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Autumn Blaze St. John's Wort*

Hypericum androsaemum 'Autumn Blaze'

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Autumn Blaze St. John's Wort (Hypericum androsaemum 'Autumn Blaze') at Alsip Home and Nursery

Autumn Blaze St. John's Wort flowers

Autumn Blaze St. John's Wort flowers

(Photo courtesy of NetPS Plant Finder)

* This is a "special order" plant - contact store for details

Height:  3 feet

Spread:  3 feet

Sunlight:  full sun  partial shade 

Hardiness Zone:  4


Bright yellow buttercups with bushy stamens rise from large oval leaves that are bluish-green and tinged with rich purple, foliage is scented when crushed; rich red berries fade to black in fall; widely adaptable but thrives in moist, well-drained soil

Ornamental Features

Autumn Blaze St. John's Wort has masses of beautiful yellow buttercup flowers at the ends of the branches from late summer to early fall, which are most effective when planted in groupings. The flowers are excellent for cutting. It has attractive deep purple-tipped bluish-green foliage which emerges deep purple in spring. The large fragrant oval leaves are highly ornamental but do not develop any appreciable fall color. It features an abundance of magnificent dark red berries from mid summer to mid fall.

Landscape Attributes

Autumn Blaze St. John's Wort is a multi-stemmed deciduous shrub with an upright spreading habit of growth. Its relatively coarse texture can be used to stand it apart from other landscape plants with finer foliage.

This shrub will require occasional maintenance and upkeep, and is best pruned in late winter once the threat of extreme cold has passed. It has no significant negative characteristics.

Autumn Blaze St. John's Wort is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use
  • Groundcover
  • Container Planting

Planting & Growing

Autumn Blaze St. John's Wort will grow to be about 3 feet tall at maturity, with a spread of 3 feet. It tends to fill out right to the ground and therefore doesn't necessarily require facer plants in front. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 5 years.

This shrub does best in full sun to partial shade. It is very adaptable to both dry and moist growing conditions, but will not tolerate any standing water. It is considered to be drought-tolerant, and thus makes an ideal choice for a low-water garden or xeriscape application. It is particular about its soil conditions, with a strong preference for rich, alkaline soils. It is highly tolerant of urban pollution and will even thrive in inner city environments. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder microclimates. This is a selected variety of a species not originally from North America. It can be propagated by division; however, as a cultivated variety, be aware that it may be subject to certain restrictions or prohibitions on propagation.

Autumn Blaze St. John's Wort makes a fine choice for the outdoor landscape, but it is also well-suited for use in outdoor pots and containers. With its upright habit of growth, it is best suited for use as a 'thriller' in the 'spiller-thriller-filler' container combination; plant it near the center of the pot, surrounded by smaller plants and those that spill over the edges. 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.


* This is a "special order" plant - contact store for details

Hardiness Zone Plant Height Minimum Sunlight Soil pH Preference
Massing  Garden  Groundcover  Container 
Flowers  Fruit  Foliage Color 
Ornamental Features