Epsom salts can benefit your roses by providing magnesium and sulfur, two essential nutrients for plant growth. Magnesium supports rich green foliage and vibrant petal colors, while sulfur plays a role in overall plant health.
If your soil is deficient due to erosion or pH imbalance, adding Epsom salts can encourage sturdier stems and healthier blooms. For first-year roses, apply 1-2 teaspoons in early spring. For mature bushes, sprinkle half a cup at the drip line.
You can find Epsom salts at most grocery stores or purchase larger quantities from a feed store if you have many roses to feed.