Rose of Sharon Tree

When to Plant Rose of Sharon Trees

For most climates spring and fall are the best times to plant these flowering trees, also known as althea and common hibiscus. In mild climates you have more options. Compensate with plenty of water when planting this ornamental trees in summer. Warmer climates can safely plant althea trees during dormancy in winter.

When to Prune Rose of Sharon Trees

Late winter or early spring is the best time to prune these flowering trees. Fall or winter after leaf drop is also a good time for pruning. If you notice dead, diseased, broken, or crossed branches prune these immediately.

How to Prune Rose of Sharon Trees

Prune althea trees to maintain the treeform shape. New upward growth can be pinched back to maintain a full and rounded canopy. Any new branches coming from the trunk or suckers coming from the ground or roots should be removed. 

How to Care for Rose of Sharon Trees

Hibiscus syriacus will perform best in full sun and moist, but well-drained soil. Apply mulch in a mound a few inches beyond the rootzone at a depth of about 2 inches to reduce watering needs. Feed your hardy hibiscus tree in spring with a slow release fertilizer if needed for nutrient weak soils.

Can I Grow Rose of Sharon Trees in Pots?

You definitely can grow these flowering trees in containers. Choose a planter that has good drainage and is no more than twice the size of the existing container. Use a good quality potting mix, keep the soil moist, and apply a slow release fertilizer in spring for best flowering and growth.

For additional options, be sure to check out the Rose of Sharon collection