Greater Des Moines Botanical Garden
A geodesic conservatory and outdoor gardens make plant adaptation visible across tropical and Midwestern conditions.
Artwork inspired by Eve Drewelowe
The Garden’s 80-foot-high, 150-foot-wide geodesic conservatory opened in December 1979 and is built from 665 molded Plexiglas panels. Inside, more than 1,000 tropical taxa make leaf size, water storage, climbing strategies, pollination, and competition for light visible at close range—even during an Iowa winter.
Outside, seven acres of newer gardens turn the comparison toward Midwestern seasons and riverfront conditions. Rain gardens, conifers, roses, a dry meadow, play spaces, and designed views toward downtown show horticulture as both ecological problem-solving and visual composition. The adjacent Robert D. Ray Asian Garden is free and remains open beyond the ticketed Garden’s hours.
- Landmark
- Geodesic conservatory
- Setting
- Des Moines, Iowa, United States
- Admission
- Free general admission
Quick guide
- Compare
- Tropical adaptation and Iowa seasonality
- Check
- Events can change access
Make the visit count
- Start here
- The conservatory’s warm, humid collection contrasts with outdoor plantings designed for Iowa seasons and Des Moines riverfront conditions.
- Plan
- Start under the dome, then revisit one plant trait outdoors.
- Trace one adaptation
- Follow a single trait—leaf size, water storage, climbing habit, or dormancy—from a tropical specimen to an outdoor Iowa planting and ask what environmental pressure changed.
- Finish outside
- Use the rain garden, dry meadow, conifers, and riverfront views to see how designed landscapes manage water and seasonality as well as color and form.
Good to know
The paid campus has one geodesic conservatory dome—not a second small dome. Only the separate Robert D. Ray Asian Garden is free, from 6 a.m.–10 p.m. Outside food is prohibited; refillable water bottles are welcome. Follow the garden’s arrival page for the best approach during city street work.
Notice these
- Geodesic conservatory
- Tropical adaptation and Iowa seasonality
- Events can change access