Greenhouse Calliandra haematocephela in the Main Exhibition Greenhouse Photo: Jardin botanique de Montréal (Gilles Murray) Main Exhibition Greenhouse decorated for the Great Pumpkin Ball Photo: Jardin botanique de Montréal (Lise Servant) Rediscover the exhibition of pumpkins decorated by members of the public Photo: Jardin botanique de Montréal (Claude Lafond) Butterflies Go Free at the Main Exhibition Greenhouse Photo: Jardin botanique de Montréal (Lise Servant) Butterflies Go Free at the Main Exhibition Greenhouse Photo: Claude Lafond Butterflies Go Free 2013 (Idea leucone) Photo: Espace pour la vie (André Sarrazin) Scarlet eggplant (Solanum aethiopicum) Photo: Jardin botanique de Montréal (Pascale Maynard) OngletsDescription The vast, two-tiered Main Exhibition Greenhouse features a babbling waterfall. The floral decor in the Main Exhibition Greenhouse is changed at various times throughout the year to offer visitors seasonal shows. In late winter and early spring, the Butterflies Go Free event draws thousands of visitors of all ages. In October, to celebrate Halloween, children and the young at heart are invited to bring their scariest (or funniest) jack-o'-lanterns to the Great Pumpkin Ball, directed by Esmeralda, the friendliest and greenest witch of all. Area648 m²TemperatureThe temperature in the greenhouse is adjusted to meet the needs of the plants on display in each season. It can reach 29°C during the Butterflies Go Free event. Map Shade garden Flowery Brook and Lilacs Frédéric Back Tree Pavilion Aquatic Garden Reception Gardens Peace Garden Courtyard of the Senses Chinese Garden Youth Gardens Alpine Garden Japanese Garden Leslie Hancock Garden Shrub Garden Toxic plantsMedicinal plantsMonastery GardenQuébec Corner Garden of Innovations Economic (Useful) Plant Garden Perennial Garden Arboretum Rose Garden First Nations Garden ExploreWorth exploring Major events take place in the Main Exhibition Greenhouse of the Botanical Garden: Butterflies Go Free: two experiences, with creatures active by day and by night. Learn all about differences between moths and butterflies. The Great Pumpkin Ball: admire the exhibition of pumpkins decorated by members of the public. Did you know?Did you know? Butterflies Go Free Education and conservation are central to the Insectarium's mission. All the butterfly farms from which the chrysalises and cocoons are obtained follow strict ethical rules. This helps ensure sustainable development in the human communities that raise tropical butterflies and in the forests nearby.