Trillium Enthusiasts Gather for Annual Conference in Central Otago

The annual gathering of the New Zealand Trillium Group is set to take place in Central Otago on the evening of October 31, 2025. This year’s event marks a return to the region after eight years, bringing together over 140 members, with approximately 90 attendees expected from across the South Island and the North Island. The conference will focus on sharing knowledge about the cultivation of trilliums, a unique genus of woodland plants that thrive under specific conditions.

Trilliums are native to the northern hemisphere, particularly in areas of North America and Japan, and are known for their preference for shaded environments. In New Zealand, growers strive to replicate these woodland conditions. Central Otago, while not a typical habitat for these plants, can support their growth if adequate shade and moisture are provided.

Exploring Cultivation Techniques

Participants at the conference will have the opportunity to learn about the challenges and techniques associated with growing trilliums. Clint Callens, a renowned expert from Belgium, will deliver a keynote address on the cultivation of woodland plants in his garden. The event will also honor the late Steve Newell, a passionate member of the New Zealand Trillium Group, whose contributions to plant knowledge are celebrated.

The agenda includes visits to 10-12 local gardens in the Teviot Valley and Alexandra, where attendees can observe diverse species such as the Trillium kurabashi, known for its large purple flowers, and the smaller Pseudotrillium rivale, or brook wakerobin. On Saturday evening, the main conference event will feature plant sales, raffles, dinner, and a presentation by Dave Toole, who will share his insights on growing trilliums from seed.

Growing trilliums requires patience, as it can take up to eight years for seedlings to reach flowering size. While some members have had success with certain varieties, others find that the delicate balance of conditions can lead to challenges. For instance, the double-flowering trillium is a rare cultivar that does not occur naturally and is known to be particularly difficult to maintain.

Community Engagement and Knowledge Sharing

The conference not only serves as a platform for learning but also fosters a sense of community among trillium enthusiasts. Members are encouraged to share their experiences and knowledge, which is vital for the successful cultivation of these unique plants. The gathering is exclusive to members of the New Zealand Trillium Group, but those interested in joining can contact Lynne and Bob Croy via email at [email protected].

As the event approaches, excitement builds among attendees, each bringing their own stories and favorite varieties. The New Zealand Trillium Group continues to thrive as a resource for gardeners dedicated to understanding and cultivating these enchanting woodland plants.