Adding Epsom salt without checking your soil’s magnesium levels can lead to unnecessary application, causing harm rather than benefits.
Not all plants require extra magnesium, and using Epsom salt on plants that don't need it could damage them or stunt growth.
Excessive amounts of Epsom salt can create an imbalance in your soil’s nutrient levels, leading to toxic salt buildup.
Epsom salt only addresses magnesium and sulfur deficiencies. Ignoring other nutrient needs can leave plants unhealthy.
Sometimes poor plant health is due to poor drainage or other environmental factors, not a lack of magnesium.
Epsom salt needs time to be absorbed by plants, and results may not appear right away. Immediate improvements are rare.
Some plants that thrive in acidic soil, such as blueberries, may not benefit from Epsom salt.
Epsom salt is not a solution to all plant problems, and overuse can lead to nutrient imbalances or soil issues.