HilverdaKooij leads the global market in selecting, breeding and propagating Dianthus, Limonium and Alstroemeria varieties, and also breeds, selects and propagates Helleborus, Begonia, Echinacea, Gypsophila and Scabiosa cultivars.



The large scale of the company’s operations and its network of locations in the Netherlands and abroad allows HilverdaKooij to provide its customers everywhere in the world with a complete assortment of starting material for producing cut flowers and pot plants.

HilverdaKooij Pand 2015

Strong company

HilverdaKooij is a strong company with a core business in delivering starting materials for growing cut- and pot Dianthus. Meanwhile many varieties have been added to the cut flower collection, like the striking Dianthus barbatus hybrids we call Sparkz ® The new Gypsophila series Zinzi, Helleborus Magnificent Bells® and the recently introduced Scabiosa series make up an exceptional cut assortment.

In the past years we expanded our pot plants series as well. Besides Sunflor® Dianthus HilverdaKooij also selects Alstroemeria Inticancha® , Begonia Be*Adore® , Dianthus Beauties®, Helleborus Snow Crystal® en -Winterbells®.


Innovation in product development

HilverdaKooij’s R&D department develops new breeds in different product groups. We have great expertise when it comes to classic breeding but of course we use the most modern techniques as well. We have already had ground-breaking results and the latest development of new varieties is prosperous.


To achieve the highest efficiency, HilverdaKooij has decentralized part of its company activities. We have taken the production closer to the sales market, which means a big cut back in energy and transport costs. In terms of sustainability and continuity, these are developments that our customers can profit from. Nowadays HilverdaKooij has production facilities in the Netherlands, Kenya, India and China.



Surprising and innovative: Sparkz is a unique Dianthus collection by HilverdaKooij. The name stands for future commercial talents: different kinds and varieties with distinctive shapes and outstanding colours.

Green Trick and Solomio have earned their stripes with the trade and florists already. Green Trick has been introduced over ten years ago and is a special Dianthus because of its distinct shape; a green round flower without petals. Solomio stands out with its almost horizontally growing petals. Along with the bright colours it’s a flower that can’t be missed.

Besides these two varieties, the Sparkz collection includes the Green Wicky, Green Magma, Breanthus, Raffine, Star, Black Jack, Parzival and the mini Tiara Seri Cornet.

Further information on our cut flowers and potted plants can be found on our website www.hilverdakooij.nl and specific details on the Sparkz collection at www.sparkzflowers.com