plant genetics. You’ve most likely got Hibiscus syriacus, or what people commonly call rose-of-sharon. Most of these can get pretty big – into the 12- to 14-foot small-tree size if they’re not pruned. Even when cut back severely, rose-of-sharons are going to attempt to grow to the size programmed by its genes.
Rose of Sharon has a medium growth rate, meaning that it grows approximately 13 to 24 inches a year. A mature Rose of Sharon bush can grow between 8 to 12 feet tall with a 4 to 10 foot spread. The shrubs have a compact, upright growth pattern when young, but tend to spread out as they age.
are Rose of Sharon invasive? A: Rose of Sharon (Hibiscus syriacus) — also known as Althea — is a beautiful shrub but it can also be quite invasive. Unlike bamboo, the Rose of Sharon spreads via its ample and easily germinated seeds. Prevention: This takes effort but if you deadhead the spent flowers before they go to seed, you don’t get seedlings.
Likewise, will Rose of Sharon grow back?
The rose of Sharon shrub flowers on growth from the current year, allowing optimum opportunities for when to prune rose of Sharon. Pruning rose of Sharon shrub may be done in late fall or winter after leaves drop or in early spring before buds form.
How long does a Rose of Sharon bloom for?
1 to 2 years
Is Rose of Sharon poisonous to dogs?
The rose of Sharon can pose a serious health threat to your furry friend. Other Hibiscus species can also be potentially toxic. Although the exact toxins are unknown, the effects are not: Dogs that ingest parts of the plant can suffer from nausea, vomiting, diarrhea and a lack of appetite that may lead to anorexia.
Does Rose of Sharon bloom all summer?
The blooms of Rose of Sharon, also known as shrub althea, are most welcome since they come during the latter half of the summer and into fall when most flowering shrubs have finished flowering. In most regions where rose of Sharon thrives, the flowers are best in July and August.
Where should I plant a rose of Sharon?
Shrub Althea is best planted into rich well-draining, slightly acidic soil in a full sun to part shade location. The rose of Sharon bush prefers moist, well-draining soil, although it will tolerate most soil conditions except those that are soggy or extremely dry.
Can you start a Rose of Sharon from cuttings?
Rose of Sharon can be easily rooted in June and July. Simply take several cuttings from the new growth about four inches long and remove all but the top two or three leaves. Then dip the bottoms of the cuttings into rooting hormone (available at most garden centers.) Fill a pot with some premoistened soil-less mix.
Does Rose of Sharon have a scent?
Rose of Sharon (also known as shrub althea or Hibiscus syriacus) is an easy to grow perennial that can dress up your yard with bright colorful blooms and sweet fragrance. The blooms can be single or double.
Is a Rose of Sharon a tree or bush?
Rose of Sharon “trees” (Hibiscus syriacus) are actually classified by botanists as shrubs, but they can be trained by pruning so as to form one main trunk (thereby becoming tree-like).
Do deer eat Rose of Sharon?
It’s hardy in zones 5 to 9, tends to be deer resistant and tolerates the black walnut’s toxic juglone. A bit more information: Rose of Sharon blooms on the current season’s growth. So pruning, if needed, during the dormant season will not interfere with flowering. They do tolerate heavy pruning.
Do you deadhead Rose of Sharon?
Deadhead the Flowers With rose of Sharon, the seeds are contained in small seed pods that appear just below the blooms. When the flowers of your shrub are done blooming, simply deadhead them. This will nip seed production in the bud and eliminate all those annoying seedlings.
What is the best fertilizer for Rose of Sharon?
For its spring feeding, use a light application of a balanced fertilizer such as 10-10-10 or 10-20-10. In midsummer give it a boost with a low-nitrogen fertilizer such as 0-10-10. Rose of Sharon is susceptible to bud drop and aphid infestations if over-fed, so be conservative with fertilizer amounts.
How do you start a Rose of Sharon seed?
Sow fresh rose of Sharon seeds 1/4 inch deep in full sun in the fall; they will come up in the spring. To start seedlings indoors to have ready for spring, start them 12 weeks before the last frost in your area in sterile potting mix. Checking whether the seeds are viable before planting avoids frustration.
How do I kill Rose of Sharon?
How to Remove Rose of Sharon Cut the rose of sharon shrub down to the soil, using pruning shears, lopers or a chain saw. Dig up all the plant’s roots, using a shovel and pruning shears. Dig up shoots as they spring up from the soil, using a shovel and pruning shears. Spray new shoots with an herbicide like Roundup, if you wish.
How do you take care of Rose of Sharon in the winter?
Protect rose of Sharon by applying a deep mulch of leaves around the base of the plant after the ground has frozen. It can also be protected from the wind by wrapping it loosely in burlap. Do not wrap tightly or cover the top and remove the wrapping at the end of winter.
How do you make a rose of Sharon tree?
There may be one main stem or several stems. Carefully remove the weakest stems and all the branches, up to approximately half the height of the shrub. Use caution; rose of Sharon has thorns. Trim back the upper branches by no more than one-third to shape the new “tree.” Monitor the tree over the summer and fall.