Houthoff Buruma advised Dümmen Orange on the acquisition of De Eeuwige Lente B.V. De Eeuwige Lente B.V. specialises in breeding, cuttings propagation and rooting. Over the years the company has specialised increasingly in Saintpaulia, with Euphorbia Milii a relatively recent addition to its product range.

Houthoff Buruma team included: Bram Caudri , Joram van den Berg , Luke van de Laar , Jasmijn Harms , Josephine de Bok , Fabienne Renes