But things have changed, and new varieties from two different sources have ensured that we all take another look at bidens.
In Britain, the Thompson & Morgan breeding program has developed a series of varieties which are much more neat and compact than Bidens ferulifolia, come in new colors and flower forms and which are also more prolific.
There are eight varieties in their Pirates Series with ‘Golden Eye’ (above, click to enlarge) probably the pick, its golden centered white flowers are outstanding. There’s also the pure white ‘Pirates Pearl’, the double yellow ‘Pirates Booty’ as well as single and semi-double yellow varieties. Unless your containers are huge, all are improvements on Bidens ferulifolia.
Then from Japan comes the Hawaiian Flare Series. No pure yellows at all in this series, which concentrates on orange and red shades and color combinations. The plants are larger than those in the Pirates Series with a semi-trailing habit and are very prolific. The first three in the Hawaiian Flare Series are ‘Hawaiian Flare Orange Yellow Brush’ (below right, click to enlarge), with gold-centered orange flowers, ‘Hawaiian Flare Orange Drop’ (below left), which is the reverse with vivid orange flowers and yellow-tipped petals while ‘Hawaiian Flare Red Drop’ (below center) is soft red in color. More are on the way.
These are all just starting to appear on websites, in catalogs and in nurseries. In Britain try Mr. Fothergill’s, Brookside Nursery and good garden centers. In North America try Burpee and good local retail sources, across the Pacific North West plants are also available in nurseries supplied by wholesaler Log House Plants.