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Galphimia glauca

Galphimia glauca

Common name thryallis
Family malpighiaceae
Life cycle shrub (Z9-10)
Flowers yellow (spring-fall)
Size 6'
Light sun-part shade
Cultural notes drought-tolerant

Low care shrub covered in yellow flowers throughout the growing season. It is popular as a background planting in wide borders, visual barriers, or foundation plantings (because they are easily pruned or sheared into a low hedge). They are root hardy to zone 8, but online sources say top growth may be killed by temperatures dipping below 30F. So I was surprised how well our specimen weathered the freeze into the mid-teens in January 2018 – it was one of the only plants in the garden to stay evergreen, and never missed a beat. Native to Central America.
We planted ours as a nice-looking smallish shrub in late May (photo below), and by early July it had not only grown a bit, but has also become even more floriferous. Since then it has only grown larger and fuller. One of my favorite "new plants" since moving to Texas.

Galphimia glauca

In our garden, this plant grows in the following area: back fence border

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Last modified: October 20, 2019
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