Nursery catalogue Van Tubergen Haarlem autumn 1955. | Grimbergen Booksellers
History of the Dutch Iris — Bloom Expert
Last Call for Flower Bulbs - Harvesting History
Tulipa praestans Van Tubergen's Variety
AN TURERGEN BULBS 1948.
Tulipa clusiana var. chrysantha Tubergen's Gem | Van Engelen Wholesale Flower Bubs
Scottish Rock Garden Club on Twitter: "Wonder how many people never knew a narcissus could look like this? Compact and perfect - like an alpine cushion plant! @AlpineGardenSoc @RHSWisley @jmitchell_RBGE @plantmadman @MattMattus