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Care Instructions for Rose of Sharon

Blue Rose of SharonBotanical name: Hypericum calycinum or hibiscus syriacus.

Rose of Sharon has long been one of the most popular of all shrubs. They are excellent additions to your sunny perennial garden as a background for shorter perennials or planted singly as specimens throughout the yard. Their dramatic color and tropical flair will add charm wherever you plant them.


Plant 5-8' in apart in full sun to partial shade. Dig a hole twice the size of the pot your Rose of Sharon is in. Carefully remove the plant from the pot. Score a vertical mark on all four sides of the root ball to encourage roots to grow out into the surrounding soil. Hold the root ball in the hole with the top of the root ball level with the soil surface and carefully fill in around the root ball. Firm soil around the plant with fingers to remove any air pockets. Water thoroughly.

Soil Preparation
Although Rose of Sharons do well in average soil, for optimum results you can improve your soil as follows:

  1. Spade or rototill the soil to a depth of 12-15".
  2. Mix in a generous 2-4" layer of dehydrated manure, garden compost or peat moss, and Spring Hill’s Advanced Formula Plant Food. (If soil is already rich in garden loam and well drained, the addition of Spring Hill’s Advanced Formula Plant Food will provide the ideal conditions for superior growth and blooming.)

Continuing Care
When rainfall is less than 1" a week during the summer, water your Rose of Sharons thoroughly each week. A 2-4" layer of mulch will help retain moisture and keep weeding to a minimum. Each spring, apply a surface dressing of Spring Hill’s Advanced Formula Plant Food to your plants, scratch into soil and water thoroughly.

Prune to maintain a desired shape and to remove dead or broken branches. Pruning may be done in late fall, after the plant is done flowering, or in early spring. After the ground freezes, apply a 2-4" layer of mulch to protect the roots in areas where the ground tends to heave during periods of alternate freezing and thawing. Remove winter mulch in spring, being careful not to damage young growth.

Have another question? Return to the Customer Service Help page or send an e-mail directly to Customer Service .