Don
I”ve just made up 24 soil blocks to sow scallions – I put 10/11 seeds per block, thus using up a 250 seed packet in its entirety. The blocks together can be snugly covered with a propagation lid which is designed to fit over a 15-module tray. We’ll see whether they do better or worse than traditional modules, but you can increase your ‘units of growth’ by 60% for the same area. For those with limited staging space at this time of year, this can be very useful.
The other thing they are very useful for if you can be bothered is creating rows across your no-dig beds of blocks to allow uniform seeding. I’ve done this very successfully before with radish and am going to try it this spring with carrots, looking to generate 20 – 40 seedlings per 1.5m row across my bed. The blocks will create a row of 20 sowing areas direct in the ground, hopefully with uniform spacing. The extra time at sowing will hopefully be recouped by no need for thinning…..
As is always the case, the test of the cake will be in the eating……