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Anyone have any tips on how to avoid seed compost caking. This years John Innes is proving particularly problematic. Starting to lose seedlings.
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Do you water from the top or the bottom? Watering from the bottom seems to make it less worse. JI compost is quite prone to it, I find. You could try covering the seeds with vermiculite rather than the seed compost. -
I found that the John Innes stuff is prone to that, would suggest that could be part of the problem although to be fair it's probably about 20 years ago when I last used it.
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Can't say I've had that problem, but I've been reusing my bags of JI Seed compost for years ... I just microwave it before using it again.
My seedlings are not in it for very long, maybe a couple of weeks max after germination before being pricked out, that might make a difference?
I also cover any small seed with vermiculite, which perhaps protects the surface somewhat?
And I only water from the bottom - standing the seed tray/container in a tray of water for 5 minutes, or standing it on capillary matting.K's Garden blog the story of the creation of our gardenComment
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