On Mon, 27 Apr 2009 23:47:56 GMT, "brooklyn1"
wrote:


"Phisherman" wrote in message
.. .
My iris bed is in full bloom. Blossoms were yellow last year now they
are blue. What causes this and will they be blue again next year?

Some iris can behave like hydrangea, their blooms can change color with soil
pH...have you added anything, mulch, new plants nearby?


My neighbor has purple iris, about 60 feet away, so I was not sure if
the color change was due to that(?). The iris are growing with
daffodils in round bed surrounded by tall fescue grass. My neighbor
has deep purple iris, about 60-80 feet away. The bed may have got
some lawn fertilizer, but if not neutral the soil may be slightly
acidic (I'll test it today), no mulch, no new nearby plants. Light
blue is not a favorite color, but glad to see them blooming well.