Jackmanii Clematis
The classic large-flowered clematis since 1858. Deep violet-purple blooms cover the vine midsummer.
Dangerous to cats
Toxic to cats and dogs. The bitter taste usually stops them before they eat much, so serious cases are uncommon.
Handle with care
The sap irritates skin and can raise a rash or blisters on people who react to it. Wear gloves when pruning, and wash your hands afterwards.
Bloom Season
Jun - Sep
JFMAMJJASOND
Sun Requirements
○ Full Sun6+ hours direct
◐ Part Sun4-6 hours
Water Needs
Moderate
Regular watering
Size & Zones
6-10' tall
USDA Zones 4-8
Bloom Colors
Purple
Traits
✿ Pollinator Friendly✂ Cut Flower
Soil
Loam
Where to buy
Find Jackmanii Clematis plants on Amazon.
Shop on Amazon →As an Amazon Associate, What's Bloomin' earns from qualifying purchases. Prices and availability are set by Amazon.
Other Clematis Varieties
Nelly Moser
Pale pink petals with a darker pink bar down the center.
Sweet Autumn
Explosive late-summer bloom of thousands of tiny fragrant white flowers.
The President
Big, rich violet-blue flowers with silvery reverse petals rebloom through the season on a vigorous, reliable plant.
Ernest Markham
Magenta-red flowers with brown anthers that bloom late when others have faded.
Hagley Hybrid
Soft shell-pink flowers with a hint of mauve that fade beautifully in part shade and bloom reliably all summer.
Polish Spirit
Deep violet-purple flowers cover a vigorous plant from midsummer to fall.
Henryi
Large, pure white flowers with dark brown anthers rebloom in fall.
Pairs Well With
You Might Also Like
Explore More
The Garden Newsletter
What's growing, what's blooming, what's worth planting.
For gardeners who like to stay ahead.