Clematis Jackmanii

Desiring to add dimension and color to your yard, deck, patio, or street-side mailbox? Clematis Jackmanii is the perfect purple solution. Large, 5-inch, violet florets rest atop shamrock-green foliage that covers this easy-to-grow, fast-growing climber. This vine can be trained to grow vertically up a trellis, fence post, or pole. Blooming throughout the summer into early fall, this versatile perennial, also known as Clematis x jackmanii and Jackman's Clematis, is cold hardy in zones 4 - 8. Pollinators such as butterflies, hummingbirds and bees will hover around this showy flowering vine all season long.

With its ancestors found all over the world, this abundantly flowering plant can survive in a wide range of climates. With its climbing growth habit, it easily adds height, color, and texture to wherever it is planted. A low-maintenance perennial, Clematis Jackmanii is the ideal choice for a busy person who wants to quickly upgrade a landscape without incurring a lot of fuss. Adding another A+ to its report card, this deciduous cultivar is both deer and rabbit resistant. Its large, four-sepaled blooms will still be there long after the local critters have sauntered by. 

Clematis Jackmanii Care

While Clematis Jackmanii likes to “climb” in full sun, it prefers its roots to rest in cool soil. Plant it in moist, loamy, roughly neutral, well-draining soil with a layer of mulch to shade the roots from the sun. If the soil is compacted or lacks sufficient nutrients, amend it by adding organic compost. Provide this perennial with a support such as a trellis, pole, or post to climb. Possessing average watering needs, make sure Clematis Jackmanii gets about one inch of water weekly, and feed this fast-growing plant a balanced (10-10-10 NPK) fertilizer monthly from April to September.

To overwinter, cover the soil with a few inches of mulch to insulate the roots. Since Clematis Jackmanii blooms on new wood, cut back old growth in early spring.

Clematis Jackmanii Spacing

Space Clematis Jackmanii 4 to 6 feet apart whether grown en masse or individually. This easy-to-grow climber does well growing up a trellis or post. In a container combination, this perennial makes a superb thriller. Examples of superb companion plants include sweet alyssum, butterfly bush, and roses.

Other Clematis Jackmanii Questions

Are Clematis Jackmanii Evergreen?

No, these flowering vines are deciduous and not evergreen. Which means the leaves fall off each fall/winter around the first hard freeze. Each spring the plant will perennially grow new leaves.

What is the difference Between Clematis Jackmanii and Jackmanii Superba?

Jackmanii Superba is a new and improved version of the original clematis Jackmanii. The main differences are that Superba has slightly larger flowers and blooms more profusely than the original.

Do Jackmanii Clematis Come In Bulbs Or as Plants?

Clematis Jackmanii Vines do not grow as bulbs. These will typically be sold as small plants in containers about 3.5 inches tall or slightly larger 1 gallon containers. We are not aware of any clematis being grown as bulbs.

How long does Clematis Jackmanii bloom?

Clematis jackmanii will bloom from early summer and re-bloom until the first frost. In late fall the flowers will change to pretty silky seedheads.

Are Clematis Jackmanii Invasive?

The parent species is native to China and some clematis can be considered invasive. However, this plant is not considered invasive to anywhere that we are aware of.

Are Clematis Jackmanii Poisonous?

Yes! These plants have a high poison severity if any part of the plant is ingested, including the leaves, flowers, roots, sap, or seeds. Common symptoms include severe pain in the mouth, skin irritation, ulcers, salivating, vomiting, diarrhea. The toxin in the plant is protoanemonin.