London-headquartered private equity firm BC Partners recently bought a majority stake in Dümmen Orange, valuing the Dutch flower breeder at around $500 million. The deal was advised on by M&A experts from six firms: Nielen Schuman, Holland Corporate Finance, Houthoff Buruma, Simmons & Simmons, Sincerius and William Blair, and funded by UBS and RBC.  Founded in 1963, with earlier operations tracing back to 1923, Dümmen Orange is a large producer of flower seeds, cut flowers and potted plants. The company, formerly known as DNA Green Goup (the firm was rebanded as Dümmen Orange just a few months ago), has approximately...