Takii marketing and sales manager for flowers, Harm Custers, accepted the prize from Fleuroselect president Nils Klemm and secretary general, Sally van der Horst.
Custers said: "The award will strongly support us in increasing Cannova's visibility."
The Fleuroselect jury praised the "superb contrast of scarlet flowers with dark foliage."
Takii's breeder Diony de Bont said customers want "Mediterranean flair" in their garden.
Runners up were Begonia bolivensis Red Fox Lucky Strike (Dummen), Begonia x benariensis F1 Big Pink Green Leaf (Benary), Dahlia cultivars Dalaya Bali (Selecta Klemm), Petunia x hybrida Musical Cha Ching (Florensis) and Petunia Sunpleasure Porch Neon Sugar Beat (Grunwald).
The FleuroStar contest is held annually during the FlowerTrials week in June in the Netherlands and Germany and is judged by 30 independent judges.