Aaron Hicks wrote:
That having been said, I have no idea as to whether orchid
coloration is related at all to substrate pH. I don't recall ever having
heard or read about this, and I've been growing for 23 years as of april.

Substrate pH effects uptake of nutrients. Check out Bill Argo's
articles from the IPA magazine: http://www.firstrays.com/nutrition.htm

--Matt

Wendy wrote in
news:yuZXd.29883$FM3.25100@fed1read02:

Hi Bob, I would think chlorine bleach would kill a plant?
Now I have read about some kind of crystals (name escapes me), that
people dose Hydrangeas to make them more blue?
Remove peterpan for email reply

Cheers Wendy

bob wrote:
I would like some vrification. I read that 1 tsp. of household bleach
in a gallon of water is good for the color of blooming orchids and use
this solution to water the plants. Any thoughts?
Bob


It's called Aluminum Sulfate it makes the soil acid nice for blueberrys too
more info
http://henryfields.com/product.asp?p...=GL00000001180

Grow well and bloom magnificently
dusty