Clematis 'Jackmanii'

Clematis ‘Jackmanii’

Jackman's clematis

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does not flower in June

Plant does flower in July

Plant does flower in August

Plant does flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

At its best
At its best

Plant is not at its best in January

Plant is not at its best in February

Plant is not at its best in March

Plant is not at its best in April

Plant is not at its best in May

Plant is not at its best in June

Plant is at its best in July

Plant is at its best in August

Plant is at its best in September

Plant is not at its best in October

Plant is not at its best in November

Plant is not at its best in December

  • Botanical name: Clematis 'Jackmanii'
  • Common name: Jackman's clematis
  • Family: Ranunculaceae
  • Plant Type: Climber, Deciduous
Flower colour:

Purple

Foliage colour:

Green

Clematis ‘Jackmanii’ is a vigorous climber that will produce an abundance of large, striking, dark purple flowers from July to September. It’s deciduous so will lose its foliage in autumn, and new growth will appear the following spring. It’s well suited to growing in a container and can be trained to grow up a wall, fence or trellis.

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Grow Clematis ‘Jackmanii’ in moist but well-drained soil or compost, in full sun to partial shade. Try to keep the roots cool, if they are in direct sun then provide shade with other plants, or with a cover. Clematis ‘Jackmanii’ is a Group 3 clematis, which means it requires regular pruning for repeat flowering because the flowers grow only on the current year’s growth. Prune in late winter, when the buds are starting to emerge.

Advice on buying Clematis ‘Jackmanii’

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  • Clematis ‘Jackmanii’ may be available from your local garden centre or nursery, but you will have more options online
  • Always check plants for signs of damage or disease before planting

Where to buy Clematis ‘Jackmanii’

How to grow Clematis 'Jackmanii'

  • Plant size

    4m height

    100cm spread

  • Aspect

    North facing, south facing, east facing, west facing

  • Sun exposure: Full shade, partial shade
  • Hardiness: Hardy
  • Soil type: Acidic / chalky / alkaline / clay / heavy / moist / well drained / light / sandy
  • Plant care: Pruning group 3 clematis

Plant calendar

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does not flower in April

Plant does not flower in May

Plant does not flower in June

Plant does flower in July

Plant does flower in August

Plant does flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

Prune
Prune

Do not Prune in January

Do Prune in February

Do Prune in March

Do not Prune in April

Do not Prune in May

Do not Prune in June

Do not Prune in July

Do not Prune in August

Do not Prune in September

Do not Prune in October

Do not Prune in November

Do not Prune in December

At its best
At its best

Plant is not at its best in January

Plant is not at its best in February

Plant is not at its best in March

Plant is not at its best in April

Plant is not at its best in May

Plant is not at its best in June

Plant is at its best in July

Plant is at its best in August

Plant is at its best in September

Plant is not at its best in October

Plant is not at its best in November

Plant is not at its best in December

Clematis 'Jackmanii' and wildlife

Clematis 'Jackmanii' is known for attracting beneficial insects and other pollinators.

Does not attract Bees

Attractive to Beneficial insects

Does not attract Birds

Does not attract Butterflies​/​Moths

Attractive to Other pollinators

Is Clematis 'Jackmanii' poisonous?

Clematis 'Jackmanii' has no toxic effects reported.

No reported toxicity to:

No reported toxicity to Birds

No reported toxicity to Cats

No reported toxicity to Dogs

No reported toxicity to Horses

No reported toxicity to Livestock

No reported toxicity to People