7:00 pm - 9:00 pm Denver Botanic Gardens: Invitation to Ikebana – October 21 October 21 @ 7:00 pm - 9:00 pm Denver Botanic Gardens: Invitation to Ikebana – October 21 Ikebana is an expression of our respect and appreciation towards nature. We observe life through the arrangement of plants. During each class, participants receive hands-on instruction to put together an arrangement to take home.