Click on any photo for a larger view.

Interesting Facts

Clematis is divided into three prune groups.  Group 1 is the early-flowering species-ones that bear flowers on the previous year's shoots in winter and early spring.  Group 2 is the midseason, large-flowered cultivars that bear flowers in late spring and early summer on the previous year's growth and in mid to late summer on the current year's growth.  Group 3 is the late, large flowered cultivars, small-flowered cultivars, and late-flowering species, that bear flowers in summer and into early fall on the current year's shoots. 

Add to My Plants
Clematis   Roguchi (Clematis)

'Roguchi' is a newer Japanese Clematis which features unusual 2" bell shaped flowers of intense deep blue/purple with lighter blue recurved petals. Breeder Kazushige Ozawa-sani of Japan is the creator of this Clematis, often regarded as the best of all bell shaped bloomers.  This lax clinger is very fragrant and free flowering. Very long blooming Clematis that can flower from June through September.

Share     Add

Plant Types: Perennial, Vine
Light: Partial Shade to Full Sun
Height: 6 feet to 9 feet
Width: 2 feet
Zones: 4a to 11b
Bloom Color: Blue
Bloom Seasons: Late spring, Early summer, Mid summer, Late summer
Leaf Color: Green
Special Features: All or parts of this plant are poisonous, Deer resistant, Rabbit resistant
Shape: Upright or erect
Fertilizer: Poultry Manure, Steer Manure, Miracle-Gro® Water Soluble All Purpose Plant Food
Want to know where Clematis will thrive in your house or garden? The EasyBloom Plant Sensor will give you a plant's-eye view of your environment to measure soil, sunlight, temperature and humidity. Watch a Video >
Learn More >
Buy EasyBloom >
Plant Care

Clematis is usually propagated through cuttings, but most gardeners will find it much easier to skip this step and directly purchase starter plants. Plant Clematis in the spring at least 18" from any south-facing walls.

For climbing species, make sure to plant the top of the root ball about 3" (8cm) below the soil surface.  Provide strong support, and tie in the plants initially before they start to climb on their own.

Plant Growth:

Clematis includes species of twining leaf-climbers and woody-based herbaceous perennials, found in the N. and S. hemispheres.  During the spring they do best in full sun, but do well with partial shade in summer.

It is important to keep the roots and the base of the plant in the shade and never in direct sun.

Climbing species are useful for covering a wall, arbor, trellis, or pergola.  They can also be grown over large shrubs or small trees.  Herbaceous species work great in a mixed or herbaceous border.


Clematis will bloom abundant flowers in the late spring followed by silvery gray seed heads.

Soil and Irrigation:

Clematis plants prefer porous soil that is well-drained and slightly acidic. Maintain a pH between 5.8 and 6.5: any higher and the plant is susceptible to yellowing.

Provide plants with a late winter mulch of compost or well-rotted manure, but avoid the crown when doing so.


Fertilize plant in the spring. Use 150 ppm 20-20-20 or 20-15-20 concentrations. Slow release fertilizers are not advised.


Prune Group 3 - Prune lightly above the new leaf buds in early spring and remove any dead or weak stems. Clematis 'Roguchi' flowers on the new season's growth.


Clematis is susceptible to Clematis wilt, aphids, whiteflies, spider mites, thrips, botrytis, and fusarium. Keeping foliage dry will help stave off disease.