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Giant Thevetia

Thevetia thevetioides

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Giant Thevetia (Thevetia thevetioides) at A Very Successful Garden Center

Giant Thevetia flowers

Giant Thevetia flowers

(Photo courtesy of NetPS Plant Finder)

Giant Thevetia (Thevetia thevetioides) at A Very Successful Garden Center

Giant Thevetia in bloom

Giant Thevetia in bloom

(Photo courtesy of NetPS Plant Finder)

Giant Thevetia (Thevetia thevetioides) at A Very Successful Garden Center

Giant Thevetia fruit

Giant Thevetia fruit

(Photo courtesy of NetPS Plant Finder)

Height:  15 feet

Spread:  20 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  9a

Other Names:  Be-still Tree, syn. Cascabela thevetioides

Description:

An elegant shrub or small tree grown for its large, fragrant yellow flowers in summer; an airy, open habit with fine textured foliage; often used as a patio plant; can become somewhat sprawling if left unattended; parts of this plant are known to be toxic

Ornamental Features

Giant Thevetia features showy clusters of fragrant yellow trumpet-shaped flowers at the ends of the branches from mid summer to late fall. It has attractive dark green evergreen foliage. The glossy narrow leaves are highly ornamental and remain dark green throughout the winter. The fruits are showy black pods displayed in late fall.

Landscape Attributes

Giant Thevetia is an open multi-stemmed evergreen shrub with an upright spreading habit of growth. It lends an extremely fine and delicate texture to the landscape composition which can make it a great accent feature on this basis alone.

This shrub will require occasional maintenance and upkeep, and should only be pruned after flowering to avoid removing any of the current season's flowers. It is a good choice for attracting birds, bees and butterflies to your yard, but is not particularly attractive to deer who tend to leave it alone in favor of tastier treats. It has no significant negative characteristics.

Giant Thevetia is recommended for the following landscape applications;

  • Accent
  • Mass Planting
  • General Garden Use
  • Container Planting

Planting & Growing

Giant Thevetia will grow to be about 15 feet tall at maturity, with a spread of 20 feet. It has a low canopy with a typical clearance of 2 feet from the ground, and is suitable for planting under power lines. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 30 years.

This shrub does best in full sun to partial shade. It is very adaptable to both dry and moist locations, and should do just fine under average home landscape conditions. It is considered to be drought-tolerant, and thus makes an ideal choice for xeriscaping or the moisture-conserving landscape. It is not particular as to soil type or pH, and is able to handle environmental salt. It is highly tolerant of urban pollution and will even thrive in inner city environments. This species is not originally from North America, and parts of it are known to be toxic to humans and animals, so care should be exercised in planting it around children and pets.

Giant Thevetia makes a fine choice for the outdoor landscape, but it is also well-suited for use in outdoor pots and containers. Its large size and upright habit of growth lend it for use as a solitary accent, or in a composition surrounded by smaller plants around the base and those that spill over the edges. It is even sizeable enough that it can be grown alone in a suitable container. Note that when grown in a container, it may not perform exactly as indicated on the tag - this is to be expected. Also note that when growing plants in outdoor containers and baskets, they may require more frequent waterings than they would in the yard or garden.

 
 
Hardiness Zone Plant Height Minimum Sunlight
Characteristics
Accent  Massing  Garden  Container 
Applications
Flowers  Fruit  Foliage Color  Texture  Attracts Wildlife 
Ornamental Features