Thryallis Shrub Care – How To Grow Thryallis Plants

Yellow Flowered Thryallis Plants
(Image credit: Linjerry)

If you’re looking for year-round blooms and an ornamental shrub for your sub-tropical garden, look no further than the low-maintenance and gorgeous thryallis. With just a little thryallis plant info, you can easily grow this pretty, warm-climate shrub.

What is a Thryallis Plant?

Thryallis (Galphimia glauca) is an evergreen shrub of medium size that produces yellow flowers year round. It thrives in sub-tropical climates, and in the U.S. is becoming more popular for hedging and ornamental use in South Florida. Thryallis grows to about six to nine feet (two to three m.) tall and forms a dense and compact oval shape. It can be used alone or alternated with other shrubs to create a variety of textures, sizes and colors in a hedge.

How to Grow Thryallis Shrubs

Growing thryallis shrubs is not difficult if you live in the right climate. In the U.S. it thrives in South Florida, the southern tip of Texas, parts of Arizona, and along the coast of California. Find a location in your garden with full sun to help this bush grow best and produce the most flowers. Once your thryallis is established, it will tolerate drought well so watering is not usually necessary. Thryallis shrub care is not very labor intensive, one great reason to use it as an ornamental shrub. There are no known pests or diseases to worry about and even deer won't nibble on this shrub. The only maintenance you may need to perform is to preserve the level of formality you prefer. These shrubs can be trimmed into tight shapes, thanks to their density, but they can also be left to grow more natural and still look nice. If you are thinking of growing thryallis shrubs in your yard or garden, just be sure you have the right climate for it. These bushes will not tolerate cold temperatures and you may lose them over the winter in a freeze. Otherwise, with warmth and sun, your thryallis will thrive, grow, and add color to your garden.

Mary Ellen Ellis

Mary Ellen Ellis has been gardening for over 20 years. With degrees in Chemistry and Biology, Mary Ellen's specialties are flowers, native plants, and herbs.