Ulm botanical garden festival pairs bonsai with biodiversity exhibit

Bonsai will sit inside a much bigger public invitation at the University of Ulm Botanical Garden, where a free summer festival and the opening of the exhibition Wild Diversity in the Garden will draw families, plant fans, and casual visitors to Hans-Krebs-Weg 8 in Ulm. The program begins Sunday, June 21, at 2 p.m., and the bonsai display will appear alongside sales and presentation stands from the Donau-Iller Orchid Society, the Cactus Society, and the Society for Carnivorous Plants.

That mix is the point. The garden is using the festival to turn a specialist plant venue into a broad horticultural meeting place, with bonsai helping bridge the gap between artful miniature cultivation and the larger theme of biodiversity. Visitors will see how a bonsai depends on long-term training, careful watering, and patient design, even as the exhibition around it explains how living systems in a garden work together.

Wild Diversity in the Garden is built to make that ecosystem visible. Information boards will focus on meadows, ponds, fungi, microorganisms, and other hidden life that supports a healthy garden, while practical sheets will suggest ways home gardeners can create wild corners and habitat for biodiversity. The university has framed the 2026 garden season around that same idea, with both a Botanical Garden Week and a Biodiversity Week tied to the theme of wild diversity.

The festival itself will stretch beyond display tables. Guided tours are planned for the greenhouses and the medicinal herb garden, children will have their own program, and the Talking Tree Berti will get a new look. Refreshments will come from the Friends of the Botanical Garden and the Botanikum beer garden, giving the day the feel of a full campus outing rather than a single-subject show.

For Ulm’s bonsai crowd, the timing is telling. A June 7 Azalea Bonsai Workshop was already listed in the garden calendar, and the university’s 2025 summer festival also put bonsai on the poster with Venus flytraps. That history suggests bonsai is not being added as decoration, but as a familiar part of a garden that keeps folding specialist cultivation into public education.

Tourismus Ulm/Neu-Ulm describes the botanical garden as the university’s central scientific facility, with collections in the greenhouse, outdoors, and herbarium. That makes the festival’s blend of bonsai, biodiversity, and family programming feel especially natural: a place built for research will open its gates to show how trees, habitats, and miniature landscapes belong in the same conversation.