By Mary H. Dyer, Master Naturalist and Master Gardener Rose of Sharon is a hardy plant that usually grows in difficult growing conditions with very little maintenance. However, even the toughest plants can run into trouble from time to time. If you notice your rose of Sharon has yellow leaves, you're understandably perplexed about what has befallen this trusty late summer bloomer. Read on to learn a few of the most common reasons for rose of Sharon leaves turning yellow. What Causes Yellow Leaves on Rose of Sharon? Poorly drained soil is one of the primary reasons for rose of Sharon leaves turning yellow. The moisture can't drain effectively and soggy soil suffocates the roots, which causes drying and yellowing rose of Sharon leaves. You may need to move the shrub to a more suitable location. Otherwise, improve drainage by digging a generous quantity of compost or bark mulch into
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