RedDirtWarrior
Member
Do you sometimes reuse your potting soil?
I used to do this without any problem (only for repotting bigger plants, not for seedlings. For seedlings it doesn't work). But lately I have a lot (3/4 of what I replant) of plants dieing overnight when I replant them in already used soil. So I've decided not to do this anymore.
Siever
Depends on how much salt buildup the soil has. Organic soil reused works great if you let it rest for a few months.
generally even if you have salt buildup in soil, just flushing it and letting it rest for a while works good.
You should just dump all your old potting soil into a compost heap sort of thing and let it regenerate.