A rapid cure for magnesium deficiency in plants Magnesium is necessary for the production of chlorophyll, without which the foliage turns brown & withers. Tomatoes & house plants are particularly susceptible to magnesium deficiency. Early symptoms of deficiency are a yellowing between the veins of older leaves. Apply As required during the growing season. How to Use: Work into the soil as a base dressing. As a liquid feed- dissolve the Epsom salts in water & apply to leaves with a sprayer or watering can or at monthly intervals to normal liquid feeds. Vitax have been in the business of manufacturing garden & horticultural products for over 100 years & are very proud of their long tradition. Experience for yourself the choice, reliability & innovation from Vitax.