历史沿革与机构定位
加拿大皇家植物园（Royal Botanical Gardens，简称 RBG）坐落于加拿大安大略省伯灵顿市与汉密尔顿市交界处，环绕安大略湖西端，是加拿大最大的植物园。其历史可追溯至 1932 年建成的洛克斯花园（Rock Garden），该园至今仍是园内历史最悠久的栽培展示区。RBG 在超过八十年的发展过程中，逐步从单一岩石园扩展为涵盖四大栽培园区与 1100 公顷自然保护区的综合机构，并自 2006 年起担任加拿大”全球植物保护战略（GSPC）”国家联络点，参与联合国《生物多样性公约》框架下的国际协作。
四大栽培花园与花园体系
RBG 现有四大正式栽培花园，总占地约 130 英亩（约 54 公顷），与超过 2000 英亩的自然保护地共同构成完整的花园与生态体系。Hendrie Park 与 RBG Centre 是面积最大的栽培园区，约 9 公顷，设有玫瑰园、地中海温室、Dan Lawrie 国际雕塑展及 Turner Pavilion 茶室；1932 年落成的洛克斯花园以耐寒宿根花卉与石灰岩景观著称，2016 年完成复兴改造后重新开放；自然步道系统在伯灵顿与汉密尔顿延伸 27 公里，包含四大入口与两处独木舟下水点。园内登记在册的植物超过 6600 个分类群、24.2 万余株个体，全年提供温室茶座、岩园餐厅与本地农场食材餐饮服务。
五十大专类园与重点植物收藏
RBG 园艺部目前维护 50 个专类收藏，涵盖野生来源、观赏栽培及具有科研与保护价值的植物，重点专类园包括凯蒂·奥斯本丁香收藏（世界最大、最多样的丁香专类园之一，5 月下旬盛花）、玫瑰园（耐寒抗病玫瑰配以伴生植物，6 月至 10 月持续开花）、鸢尾园（超过 1000 个鸢尾分类群，含高须、矮须、西伯利亚及粗壮鸢尾等）、芍药收藏（北美最多样、最具历史厚度的芍药专类园之一，涵盖 19 至 21 世纪品种）、樱花与木兰专类园（4 月底至 5 月初盛花）以及 Iris Peony Collection 等。除上述主推专类园外，园内还设有皮耐松柏园、Toni Carson 灌木园、山茱萸与紫荆园、多肉与仙人掌园、地中海植物园、本土植物园、岩生宿根园、铁线莲园及遗产植物保护专类区。
科研体系、标本馆与国际协作
RBG 的科研工作可追溯至 1950 年代，最具历史的研究方向是龙胆科（Gentianaceae）分类学，覆盖种类繁多的开花植物。过去数十年间，RBG 工作人员持续参与新品种选育、广泛的园艺植物国际登录权威机构运营（如木犀科丁香属 Syringa），以及植物多样性研究与濒危物种保护（如桑属红桑及 Trichophorum planifolium 等）。RBG 标本馆在国际标本馆索引中代号为 HAM，可容纳约 6 万份维管植物标本，兼具野生与栽培植物；图书馆藏书约 1.2 万册、连续出版物 1700 余种。机构加入北美植物园协会（APGA）等近 400 家植物园互惠网络，会员可在合作植物园享受免费或折扣入园，并与联合国生物多样性公约体系保持协作。
生态保护 Project Paradise 与公众教育
RBG 的自然保护地跨森林、湿地与草甸三类栖息地，记录有 750 余种本土植物、277 种迁徙鸟类、37 种哺乳动物、14 种爬行动物、9 种两栖动物及 68 种安大略湖鱼类。Project Paradise 是北美规模最大的淡水湿地修复项目之一，重点恢复 Cootes Paradise 与 Grindstone Creek 的水生栖息地，配套白头海雕繁殖监测、Desjardins Canal 鱼道维护、本土龟类栖息地恢复与入侵物种管理；园内划定 20% 特别保护区作为无人工步道的核心保育地。教育方面，RBG 通过成人项目、儿童与家庭项目、夏令营与日间营向公众提供自然与园艺课程，学校项目涵盖实地考察、虚拟课程及课堂资源，并设有面向公众的讲解员与志愿者体系。
Historical Evolution and Institutional Mandate
Royal Botanical Gardens (RBG) is located at the western tip of Lake Ontario, spanning Hamilton and Burlington in Ontario, Canada, and is the country’s largest botanical garden. The institution traces its roots to the Rock Garden, which opened to visitors in 1932 and remains the oldest cultivated garden within the network. Over more than eight decades, RBG has grown from a single rock garden into an integrated organization overseeing four cultivated garden areas and 1,100 hectares of protected nature sanctuaries. Since 2006, RBG has served as Canada’s national focal point for the Global Strategy for Plant Conservation (GSPC), contributing to the United Nations Convention on Biological Diversity framework.
Garden System and Four Cultivated Gardens
RBG’s four formal cultivated gardens cover roughly 130 acres, while its nature sanctuaries add more than 2,000 acres, for a combined footprint of over 2,400 acres. Hendrie Park and the RBG Centre form the largest cultivated area at about nine hectares, featuring a rose garden, a Mediterranean conservatory, the Dan Lawrie International Sculpture Collection and the Turner Pavilion Tea House. The 1932 Rock Garden, RBG’s birthplace, was significantly rejuvenated and reopened in 2016 with a focus on sustainable garden design. The nature trails system runs 27 kilometres across Hamilton, Burlington and Dundas, with four main trailheads and two canoe launch sites. The gardens collectively contain more than 6,600 taxa and over 242,000 individual plants, complemented by the Greenhouse Café, the Rock Garden Bistro and a Garden Shop showcasing local artisans.
Fifty Horticultural Collections and Signature Gardens
The horticulture department currently maintains 50 plant collections, ranging from wild-origin taxa to ornamental and conservation-priority plants. Signature collections include the Katie Osborne Lilac Collection, one of the largest and most diverse lilac collections in the world with peak bloom in late May; the rejuvenated Rose Garden featuring cold-hardy and disease-resistant cultivars blooming from July into autumn; the Iris Collection with more than 1,000 types including tall bearded, dwarf bearded, Siberian and spuria irises; the historically rich Peony Collection assembled from 19th, 20th and 21st-century cultivar introductions; and seasonal Flowering Cherry and Magnolia collections that signal the arrival of spring across the Arboretum. Additional specialty gardens include the Pinetum, the Toni Carson Shrub Collection, dogwood and redbud groupings, a Mediterranean plant garden, cacti and succulents, native plant and medicinal plant sections, the Rock Garden perennial displays, the Clematis Collection, and a heritage plant conservation area. The cultivated gardens and nature sanctuaries also harbour more than 20 designated heritage trees.
Research Programme, Herbarium and International Networks
RBG’s botanical and ecological research dates back to the 1950s, with its longest-running programme dedicated to the taxonomy of the Gentianaceae, a diverse family of flowering plants. RBG staff have historically contributed to plant breeding, managed international horticultural registration authorities such as the Syringa (lilac) registrar, studied plant diversity, and led conservation work on at-risk species such as red mulberry (Morus rubra) and Trillium grandiflorum relatives including Trichophorum planifolium. The RBG herbarium, internationally known by the code HAM, holds approximately 60,000 vascular plant specimens that combine wild and cultivated material. The library houses about 12,000 books and 1,700 serial titles, while the institutional archives preserve corporate records and the Canadian Historical Horticultural Research Collection documenting the development of Canadian gardens. RBG also participates in reciprocal networks of nearly 400 botanical gardens across North America and remains an active partner in APGA and other international plant conservation networks.
Ecological Conservation, Project Paradise and Learning
RBG’s nature sanctuaries support three principal habitat types: wetlands, forests and prairies, and host more than 750 native plant species, 277 migratory bird species, 37 mammal species, 14 reptile species, 9 amphibian species and 68 Lake Ontario fish species. Project Paradise, one of the largest freshwater restoration initiatives of its kind in North America, works to restore aquatic habitats in Cootes Paradise and the Grindstone Creek marshes. Additional initiatives include bald eagle monitoring, fishway protection at the mouth of the Desjardins Canal, native turtle recovery, invasive species management and a network of Special Protection Areas covering roughly 20 percent of the sanctuaries. Learning programmes span adult courses, child and family activities, summer and day camps, school field trips, virtual programmes and classroom resources, all designed to engage visitors with biodiversity, conservation, botany and plant ecology.
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