Dutchman'S-Pipe
Isotrema macrophyllum
Last reviewed: August 2026
Toxicity unknown
Dutchman'S-Pipe (Isotrema macrophyllum) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
part shade
Water
medium
Size
96"–240" H × 24"–72" W
Bloom
Jun, Jul, Aug
Native to
AL, CT, GA, KY and 9 more states
Pollinators
bees, butterflies
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
Big-leaf heartleaf is a vigorous native vine with enormous heart-shaped leaves that can reach over a foot wide. It produces unusual curved, pipe-shaped flowers in summer that are hidden beneath the foliage. This fast-growing climber needs sturdy support and can quickly cover large areas.
In an HOA neighborhood
Dutchman'S-Pipe takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Extremely vigorous growth can appear uncontrolled
- Very large leaves may look too wild for formal landscapes
- Can overwhelm structures and nearby plants
Wildlife value
The flowers attract bees and serve as the primary host plant for pipevine swallowtail butterfly caterpillars. The large leaves provide excellent cover for birds and small wildlife.
Common questions
- How much sun does Dutchman'S-Pipe need?
- Dutchman'S-Pipe grows best in part shade conditions.
- When does Dutchman'S-Pipe bloom?
- Dutchman'S-Pipe blooms in June, July, and August.
- Where is Dutchman'S-Pipe native?
- Dutchman'S-Pipe (Isotrema macrophyllum) is native to AL, CT, GA, KY and 9 more states, per the World Checklist of Vascular Plants (Kew).
- What pollinators does Dutchman'S-Pipe attract?
- Dutchman'S-Pipe draws bees and butterflies.
- Is Dutchman'S-Pipe HOA-friendly?
- Dutchman'S-Pipe takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
If something looks wrong
Common plant problems, and what to check first
These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.
- It is dying right after planting
- Leaves turning yellow
- Wilting even though I watered it
- Brown crispy leaf tips
- Bugs on the plant
Ready to grow Dutchman'S-Pipe? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Planning a bed around it? Start a free plan with this plant
Not sure where to start? Take the 2-minute yard quiz