Blue Velvet St. John's Wort
Hypericum 'Blue Velvet'
Blue Velvet St. John's Wort flowers
(Photo courtesy of NetPS Plant Finder)
Height: 24 inches
Spread: 18 inches
Hardiness Zone: 4
Lovely silvery blue-green foliage is fragrant and fine textured with bright yellow buttercup flowers held over top in summer; bright red berries are an added bonus in fall; use this as a small color accent in the garden
Blue Velvet St. John's Wort has masses of beautiful yellow buttercup flowers at the ends of the branches from late spring to mid summer, which are most effective when planted in groupings. The flowers are excellent for cutting. It has attractive bluish-green deciduous foliage. The fragrant narrow leaves are highly ornamental but do not develop any appreciable fall color. It produces red berries from late summer to mid fall.
Blue Velvet St. John's Wort is a multi-stemmed deciduous shrub with an upright spreading habit of growth. Its relatively fine texture sets it apart from other landscape plants with less refined 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.
Blue Velvet St. John's Wort is recommended for the following landscape applications;
- Mass Planting
- General Garden Use
- Container Planting
Planting & Growing
Blue Velvet St. John's Wort will grow to be about 24 inches tall at maturity, with a spread of 18 inches. 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 prefers dry to average moisture levels with very well-drained soil, and will often die in 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 not particular as to soil type or pH. 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 particular variety is an interspecific hybrid. 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.
Blue Velvet 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. 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.