荷兰 Vitro Plus 蕨类植物苗圃是一家位于荷兰泽兰省 Burgh-Haamstede 的家族经营组织培养专业苗圃，由蕨类苗圃主之子 John Bijl 于 1990 年创立，专攻温带与热带蕨类的组织培养、无菌扩繁与全球批量供应。苗圃持有自研的 Vitro-Tray® 与 Vitro-Plug® 两大交付/栽培系统，其中 Vitro-Plug® 是 Vitro Plus 专利的 Jiffy 椰糠块无菌蕨类幼苗体系；目前在售蕨类品种超过 150 个，产品出口至全球 33 个国家，年产量达 4000 万株蕨类苗木。苗圃团队规模虽然精干，但 45% 的员工已在公司服务超过十年，团队以 35 年蕨类育种与无菌组织培养经验为客户提供品种鉴定、栽培技术、温室管理与营销策略等全方位咨询服务。
创始人 John Bijl 与 35 年蕨类组织培养技术沉淀
John Bijl 出身于荷兰苗圃世家，是一位 kwekerszoon（苗圃主之子），自幼在家族苗圃中耳濡目染接触蕨类栽培与育种，1990 年创立 Vitro Plus。创业初期公司即锁定”以客户和市场需求为导向”的核心理念，三十五年来一直以解决客户实际痛点为产品开发驱动力，这也让 Vitro Plus 从一家荷兰本土实验室成长为面向全球园艺与花卉种苗批发商的工业化蕨类供应商。John Bijl 与团队持续投入蕨类组织培养（weefselkweek）核心工艺的研发，在实验室层面不断推陈出新，先后多次获得行业创新奖项，并以此为基础陆续推出新优蕨类栽培品种。Vitro Plus 的产品研发哲学强调”所有客户始终都能获得最新品种与最佳品质，价格尽可能具有竞争力”，这一理念贯穿从培养基配方、扩繁流程到交付前分级包装的全部环节，使公司能够长期服务于欧洲、北美与亚洲的花卉与园艺产业链。
Vitro-Tray® 与 Vitro-Plug®：两大专利蕨类交付体系
Vitro Plus 围绕蕨类商业化生产流程自主研发了两套交付与栽培系统，分别针对热带蕨类与温带蕨类的不同种植需求。Vitro-Tray® 是苗圃最畅销的交付方式，专为公司热带蕨类品系设计，每盘包含 500 株 stage 3 阶段的 Asplenium 等热带蕨幼苗，附带 19.4 × 19.3 × 8 厘米的标准塑料托盘，客户在收到托盘后可在正常室温条件下保存 5 天再行移栽，移栽采用手工或机器分苗均可，分苗后约经 11 周培养即可长成商品盆栽。Vitro-Plug® 则是 Vitro Plus 专利的另一种交付系统，蕨类幼苗在实验室内无菌培育于 Jiffy 椰糠块（coco-peat plug）上，整株脱凝胶、附带初生根系并完全无病虫害，因此生长周期更短、移栽损耗更低，可直接上盆至小规格花盆，特别适合温带耐寒蕨类的零售钵苗体系。两种交付体系背后是同一套”无菌扩繁 + 完整栽培建议”的技术资产，Vitro Plus 同时为客户附上专属栽培手册，详述基质配比（泥炭 + 珍珠岩 + 椰糠，pH 5.5）、K-P-N 24-8-16 配方施肥、EC 1.25-1.75 灌溉电导率、病虫害综合防治（IPM）等关键参数，使每一株出厂苗木都能在客户温室中迅速进入最佳生长状态。
从植株外观到根球完整：Vitro Plus 严苛品质管控与防病流程
Vitro Plus 把品种纯度与植株健康作为品质管控的第一要务，所有出厂苗木均经过充分根系发育、严格生物学鉴定后再上架出售，对易于回变或形态不稳定的栽培品种会主动淘汰，以确保对外发售的每一株都是稳定一致的园艺表现型。在病虫害防治层面，苗圃与生物防治公司 Koppert 以及 Synvital 合作运营 weerbaarheid（植物韧性增强）项目，通过提升植株本身免疫力来替代化学农药，目前在温室种植的蕨类表现出”健康强壮、极少病虫侵染”的整体状态，对细菌、真菌与昆虫攻击的耐受度均显著高于普通栽培流程；IPM（综合病虫害管理）措施与园艺卫生规范共同构成了 Vitro Plus 病虫害防控的双层防线，使客户收到的几乎全部是零病害、零虫卵的洁净苗木。苗圃同时建立了一套内部”Plant in de kijker”（本月焦点植物）双月刊电子报，从 2018 年起每两月专题介绍一个蕨类家族（包括品种来源、栽培要点与商业潜力），让全球客户可以系统地跟踪 Vitro Plus 在不同蕨类物种上的最新选育与扩繁成果。
150 个品种、33 个出口国、4000 万株年产能：全球蕨类种苗供应链
Vitro Plus 目前在售与可供应的蕨类品种超过 150 个，产品出口网络覆盖欧洲、亚洲、北美与南美的 33 个国家，2024 年全年预计从苗圃出货 4000 万株蕨类苗木，是全球花卉与园艺种苗产业链中规模最稳定的几家蕨类专业供应商之一。苗圃以”spore to fern”（从孢子到成株）作为内部质量口诀：在实验室内由无菌孢子开始扩繁、经过驯化栽培、移栽到标准容器、并在客户温室继续完成商品化盆栽，全部环节皆有可追溯记录；客户既可以购买公司当年的”plant in de kijker”焦点品种，也可以批量订购传统的 Nephrolepis（Boston Fern 家族）、Asplenium、Nephrolepis exaltata ‘Boston Blue Bell’、’Emerald Queen’ 等长期热销品种。除种苗批发外，苗圃还为大型花卉企业、园艺中心与景观设计公司提供定制扩繁、定向选育与品牌专属品种开发等深度合作方案，使 Vitro Plus 在全球温带与热带蕨类商业生产体系中扮演着”上游种源 + 技术顾问”的双重角色，并定期通过季度电子报与官网更新通知向全球客户同步新品种上架与栽培技术更新。
Vitro Plus is a family-run tissue-culture fern nursery located in Burgh-Haamstede, Zeeland, the Netherlands, founded in 1990 by John Bijl — a kwekerszoon (nurseryman’s son) — and now in its thirty-fifth year of operation. The nursery specializes in the sterile propagation, greenhouse cultivation and global wholesale supply of temperate and tropical ferns through its proprietary Vitro-Tray® and patented Vitro-Plug® delivery systems; its current catalog includes more than 150 fern varieties, its network spans 33 export countries, and 45 percent of its team has more than ten years of service. With annual output expected to reach 40 million ferns in 2024, the company supplies cut-flower growers, pot-plant nurseries, garden centers and landscape professionals across Europe, North America and Asia.
Founding: John Bijl and 35 Years of Fern Tissue-Culture Expertise
John Bijl, a kwekerszoon raised in a Dutch horticultural family, founded Vitro Plus in 1990 with a single principle: to develop products that directly answer the needs of customers and their markets. From the start the company has reinvested continuously in tissue-culture laboratory technique — the discipline of multiplying ferns from spores under sterile in-vitro conditions — and that sustained laboratory investment has earned the firm multiple industry innovation awards and a stream of new commercial cultivars. The company’s product philosophy is to keep “all our customers always able to access the newest varieties and the best quality at the most competitive price”, and that ethos governs everything from nutrient formulation in the laboratory, through acclimatization in the greenhouse, to the final grading of ready-to-ship trays. The unusual stability of the Vitro Plus workforce — with 45 percent of staff having served for more than ten years — is a direct expression of this long-horizon approach to fern horticulture, where mastering spore handling, sub-culture timing and agar protocols typically takes many growing seasons.
Vitro-Tray® and Vitro-Plug®: Two Patented Delivery Systems for Ferns
The Vitro-Tray® is Vitro Plus’ flagship delivery format and is used for the company’s tropical fern assortment. Each tray holds 500 stage-3 Asplenium plantlets on a standard 19.4 × 19.3 × 8 cm carrier, despatched ex-agar without gel and already feathered; on arrival the tray can be stored for up to five days under normal room conditions (kept away from direct sunlight and high temperatures, with the cover foil intact), after which the plantlets are pricked out by hand or by machine, transplanted into the chosen plug size, and grown on for roughly eleven weeks until they reach saleable pot size. The Vitro-Plug®, by contrast, is a patent-protected system in which fern clumps are raised sterile in the laboratory on Jiffy coco-peat plugs: the plantlets arrive slightly rooted, fully disease-free, and noticeably stronger than agar-only material, which shortens the growing-on cycle, reduces transplant loss, allows direct potting into smaller containers, makes hand-pricking fast and simple, and crucially allows all fern types — including hardy temperate species — to be transplanted automatically. Both formats sit behind a unified cultivation manual that specifies substrate mix (peat + perlite + coco, pH 5.5), K-P-N 24-8-16 nutrition, EC 1.25-1.75 irrigation water, magnesium supplementation and IPM regimes, so each shipment integrates seamlessly into the customer’s own greenhouse workflow.
Plant Health: Koppert-Synvital Resilience Programme and Strict Quality Control
Quality control at Vitro Plus begins in the laboratory: every plantlet is fully rooted and rigorously botanically identified before despatch, and any cultivar prone to reversion or morphological instability is culled so that only stable, true-to-type material reaches customers. Disease and pest pressure on ferns is in any case relatively low, and Vitro Plus works proactively with the Dutch biological-control specialists Koppert and Synvital on a weerbaarheid (plant resilience) programme that strengthens the plants’ own immunity through nutrition, growing conditions and microbial support; the result, by the firm’s own admission, is greenhouse fern stock that “looks healthy and strong” and tolerates bacterial, fungal and insect pressure far better than conventionally raised material. The nursery complements this biological approach with disciplined IPM (Integrated Pest Management) — sticky traps, scouting, hygiene barriers — so that incoming customers receive essentially pest- and disease-free trays and plugs. Since 2018 the firm has also published a bi-monthly digital newsletter, “Plant in de kijker” (Plant in the Spotlight), each issue of which profiles a different fern family for commercial growers, with notes on origin, cultivation requirements and market potential; the entire back-catalogue is archived on the website for global reference.
150 Varieties, 33 Countries, 40 Million Ferns: a Global Wholesale Network
Vitro Plus currently lists more than 150 fern varieties in its assortment and ships to 33 export countries, with annual nursery output projected to reach 40 million ferns in 2024 — placing it among the most consistent year-round wholesale suppliers of tissue-cultured ferns worldwide. The internal maxim “van spore tot varen, elke stap met zorg” (from spore to fern, every step with care) describes a fully traceable pipeline: sterile spore inoculation, agar multiplication, acclimatization in the greenhouse, transplantation onto Vitro-Tray® or Vitro-Plug®, and finally the customer’s own finishing cycle in their nursery. Alongside its standing catalog the firm offers long-running commercial workhorses such as Nephrolepis exaltata ‘Boston Blue Bell’ (the best-selling Boston fern in the range, finished at roughly 20,000 lux with summer shading required) and ‘Emerald Queen’ (a notably sun-tolerant selection that grows in full Florida sun without protection). Beyond standard wholesale, Vitro Plus also develops custom propagation runs, bespoke selections and brand-specific cultivars for major floriculture partners, and it keeps its global customer base updated through a regular quarterly e-newsletter that announces new releases, availability windows and cultivation refinements.
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