Re: Color change

I don't know anything re affect of acidicy or alkalinity on
anthocyanin, but do know ph of soil can affect nutriant uptake and
this should have an effect, but have no idea what that effect would be.

Chuck Chapman

--- In iris-photos@yahoogroups.com, Autmirislvr@... wrote:
>
>  
> In a message dated 9/13/2006 9:43:09 P.M. Central Standard Time,  
> irischapman@... writes:
> 
> <<The cold will increase anthocyanin production over warm days. 
Exposure
> to sun does decrease amount of anthocyanin, and thus fading  of
> intensity of anthocyanin. A black flower can become a dark  purple
> after a couple of sunny days.>>
>  
> Chuck, does the soil variation (acid vs alkaline) also affect the  
> anthocyanin ONLY??  The striking differences I've noticed in the
past seem  to be the 
> shades of purple/lavender.  My own REBOUND was so ugly in Memphis 
in 2002 that 
> I wished I had a shovel in my tote bag!  The lovely reddish  tones
I'd always 
> loved were an old rose/lavender with a metallic sheen.   UGLY!!  (In
my eyes)  
> RADIANT BLISS was a bit dull and lackluster  there also, but could be 
> attributed to warmer temperatures.  It was HOT and  steamy that
week.  Living in KY 
> I'm accustomed to hot and steamy!!
>  
> PHOENIX, when in the bed that was an old garden, was a deep gorgeous
 plum.  
> Moved to the top of a hill, the other end of two acres, it was a 
medium 
> lavender and held NO appeal to me.  It went from being in my top 5 
to the bottom 
> 5.  (Because I normally don't like purple plicatas)   Looking back,
I'm not 
> positive this was soil conditions, since I have no memory  of spring
temperature 
> variations in those years.  I've always thought it  was due to soil,
but . . . 
> I can admit to a possible misinterpretation.  
> 
>  
> ________________________________________________________
> If you  don't cross them, you'll won't have to plant them! Bah!
Humbug!! Hot 
> summer!  
> Betty W. in South-central KY Zone 6 ---
> Bridge In Time Iris  Garden@website:
> _www.thegardensite.com/irises/bridgeintime/_ 
> (http://www.thegardensite.com/irises/bridgeintime/) 
> _Reblooming Iris - Home Page_ (http://www.rebloomingiris.com/)  
> _iris-photos archives_ (http://www.hort.net/lists/iris-photos/)  
> _iris-talk archives_ (http://www.hort.net/lists/iris-talk/)  
> _AIS: American Iris Society website_ (http://www.irises.org/)
>







 
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