Aristolochia sempervirens

Aristolochia sempervirens

Birthwort

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 flower in April

Plant does flower in May

Plant does flower in June

Plant does not flower in July

Plant does not flower in August

Plant does not flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

  • Botanical name: Aristolochia sempervirens
  • Common name: Birthwort
  • Family: Aristolochiaceae
  • Plant Type: Climber, Evergreen
Flower colour:

Purple

Yellow

Foliage colour:

Green

Aristolochia sempervirens is a fantastic evergreen woody climber with glossy, heart-shaped leaves. Throughout spring and early summer its curved, tubular, burgundy flowers use their hairy yellow throat to catch and trap insects temporarily to aid pollination. Half hardy, it’s a great talking point and is a good choice for growing up a sheltered trellis or wall. It may also be used as groundcover.

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Grow Aristolochia sempervirens in a sheltered site in moist but well-drained soil in full sun to partial shade. Take semi-ripe cuttings or propagate from seed in summer to insure against winter losses. Cut back in spring if necessary.

How to grow Aristolochia sempervirens

  • Plant size

    8m height

    5m spread

  • Aspect

    South facing, west facing

  • Position in border

    Back

  • Sun exposure: Full sun, dappled shade, partial shade
  • Hardiness: Half hardy
  • Soil type: Well drained / light / sandy / chalky / alkaline / acidic

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
Sow
Sow

Do not Sow in January

Do not Sow in February

Do Sow in March

Do Sow in April

Do Sow in May

Do not Sow in June

Do not Sow in July

Do not Sow in August

Do not Sow in September

Do not Sow in October

Do not Sow in November

Do not Sow in December

Plant
Plant

Do not Plant in January

Do not Plant in February

Do not Plant in March

Do not Plant in April

Do Plant in May

Do Plant in June

Do not Plant in July

Do not Plant in August

Do not Plant in September

Do not Plant in October

Do not Plant in November

Do not Plant in December

Flowers
Flowers

Plant does not flower in January

Plant does not flower in February

Plant does not flower in March

Plant does flower in April

Plant does flower in May

Plant does flower in June

Plant does not flower in July

Plant does not flower in August

Plant does not flower in September

Plant does not flower in October

Plant does not flower in November

Plant does not flower in December

Take cuttings
Take cuttings

Do not Take cuttings in January

Do not Take cuttings in February

Do not Take cuttings in March

Do not Take cuttings in April

Do not Take cuttings in May

Do Take cuttings in June

Do Take cuttings in July

Do Take cuttings in August

Do not Take cuttings in September

Do not Take cuttings in October

Do not Take cuttings in November

Do not Take cuttings in December

Prune
Prune

Do not Prune in January

Do not Prune in February

Do Prune in March

Do 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

Collect seeds
Collect seeds

Do not Collect seeds in January

Do not Collect seeds in February

Do not Collect seeds in March

Do not Collect seeds in April

Do not Collect seeds in May

Do not Collect seeds in June

Do Collect seeds in July

Do Collect seeds in August

Do not Collect seeds in September

Do not Collect seeds in October

Do not Collect seeds in November

Do not Collect seeds in December

Aristolochia sempervirens and wildlife

Aristolochia sempervirens has no particular known value to wildlife in the UK.

Is Aristolochia sempervirens poisonous?

Aristolochia sempervirens 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