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PlantSnap
Plant Care
Japanese clematis
(Clematis patens)
Also Known As
Japanese clematis, Patens clematis, Blue clematis, Clematis montana
About This Plant
Clematis patens is a woody vine that is native to Japan. It is a deciduous plant that can grow up to 20 feet (6 meters) in length. The plant produces showy, large, violet-blue flowers with yellow stamens that bloom from late spring to early autumn.
Plant Care Instructions
Outdoor Size Range
10-20 feet (3-6 meters)
Light Requirements
Clematis patens prefers full sun to partial shade. It needs at least 6 hours of direct sunlight per day.
Humidity Needs
Clematis patens prefers high humidity levels. You can increase humidity by misting the plant with water or placing a tray of water near the plant.
Fertilizing Schedule
Fertilize the plant with a balanced fertilizer once a month during the growing season. Do not fertilize the plant during the dormant season.
Pruning Guidelines
Prune the plant in late winter or early spring before new growth appears. Cut back the previous year's growth to 6-8 inches (15-20 cm) above the ground.
Common Pests and Diseases
Common pests for Clematis patens include aphids, spider mites, and slugs. Diseases that affect the plant include powdery mildew and leaf spot.
Indoor Size Range
Not suitable for indoor growth
Watering Schedule
The plant needs regular watering during the growing season. It requires moist but well-drained soil. Do not let the soil dry out completely.
Temperature Range
The plant prefers cool temperatures between 60-75°F (15-24°C). Protect it from extreme heat and frost.
Growing Season
The growing season for Clematis patens is from late spring to early autumn.
Growing Difficulty Level
Clematis patens is moderately difficult to grow. It requires specific growing conditions and regular maintenance.
USDA Hardiness Zones
Clematis patens is hardy in USDA zones 4-8.
Did You Know?
Clematis patens is also known as the 'Queen of Climbers' due to its ability to climb and cover large areas with its showy flowers.
