美国 American Daylily & Perennials – 密苏里州 1988 年创立的萱草与多年生苗圃

American Daylily & Perennials（美国萱草与多年生植物苗圃）是一家位于密苏里州 Grain Valley、由 Roberson 家族经营了 37 年的专业多年生植物商业苗圃。公司由 R.J.（Jack）Roberson 博士与妻子 Jo 在得克萨斯州休斯顿创立，1988 年将田间种植基地迁至堪萨斯城地区，长期致力于萱草育种、栽培与跨区域测试，并衍生出 Patriot™ 马缨丹、Liberty® 美人蕉与 Sunrosa™ 玫瑰等自有品牌。苗圃运营由家族延伸至全美批发与零售网络，参与创立并长期主持美国萱草遴选协会（All-American Daylily Selection Council, AADSC），为客户提供经过多年跨区实测验证的植物材料。

家族沿革与品种育繁

Roberson 夫妇长期专注于萱草杂交育种与筛选，Jack 博士以育出 Black Eyed Stella（PP#7909）闻名，这是 1993 年 AADSC 认证的首个 All American Daylily，至今仍是销量稳定的明星品种。二十余年专注萱草之后，Jack 启动了另一条育种线——Patriot™ 马缨丹系列，作为十五年来首批新杂交马缨丹，重新唤起公众对马缨丹这一传统花园植物的关注。1994 年，超紧凑型 Florastar Winner Patriot Rainbow 推出，使 Patriot 系列的影响力大幅提升。目前苗圃的独家品牌包括 All American™ Daylilies、Tea Party™ Daylilies、Patriot™ Lantanas、Liberty® Cannas 与 Sunrosa™ Roses。

品种规模与协会认证体系

苗圃核心业务以萱草为主，覆盖常绿、半常绿与休眠三类株型，并按芳香性、重瓣性、再次开花性等园艺特性细分；同时大量供应马缨丹、美人蕉与玫瑰共计数百个栽培品种。所有萱草均经 AADSC 多区测试体系评估——该组织由 Roberson 家族参与创立，是美国与加拿大境内唯一针对萱草的跨区域科学测试机构，候选品种须在 5 个以上 USDA 耐寒分区中表现优于 7000 多个参试品种的前 85%，并按 52 项园艺性状评分。Liberty® 美人蕉、Patriot™ 马缨丹中的 Cherry、Hot Country、Hallelujah 等品种另获 Florastar 与 International Plant Selections（IPS）奖项。

订购配送与批发零售体系

苗圃面向零售家庭园艺者与批发客户双轨运营。零售客户可通过 Request a Catalog 页面获取免费纸质目录或在线注册账户；批发订单最低起订金额为 250 美元，按 Single Fan、#1（一到二分蘖，二年生成熟开花株）与 Mini Clump（二到四分蘖裸根成品）三档分级计价，按订购数量提供 5–8 美元不等的阶梯折扣。供货形式除裸根苗外，Mini Clump 适合直接落地作一年生盆栽效果，单分蘖则适合小批量密植或大容器栽培。邮寄季节根据品类与 USDA 耐寒分区分别安排：萱草 4–11 月可发货（USDA 3–10 区），4–6 区推荐春季定植、7–8 区春秋皆宜且秋季最佳；马缨丹 10 月至次年 5 月发货（USDA 3–10 区，3–8 区 4–7 月定植）。

栽培支持、质保与社区参与

苗圃在官网提供完整的零售与批发栽培指南（Daylilies / Cannas / Lantanas 商业生产与家庭园艺两类），内容覆盖株型选育、土壤适应性、抗病性、再次开花性与 USDA 分区定植日历，并配套 AADSC 测试、Exhibition Winner 与 Landscape Winner 等奖项标识，便于消费者按景观用途选购。所有品种均享有 Planting & Shipping Seasons 中规定的成活保证与替换政策。批发客户除产品系列外，还可申请 Robrick Nursery、Park Avenue Farms、Monrovia、Gulley Greenhouse、Possum Run、Yoder-Greenleaf、Wojo’s、Pleasant View、Timbuk Farms 等授权种苗供应商网络，覆盖全美各主要园艺分销渠道。

官网: https://americandaylily.com/

American Daylily & Perennials is a family-owned commercial perennial nursery based in Grain Valley, Missouri, with 37 years of breeding, growing and trialling daylilies (Hemerocallis) and complementary perennials. The company was founded by Dr. R.J. (Jack) Roberson and his wife Jo in Houston, Texas; in 1988 the field operations were relocated to the Kansas City area. Beyond daylilies the nursery has developed proprietary brands including Patriot™ Lantanas, Liberty® Cannas and Sunrosa™ Roses. The family co-founded and continues to support the All-American Daylily Selection Council (AADSC), the only organisation that tests daylilies across multiple USDA zones in the United States and Canada.

Family Heritage and Breeding Programme

Dr. Jack Roberson’s breeding work produced Black Eyed Stella (PP#7909), the first AADSC-certified All American Daylily in 1993 and still a flagship landscape cultivar. After two decades devoted to hybrid daylilies, Jack launched a parallel breeding line — the Patriot™ Lantana series — which became the first new hybrid lantanas released in more than 15 years and revived public interest in this traditional garden plant. The 1994 introduction of the ultra-compact Florastar Winner Patriot Rainbow marked a step change in the Patriot series’ popularity. Today the nursery’s exclusive brand portfolio comprises All American™ Daylilies, Tea Party™ Daylilies, Patriot™ Lantanas, Liberty® Cannas and Sunrosa™ Roses.

Cultivar Scale and Trial Network

The nursery’s core inventory is built on daylilies spanning evergreen, semi-evergreen and dormant foliage classes, with sub-categories for fragrance, rebloom and exhibition form, complemented by hundreds of lantana, canna and rose cultivars. Every daylily passes through the AADSC multi-zone trial protocol: candidates must outperform more than 7,000 reference cultivars in the top 85% across at least five USDA hardiness zones in the United States and Canada, scored on 52 horticultural characteristics. Liberty® Cannas and Patriot™ Lantanas including Patriot Cherry, Hot Country and Hallelujah have additionally earned Florastar and International Plant Selections (IPS) awards.

Ordering, Shipping and Wholesale System

The nursery serves both retail gardeners and wholesale buyers. Retail customers may request a free printed catalogue via the Request a Catalog page or register an online account; wholesale orders require a 250 USD minimum and are priced in three grades — Single Fan, #1 (one-to-two fan, two-year blooming-sized plant) and Mini Clump (two-to-four fan bare-root equivalent of a finished one-gallon container) — with tiered discounts ranging from roughly USD 5.49 to 8.79 across 10–500+ fan volumes. Shipping seasons are aligned with USDA hardiness zones: daylilies ship from April through November (USDA zones 3–10, with spring planting in zones 4–6, spring or fall in zones 7–8 with fall preferred, and fall planting in zones 9–10); lantanas ship from October through May (USDA zones 3–10, April–July planting in zones 3–8, year-round in zones 9–10).

Grower Support, Guarantee and Community

The website publishes detailed planting and shipping-season guides for daylilies, cannas and lantanas under both commercial-production and home-garden tracks, covering foliage type, soil adaptation, disease tolerance, rebloom behaviour and USDA zone planting calendars. Retail and wholesale catalogues flag AADSC-tested, Exhibition Winner and Landscape Winner designations so buyers can match cultivars to landscape use. All shipments are covered by the Planting & Shipping Seasons guarantee and substitution policy. Wholesale buyers may also source through the authorised network of Robrick Nursery, Park Avenue Farms, Monrovia, Gulley Greenhouse, Possum Run, Yoder-Greenleaf, Wojo’s, Pleasant View and Timbuk Farms, providing national distribution coverage across the United States.

Official Site: https://americandaylily.com/