Caryopteris incana 'Weeping Form'
Blue Spirea, Blue-Mist Shrub
 
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Family: Verbena Family (Verbenaceae)
Native Habitat: China, Japan

Here's a great little Caryopteris that's extremely rare in the trade. In fact, as far as we are aware we're the only nursery in the U.S. growing this plant. We received it some years ago from our friends at Buckland Plants, Whinnieliggate, Scotland and it's proven to be a real gem. It's unique among Caryopteris in several ways: mainly in form and size. Considering the variety name, you'd be right to guess it grows in a distinctive weeping form unlike any other Blue Spirea we know. It's also a large grower for a Caryopteris, reaching 4 to 5 ft. in height. An extremely heavy bloomer, the lavender-blue flowers begin in late summer and continue until frost. This is a terrific butterfly plant. It is literally covered with butterflies on sunny summer and fall days.

Here in Zone 5, Caryopteris is sometimes a "die-back" shrub, depending upon the severity of the winter. The branches will die back to the crown in our coldest winters. Since it quickly regrows and blooms only on new wood, simply prune back to live wood in spring, stand back, and enjoy the coming show.

Ornamental Characteristics: Shiny green leaves that are fragrant when crushed. Clouds of lavender-blue flowers for many weeks beginning in late summer.
Habit & Growth Rate: Lovely weeping form. Fast growing to 4 or 5 ft. high and 3 to 4 ft. wide.
Landscape Uses: Shrub border, mixed border, foundation plantings. Deer resistant. Attracts butterflies.
Hardiness: Zone 5 to 9. In zone 5 sometimes behaves as a "die back" shrub and will die down to the crown in severe winters but will quickly regrow in spring.
Culture: Easy. Full sun to light shade. Average garden soil. Prune down to live wood in spring. Blooms only on new wood.