![]() ![]() Foliage:ĭeciduous with medium-green, heart- or maple-shaped leaves, although there are a few exceptions. Shades of white, pink, red, and purple sometimes with a contrasting throat. Rose of Sharon bushes start blooming in July and continue into fall or until the first frost. Prefers moist, yet well-drained soil mulch to help retain moisture. Height/Spread:Ĩ to 12 feet tall, 6 to 10 feet wide, depending on the variety Exposure:įull sun to partial afternoon shade (best flowering in full sun). Rose of Sharon, shrub althea also shares the common name hardy hibscus with Hibiscus moschuetos. On this page: Basics | Planting | Care and Maintenance | Pictures | Design Ideas | Is rose of Sharon invasive?īuy rose of Sharon plants from Proven Winners. In fact, some hardy hibiscus varieties, like the popular rose of Sharon, can overwinter outdoors in temperatures as cold as 20° below zero. ![]() Hibiscus plants aren’t only for the tropics. Apply fertilizer only to moist soil, and then water well to distribute the substance evenly.Paraplu Violet® rose of Sharon. Excessive fertilizer can also burn the roots and damage the plant. However, don’t overdo it, as too much fertilizer can scorch the foliage and cause yellowing. Inadequate fertilization, especially lack of nitrogen, may be the cause for rose of Sharon leaves turning yellow. The problem, caused by insufficient iron in the soil, is usually ameliorated by applying iron chelate according to label directions. Remember that a healthy tree, properly watered and fertilized, is more resistant to infestation.Ĭhlorosis is a common condition that frequently causes the yellowing of shrubs. These and other sap-sucking pests are usually easily controlled by regular applications of insecticidal soap or horticultural oil. Both suck the juices from the plant, which can cause discoloration and yellowing rose of Sharon. Rose of Sharon is relatively pest resistant, but pests such as aphids and whiteflies may be a problem. Watering in the morning is best, as watering late in the day doesn’t allow sufficient time for the leaves to dry, which may invite mildew and other moisture-related diseases. Don’t water again until the top of the soil is dry. ![]() Allow the top 2 to 3 inches (5-8 cm.) of soil to dry, and then water deeply enough to soak the roots. Similarly, overwatering may be the culprit when leaves turn yellow on rose of Sharon (especially when overwatering is compounded by poorly drained soil). Otherwise, improve drainage by digging a generous quantity of compost or bark mulch into the soil. You may need to move the shrub to a more suitable location. The moisture can’t drain effectively, and soggy soil suffocates the roots, which causes drying and yellowing rose of Sharon leaves. Poorly drained soil is one of the primary reasons for rose of Sharon leaves turning yellow. What Causes Yellow Leaves on Rose of Sharon? Read on to learn a few of the most common reasons for rose of Sharon leaves turning yellow. If you notice your rose of Sharon has yellow leaves, you’re understandably perplexed about what has befallen this trusty late summer bloomer. However, even the toughest plants can run into trouble from time to time. Rose of Sharon is a hardy plant that usually grows in difficult growing conditions with very little maintenance. ![]()
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