We Asked Gardeners If Epsom Salt Can Help Hibiscus Bloom into Fall—And Their Answer Surprised Us

We Asked Gardeners If Epsom Salt Can Help Hibiscus Bloom into Fall—And Their Answer Surprised Us

Dmitry Potashkin / Getty ImagesKey PointsApplying Epsom salt does not produce more hibiscus blooms and can even be harmful.Epsom salt adds magnesium to the soil and should not be applied without a soil test.For a prolific hibiscus bloom, give it full sun, consistent moisture, and regular fertilizer.If you have a hardy hibiscus growing in your yard, it’s understandable that you want to maximize its bloom—the large flowers of hibiscus are simply g…