Dutchman's pipe
Aristolochia macrophylla
Also called Aristolochia and Pipevine
Garden plant · ClimbersGROWN FOR THE LEAVES, which overlap into a solid green curtain and will screen a porch in one season. The flowers are small, bent like a saxophone and hidden underneath — you have to lift a leaf to find one.
Care at a glance
- Ease
- Medium
- Water
- Every 8 daysKeep it moist — water at the first hint of dryness — don't wait for a dry pot.
- Light
- Partial shade
- Feed
- Not needed
- Humidity
- Average
- Hardiness
- Hardy — a very cold winter RHS H6, to -20°C
- Size
- 8 m tall · 3 m across
- Lifecycle
- Perennial
- Origin
- Eastern North America
Is it safe for pets and people?
PetsNothing recorded against it
No animal-poison authority lists this plant either way.
PeopleHarmful if eaten
The whole plant, stems and roots most of all.
HandlingTake care handling it
Never use any part of it in a preparation, whatever a herbal source says. Wash hands after pruning.
Checked against ASPCA and RHS on 2026-09-22.
A guide, not veterinary or medical advice. If a pet or a person has eaten a plant and you are worried, call your vet or doctor now — don’t wait for signs to appear. Spotted a mistake? Tell us.