In my recent experiments I believe I have proven that when it comes to raising seedling... BIGGER is better. This may come to quite a shock to many gardeners not endowed with large propagating equipment, me included. Luckily a gardener does not have to be stuck with what they inherited ;-)
As you can see from the photo seedlings that were raised in large pots grew to around double the size. This is a massive difference and one I can not igone. It is a real shame though, I was expecting bigger pots to be better but I was hoping the difference was going to be negligible. In order to get anywhere near producing 80% of my own veg I need to constantly have a large quantity of seedlings on the go - I was hoping my current seedling table would be enough. With the small pots I can fit around 200 seedlings on the table, with the large pots only about 70. The small pots I find are also so much quicker and easier to plant out - I can usually manage to quickly dig a hole with just my fingers.
I am curious though, the commercial seedlings available from garden stores often look quite impressive, and their pots are even smaller than the ones I trialled. I suspect they are liquid feeding with artificial fertiliser, so I think a few more experiments are in order before I throw away my small pots. I don’t want to use artificial means to stimulate growth but I might try a regular dose of fish emulsion and see how that goes.
Oh and... Happy solstice to you all - bring on the longer days.