approx. 15-40 cm
perennial, stoloniferous, erect
brownish with ornamentations
20-45 °C in summer, hardy to -10 °C
> 30 %
only to be watered during the growth period, avoid constant humidity!
seeds (stratification period up to 2 years)
2 (1 = very easy, 5 = extremely difficult)
Aristolochia pistolochia seems to be cultivated not uncommonly yet never propagated to a larger extent.
Quite a pity this lovely and rather easy-to-cultivate dwarf species is capable of proliferate via seeds only, which can take quite a time before germination occurs.
Interestingly I observed on multiple occasions seed batches germinate very irregularly, but as soon as the time's come all the seeds will pop up within a single day or two. It seems the embryos share kind of an internal clock ...