Every orange flower in the library
36 of the 82 flowers here carry this colour, ordered by how much of it the photograph actually shows. The library keeps one picture per flower and most of these come in several colours.
Why orange is the colour it is
Orange is usually two pigment systems stacked in the same petal. The base is carotenoid, the same chemistry that colours a carrot, laid down in the plastids. Over it sits a thin wash of anthocyanin, and the amount of that wash decides whether the flower reads apricot, orange or nearly red. A few flowers reach orange by a single route instead, using pelargonidin on its own, and those are the ones that look almost fluorescent in evening light because there is no second pigment muddying the return.
A single orange plant in a pastel border looks like a mistake; a third of the border in orange looks intentional. If orange feels wrong where you have put it, the usual fix is more of it, not less.
How orange each one really is
The same flowers again, this time grouped by how much of the colour is actually there in ordinary daylight rather than on a label.
What orange sits well with
What orange says
Orange carries energy, enthusiasm and open pride, without red's romantic obligation. It is the colour to send when you want to congratulate someone loudly and mean nothing more than that.



















































































































































































