About
Aristolochia californica is a woody, deciduous vine that may struggle to survive the colder temperatures in the UK. Its leaves are heart-shaped and a medium green. In winter and spring, it produces flowers that measure approximately 2-3 cm in length, displaying a combination of cream and burgundy hues. After flowering, the plant develops green seed capsules that are winged.
About the genus
Aristolochia includes both shrubs and herbaceous perennials, with many species exhibiting climbing habits. The leaves are typically heart-shaped or ovate. The flowers are characterized by an S-shaped calyx tube and lack petals, presenting in colors such as white, yellow, brown, or maroon, often featuring mottled patterns.
Growing conditions
- Sunlight
- Partial shade
- Soil type
- Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- East-facing, North-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H3
Plant details
- Plant type
- Climber Wall Shrub
- Habit
- Climbing, Spreading branched
- Foliage
- Deciduous
- Height
- 4-8 metres
- Spread
- 4-8 metres
- Time to full height
- 5-10 years
- Native to
- California
- Toxicity
- TOXIC if eaten. Wear gloves and other protective equipment when handling Pets (dogs): TOXIC if eaten - see the HTA guide to potentially harmful plants for further information and useful contact numbers
Care notes
- Cultivation
- Can be trained to climb a trellis or structure. Requires shade and ideally a frost-free environment
- Pruning
- No pruning required. If pruning is necessary to restrict to allocated space, then prune in winter
- Propagation
- Propagate by seed or by softwood or semi-ripe cuttings
- Pest resistance
- Generally pest-free
- Disease resistance
- May be susceptible to honey fungus in gardens where it is present but insufficient data to determine degree of susceptibility