mexican hydrangea
Mia Lopez
Updated on June 03, 2026
Vigorous and easy-to-grow, the semiherbaceous shrub has large, deep-green leaves and often dies-back to the ground in winter. The underground root system is invasive so the plant will spread unless kept in check.
What is a Mexican hydrangea?
Clerodendrum bungei, commonly known as rose glory bower, glory flower or Mexican hydrangea (though not a true Hydrangea and not from Mexico), is a species of flowering plant in the deadnettle family, Lamiaceae. Native to China, it is commonly grown in gardens as an ornamental shrub.
How big do Mexican hydrangeas get?
Height up to 6 feet, many small clustered dark pink flowers with opposite oval shaped leaves that can reach 12 inches in length. The plant releases a strong musky odor.
How do you get rid of Mexican hydrangeas?
How to Kill Mexican Hydrangeas
Remove the Mexican hydrangea’s roots by digging them up with a spade. To completely kill the plant, you must remove all of its roots. Mix 1 part glyphosate into 19 parts water. Dilute 1 part glyphosate into 4 parts water. Burn all of the stems and roots you remove.
How do you get rid of hydrangeas?
Use a sharp spade to cut through the rhizomes (underground root-like stems) to disconnect the hydrangeas you want to keep from those you want to remove. Continually prune the unwanted stems to ground level whenever they appear. Over time these stems should weaken and die.
Can hydrangeas grow in Mexico?
The genus Hydrangea exemplifies the lack of taxon-specific botanical collection activities in Mexico. The discovery of these new species is even more surprising taking into account the considerable size of these plants. All Mexican Hydrangea species are threatened, mainly due to deforestation and land use changes.
Is Rose Glorybower invasive?
Further south, glorybower is reputed to be a bit on the invasive side, and difficult to be rid of, but in this garden it’s only a minor nuisance.
How do you propagate a rose from a Glorybower?
Propagate by seed at 55-64°F (13-18°C) in spring. Propagate by suckers in autumn or spring. Alternatively, propagate by taking semi-ripe cuttings with bottom heat in summer. Root cuttings can be taken in winter.
How do you care for a cashmere plant?
Winter hardy to USDA Zones 7-10 where it is best grown in evenly moist, organically rich, well-drained soils in full sun to part shade. Best in full sun, but often appreciates some light afternoon shade in hot summer climates. Established plants have good drought tolerance.
Is Mexican petunia invasive?
The wild, invasive form of this plant is so aggressive, it’s banned in some states, and it’s on a watch list of invasive plants in others. The state of Florida lists Mexican petunias as “highly invasive.” Native to Mexico and western South America, Ruellia simplex, also known as R. tweediana, R.
What kills Mexican petunia?
A chemical control method is to use glyphosphate. Use this very carefully since it can also eliminate all of your other plants. Cut the Petunias down to the ground and apply the glyphosphate to the stumps of the stems. Be sure to follow the directions and warnings on the label.
How do I get rid of Mexican petunia?
Mowing, tillage or weed-eating the tops off Mexican-petunia will not remove the plants entirely. Instead, plants can be dug up with a shovel, with the aim to remove the entire root mass. There are no known biological control agents for Mexican-petunia.
Are Annabelle hydrangea invasive?
Buckthorn, dandelions, garlic mustard, burning bush Euonymus all fit this classification of invasive. Being able to spread in your garden is acknowledged for Annabelle, but your garden isn’t a natural environment, it’s a garden.
Do Annabelle hydrangeas spread?
Given that they grow between 3 and 5 feet tall, Annabelle hydrangeas already take up a lot of room. However, they also usually spread between 4 and 6 feet, so they need a lot of space to fully expand during their active growth period.
Should hydrangeas be cut back before transplanting?
Many horticulturists recommend root-pruning the plant a few days prior to transplanting. This helps reduce plant shock. Using a spading shovel, dig a shovel-deep ring just outside of the leaf line of the plant at a 45-degree angle. Make only a single cut, disturbing the roots as little as possible.