Photo by Melody

PlantFiles: Watson's Dutchman's Pipe
Aristolochia watsonii

Family: Aristolochiaceae
Genus: Aristolochia (a-ris-toh-LOH-kee-uh) (Info)
Species: watsonii (wat-SON-ee-eye) (Info)

8 members have or want this plant for trade.

Vines and Climbers

24-36 in. (60-90 cm)

6-8 ft. (1.8-2.4 m)

USDA Zone 9a: to -6.6 C (20 F)

Sun Exposure:
Full Sun
Sun to Partial Shade
Light Shade

Parts of plant are poisonous if ingested

Bloom Color:

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall

Unknown - Tell us

Other details:
Drought-tolerant; suitable for xeriscaping

Soil pH requirements:
6.6 to 7.5 (neutral)

Patent Information:

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds

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1 positive
No neutrals
No negatives

Gardeners' Notes:

Positive syswriter On Aug 22, 2007, syswriter from Oracle, AZ wrote:

Another common name for this plant is Desert Pipevine. It is a perennial and comes back in the same location year after year regardless of winter cold, summer heat, or drought.

The flowers are short-lived, possibly one or two days. The leaves are narrow, triangular or arrow-head shaped, green, turning purple possibly due to age or full sun. The plant, often very low to the ground, can be hard to spot. The acorn-sized seed capsules can be the easiest part to see at the end of summer.

This plant is a host to the Pipevine Swallowtail caterpillar. The caterpillar is orange and black, forms a yellow chrysalis, and becomes a 4" wide black butterfly.


This plant has been said to grow in the following regions:

Oracle, Arizona
Tucson, Arizona
Ocean Springs, Mississippi
Rodeo, New Mexico
Houston, Texas

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