加拿大 完美植物精选 Great Plant Picks – 推荐适应当地气候且具园艺推广价值的耐寒观赏植物

项目性质与覆盖区域

完美植物精选 Great Plant Picks（简称 GPP）是美国西雅图 Elisabeth C. Miller 植物园于 2001 年启动的旗舰园艺教育项目，为美国太平洋西北地区（北起加拿大不列颠哥伦比亚省温哥华、南至美国俄勒冈州尤金）的家庭园艺爱好者、景观设计师与零售苗圃提供权威选种参考。项目以多年田间观察为基础，仅向公众推荐已在当地气候下经过长期测试、表现稳定且具园艺推广价值的耐寒观赏植物，据项目公开数据库已累计推出约 1000 项入选植物。

委员会与公开植物数据库

GPP 的核心运作机制是由一支跨华盛顿州、俄勒冈州与加拿大不列颠哥伦比亚省西海岸地区的志愿学术委员会，分灌木与藤本、针叶树与乔木、宿根与球根三个常设小组，结合绣球、铁线蕨、蔷薇等专题顾问团，对候选植物进行审议与实地考察，最终通过多数票与圆桌讨论完成入选。委员会成员覆盖批发苗圃、零售苗圃、景观设计师、植物园与树木园等多元背景，入选名录与历年档案通过项目公开植物数据库（/api/plantstable 与 /api/plants/{id} 端点，约 1124 条记录）免费向公众开放。

选种标准与分区适应性

GPP 对所有入选植物规定统一的园艺标准：必须在美国农业部 7 至 8 区（−18 ℃ 至 −12 ℃）的海洋性气候下安全越冬，具备长势稳定、抗病虫害、观赏季长、可在加拿大与美国境内至少两家零售苗圃购得等多项硬性条件，不得被列为入侵性过强或需特殊管理知识的物种；同时对宿根、乔灌木、球根、斑叶植物分别提出维护、修剪、稳定性等附加指引，并明确项目仅推荐观赏植物，暂不涵盖果蔬、一年生花卉与不耐寒多年生植物。

海报与零售苗圃对接

为推动选种知识传播，GPP 自 2013 年起每年发布一幅年度主题海报，从「耐旱奇兵」到「四季花园」「浪漫植物志」等系列，可由公众向秘书处免费索取（仅需自付邮资），2024 至 2026 年间已陆续推出「适合小型庭院的植物」「适合多种容器组合的植物」「节水奇兵（Waterwise Wonders）」等新作；另一方面，项目在西雅图、塔科马、波特兰、温哥华与奇利瓦克等地的零售苗圃目录中标注入选植物，方便园艺爱好者按所在地直接向苗圃咨询购买。

教育使命与公众活动

作为 Elisabeth C. Miller 植物园下属的对外教育项目，GPP 的经费主要来自 Pendleton and Elisabeth Carey Miller 慈善基金会、《西雅图时报》以及个人捐赠者，并由 Elisabeth C. Miller 植物园统一管理。项目将持续以公开数据库、年度海报和区域苗圃网络为载体，把太平洋西北地区的园艺研究转化为普通家庭与景观从业者可以随手使用的选种建议。

Programme Mandate and Geographic Scope

Great Plant Picks (GPP) is the primary educational programme of the Elisabeth C. Miller Botanical Garden in Seattle, Washington. Launched in 2001, it serves home gardeners, landscape designers and retail nurseries across the maritime Pacific Northwest, from Vancouver, British Columbia, through the Puget Sound lowlands and into Eugene, Oregon, recommending only those ornamental plants that have been observed to thrive in the cool, wet winters and dry summers that define the region. The programme publicly lists more than one thousand evaluated plants through its open database.

Selection Committee and Public Plant Database

GPP is run by a volunteer selection committee drawn from horticulture professionals on both sides of the U.S.–Canada border, organised into three standing subcommittees for shrubs and vines, trees and conifers, and perennials and bulbs, with additional specialist advisors covering genera such as clematis, ferns and rhododendrons. Members serve wholesale and retail nurseries, landscape design firms, arboreta and botanical gardens, and they make selections by majority vote after field evaluation. All decisions, plant records and supporting notes are exposed through the programme’s public plant database, which lists more than 1,100 named plants with cultural guidance.

Plant Evaluation Criteria and Climate Suitability

Every Great Plant Picks selection must satisfy a common set of horticultural criteria: it must be hardy in USDA zones 7 and 8, long-lived, vigorous without demanding specialist care, reasonably disease and pest resistant, available from at least two retail sources in Canada and the United States, adaptable to a range of soils, neither invasive nor moisture-hungry, and capable of providing at least a long season of interest. Perennials must require minimal staking, trees and shrubs must need little pruning, bulbs must persist as long-term perennials, variegated cultivars must remain stable, and the programme explicitly does not consider fruits, vegetables, annuals or tender perennials.

Annual Posters and Retail Nursery Network

To translate the committee’s work into practical guidance for gardeners, GPP has published an annual themed poster since 2013, highlighting collections such as “Plants for Containers”, “Flora Romantica”, and the 2026 “Waterwise Wonders” series. Posters are mailed free of charge to the public on request, with only postage reimbursed, and they are paired with the Helpful Plant Lists search pages on the programme’s website. In parallel, a network of more than 40 retail nurseries across Washington, Oregon, British Columbia and beyond is invited to indicate which GPP selections they stock, so gardeners can locate the closest source for a particular plant.

Educational Mission and Public Outreach

GPP is funded by the Pendleton and Elisabeth Carey Miller Charitable Foundation, by The Seattle Times and by individual donors, and is administered through the Elisabeth C. Miller Botanical Garden. It positions itself as a non-commercial educational resource, supplying the maritime Pacific Northwest gardening community with an evidence-based, locally tested plant palette through its open database, annual posters, retail directory and freely accessible search tools.

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