small batches of seeds for a small household garden. I have various gardening materials, including some seed trays, but I'm wondering how I could start seeds without those special made plastic trays. How would my great grandma have done it?