Is Epsom Salt Good for Plants? Mostly No, and Here Is Why
Epsom salt is magnesium sulphate. It helps the small number of plants actually short of magnesium, and does nothing at all for the rest — sometimes real harm.
4 guides in Lawn & Soil.
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Worm castings are worm manure — a mild fertiliser whose real value is microbial, not nutritional. What the numbers mean and how much you actually need.
Epsom salt is magnesium sulphate. It helps the small number of plants actually short of magnesium, and does nothing at all for the rest — sometimes real harm.
Feeding tomatoes the same thing all season is why plants go enormous and green with little fruit. What to switch to, when, and why calcium is not the answer.
Blood meal, bone meal, kelp, fish emulsion and compost do different jobs at different speeds. The NPK numbers, and which to reach for when.
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