How to plant and care for Clematis (Jackmanii)

Clematis 'Jackmanii'

🌸 Flower 🔁 Perennial

The classic clematis: masses of velvety deep-purple flowers from midsummer. Easy to prune — just cut it all down in late winter.

When to plant and care for it

JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

Prune

Timed for a typical UK garden (last frost mid-April). The app uses your own town's frost dates.

On planting day
Plant
Plant 8 cm deeper than it was in its pot (it helps recovery from clematis wilt), 30 cm from the wall, and shade the roots with a slab or low plants.
0–1 days after “Plant”
Water In Well
Give a full can of water, then keep moist for the first few weeks while roots establish.
7–14 days after “Water In Well”
Mulch Around the Base
Spread 5 cm of compost or bark around the plant, keeping it off the stems.

February
Cut Back Hard
Cut all stems down to a pair of fat buds about 30 cm above the ground.
March
Feed and Mulch
Give a general feed and mulch the roots (keep them cool and shaded).
April
Tie In Young Shoots
Tie the fast-growing new shoots to the support every week or two.
July
In Flower
Covered in purple flowers — take a photo. Give a high-potash feed every two weeks while flowering.