Aristolochia clematitis   L.

trivial name

size

habit

inflorescence

exposure

temperature range

humidity

water requirements

soil pH

propagation

difficulty

Common Birthwort

approx. 30-70 cm

perennial, stoloniferous, erect

yellow with a pale throat

full sun

20-45 °C in summer, hardy to -20 °C

> 30 %

very tolerant, constant slight humidity beneficial

neutral

seeds (stratification period up to 2 years), stolons/cuttings

1 (1 = very easy, 5 = extremely difficult)


Despite the beautiful, tiny flowers appearing in clusters of up to 10 per leaf axil I heavily disadvice growing this plant in open soil/gardens.

One of the very few Aristolochia capable of becoming troublesome weeds, this plant will spread quickly underground by means of the fleshy, rhizomatose roots.

If broken, a new plant will emerge from each fragment the next season so the best way to control this species surely is planting it in a container.