Flower in Blue or Black
Edward K. Gilding
egilding at lava.net
Sun Jan 21 00:28:12 EST 1996
In article <4dqn8d$57h at lantana.singnet.com.sg>,
ayeongcw at email@example.com says...
>Can anybody tell me is there flower in blue or black colour? I mean
>not by artificial culture method.
>If not, what are the reasons? I have not seen any blue or black real
>I am very curious to know the anwers. Appreciate if anyone can reply me.
If youre looking for something REALLY blue, try a pea vine called
Clitorea trenea. It seems you can't capture to color on film, and it
actually looks purple under indoor lighting, but when you look at it
under the sun its a deep true sapphire blue with a white ring around a
yellow center. Pretty easy to grow from seeds.
Well, why aren't flowers black? and why is blue a rather uncommon color?
Well black absorbs light (thats why black it black, it doesn't reflect
light). And most (if not all) pollenators use light to find their food
source, nectar. Plants use flowers for reproduction (its quite odd, when
I think about it, the cut flower industry is really the sale of plant
Gonads!). Now if the pollenators can find the flowers, then the plant
obviously loses out, it can't produce seeds and thus a new generation.
However, there are a few close-to-black flowers, I know there are black
pansies, and a 'black' tomato(i know it isn't a flower, but just for
interests sake), and a black hoya. There are alot of browns in
Stapeliads (plants that use fowl smell and dead-colors to attract flies,
Blue is rather uncommon for plants, and I really don't know exactly why
that is. Maybe blue is so close to green that the flowers dont stand out
next to the foilage?? I know that insects use the blue-ultraviolet
section of the spectrum to find flowers. I also know that some plants
are simply incapable of producing blue pigment (like cacti) in their
flowers. The blue dahlia is the elusive prize that many dahlia
enthusiasts wish they had.
hope some of this helped somehow,
egilding at lava.net
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