荷兰 扬森海外有限公司 Jansen’s Overseas B.V. – 北荷兰球茎盆栽全球供应商

从利瑟的一块租地开始

公司 1964 年由瑞恩·扬森创办。瑞恩·扬森在利瑟读完园艺学校后，二十一岁开始租地种花球；几年后他在罗德外克浩特买下一块带球茎棚的地。春夏秋三季在苗圃干活，冬天跑欧洲和美国推销自己的球茎，客户就是这样一点点攒起来的。

如今公司在球茎区的腹地罗德外克浩特，第三代已经上手。女婿丹尼斯·范德克罗特 1996 年进公司，2010 年进入董事会，罗兰德·杜因达姆同年加入管理层。2024 年 7 月，公司在自己的网站上发布消息，创始人瑞恩·扬森当月去世。

库肯霍夫的主要球茎供应商

公司是库肯霍夫的主要球茎供应商。库肯霍夫是世界上最大的春季花园，在利瑟，园区入口那座以公司命名的”扬森郁金香山”种着六万株郁金香，分成不同颜色和不同花期，保证游客任何时候进园都看得到开着的郁金香。

这层关系是公司自己写明的：英文站点把”库肯霍夫王室供应商”列在身份里，中文页面也写明是世界上最大的春季花园库肯霍夫的主要供应商。球茎之外，公司的植物品种还包括铁筷子、茵芋、白珠、白珠类植物和松树。

散装球茎、盆栽花球和预包装花球

产品按交货状态分成几类：散装种球、盆栽花球、预先包装好的花球，还有蜡质朱顶红和蜡质风信子。盆栽花球从 1984 年开始做，按客户需要分阶段交货，英文站点上的说法是”准备过的花球”和”盆栽花球”两个专家方向。

目录全部数字化，2026 季有散装球茎目录、秋冬（第四季度）目录，盆栽花球则是 2026/2027 季目录，另有标签符号说明的 PDF 和一个检索引擎。检索引擎可以按种类、类型、颜色和字母顺序筛选，分类里有风信子、郁金香、水仙、朱顶红、伴生植物和景观混合等。

十座厂房和三十一个恒温库房

厂区共有十座厂房，总面积一万五千平方米。恒温库房有三十一个，总容量三万八千立方米，配备监控设备，全天候运行。室外还有两块各两千五百平方米的地，一块堆材料和周转筐，一块用来装卸。

质量把关分三处做：测试中心和样品温室会把每一批抽样种下，检查质量和能不能开花，新品种也要先在这里试；实验室对每批做内部检查，找出隐蔽的缺陷并判定球茎处在哪个生长阶段；自有苗圃分布在不同地方，公司的自育品种在那里种植。

从专业种植场到公共公园

客户覆盖全世界的专业种球种植场、花木市场、花店、批发商和公共公园。经销商注册账号后可以直接从苗圃拿货，随时查看库存和价格，全天候下单并当场算出运费。通用销售条款按国家分列，德国、法国、英国和爱尔兰、意大利、荷兰、挪威、奥地利、波兰、西班牙、美国和加拿大、瑞典、瑞士各有一份，共十二份。

团队二十六人，商务总监是丹尼斯·范德克罗特，总经理是罗兰德·杜因达姆，销售岗位按市场划分，其中一位负责美国、加拿大、中国和迪拜市场。

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Starting from a Rented Parcel in Lisse

Jansen’s Overseas B.V. was founded in 1964 by Rein Jansen. After finishing horticultural school in Lisse, he started out at twenty-one, renting parcels of land to grow flower bulbs; a few years later he bought a plot with a flower bulb barn on it in Noordwijkerhout. He worked the nursery in spring, summer and autumn, and spent the winter months travelling through Europe and the United States to sell his bulbs, which is how he built up a steady clientele.

The company is still based in Noordwijkerhout, in the heart of the bulb-growing area known as the Bollenstreek, and the third generation has now taken over. Son-in-law Dennis van der Krogt joined in 1996 and has served on the management board since 2010, when Roland Duindam joined the management team as well. In July 2024 the company posted a notice on its own website reporting the death of founder Rein Jansen.

The Main Bulb Supplier to Keukenhof

Jansen’s Overseas supplies Keukenhof, the largest spring garden in the world, in Lisse. The tulip hill at the entrance, named “Jansens” after the company, carries sixty thousand tulips in a range of colours and flowering times, arranged so that visitors always find something in bloom.

The company states the relationship itself: its English site names the Royal Household of Keukenhof among its titles, and the Chinese page of the site says it is a main supplier to Keukenhof, the world’s largest spring garden. Alongside bulbs the range includes potted plants such as helleborus, skimmia, gaultheria, pernettya and pine.

Loose Bulbs, Potted Bulbs and Pre-packed Boxes

The range is grouped by how it is delivered: loose bulbs, potted raised bulbs, pre-packaged flower bulbs, and wax amaryllis and wax hyacinths. Potted bulbs have been part of the business since 1984 and are marketed in various delivery stages to match what buyers need. The English site describes the company as a specialist in prepared flower bulbs and in bulbs on pot.

Every catalogue is digital. For the 2026 season there is a loose bulb catalogue, an autumn and Christmas catalogue for the fourth quarter, and a 2026/2027 catalogue for pre-planted and potted bulbs, alongside a PDF explaining labels and symbols and a bulb search engine. The engine filters by species, type, colour and letter, covering hyacinths, tulips, daffodils, amaryllis, companion plants and landscape mixtures.

Ten Halls and Thirty-One Climate-Controlled Stores

The site covers ten industrial buildings with a combined floor area of fifteen thousand square metres. Thirty-one climate-controlled storage units hold thirty-eight thousand cubic metres in total and run with round-the-clock monitoring. Outside there are two further plots of two thousand five hundred square metres each, one for materials and crates and one for loading and unloading.

Quality is checked in three places. The test centre and sample greenhouse raise samples from every batch to check quality and whether the bulbs will flower, and new varieties are trialled there first. The laboratory inspects each batch internally to find hidden defects and to determine the stage of the bulb. The company’s own nursery grows its varieties at several locations.

From Professional Growers to Public Parks

Customers are professional bulb growers, garden centres, flower shops, wholesalers and public parks across the globe. Registered customers order straight from the nursery, see current stock and prices, place orders around the clock and get a transport cost calculated on the spot. General sales conditions are kept per country: Germany, France, the United Kingdom and Ireland, Italy, the Netherlands, Norway, Austria, Poland, Spain, the USA and Canada, Sweden and Switzerland.

The team numbers twenty-six people. Dennis van der Krogt is commercial director and Roland Duindam is managing director; sales is split by market, with one manager covering the USA, Canada, China and Dubai.