Clematis 'Jackmanii'

Also known as: Traveller's joy 'Jackmanii'

Clematis 'Jackmanii' is a late large-flowering clematis cultivar with a profusion of dark blue flowers which appear in summer. It was introduced in England in the 1800s and has been wildly popular ever since because it is so vigorous and easy to grow. Gardeners enjoy its low maintenance requirements and its ability to climb trellises and structures.

Scientific classification

Buttercups, poppies and allies

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Toxic to Pets

Toxicity

Perennial

Lifespan

Vine

Plant Type

4 m

Plant Height

1 m

Spread

Green

Leaf Color

5 - 32 ℃

Ideal Temperature

Care Guide for Clematis 'Jackmanii'

Twice per week

Water

Full sun

Sunlight

5 - 32 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Clematis 'Jackmanii' thrives in high humidity and needs consistent moisture with well-hydrated soil. Water twice a week for optimal health. As an outdoor climber, clematis 'Jackmanii' benefits from rainwater, which supports vigorous growth during the active season.

Fertilize: Fertilization for clematis 'Jackmanii' should match size, using nitrogen during growth and phosphate from bud appearance to bloom. Use potassium consistently, applying diluted fertilizer sparingly. During dormancy, add organic fertilizer and compost to enhance soil nutrients and protect roots from frost.

Pruning: Clematis 'Jackmanii' should be pruned before flowering or in late winter to early spring, selectively removing weak branches for better growth. Heavy pruning can stimulate new growth, while excessive summer pruning should be avoided. Proper pruning promotes longer blooming seasons and increases flower quantity over time.

Propagation: Clematis 'Jackmanii' features striking deep violet flowers and is best propagated through semi-hardwood cuttings taken in early summer. Each cutting should have two leaf sets and a node. Use well-draining potting mix, maintain moisture, apply rooting hormone, and harden off before transplanting.

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Common Pests & Diseases

Leaf drooping Aphid Leaf blotch Leaf yellowing Dark blotch Yellow edges Whole leaf withering Mealybug Scale insect Spots Leaf wilting Dark spots Black mold Leaf tip withering Wounds

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