Are you saying you have no yellow or purple iris at all anymore?

Purple and Yellow are two colors modern iris descended from and tend to be the most vigorous growers. It's possible there was a pink (either from a bee pod or a forgotten "gift") that was crowded out by the more vigorous ones. This is quite common. Pink is a new color in bearded iris history.

Bearded iris do not change from one color to another even with extreme weather changes. The colors can become richer with cool temps.

My purple and yellow ones that are in the original gardens are still purple and yellow.The ones that are pink now are some of the transplanted ones,and i have never in my life had pink iris.
My iris aren't the only things that changed this year.I have 2 rose bushes planted on an arbor.They are both American pink climbers.This is the third year for them,for the first 2 years they were always pink blossoms,this year however on one side of the arbor one of the canes came up with a burgandy and very different flower.Instead od being big and pink,that cane send off smaller and burgandy flowers,more along the size of iceberg roses.
Then in the front yard i have 2 double delights planted.After all the rain we had this winter we thought we were going to lose them,as the ground there stayed saturated for so long.However they bounced back also,different than usual but they're back.The bushes now have flowers that range from a creamy yellow to almost dark red with white,peachey colors and several other colors.Truly fascinating.
I do have pictures of all these changes to prove what i am saying,as i do take pictures all the time.I just sent the pictures of the rose bushes in my front yard to my sister in N.Y.,She had been here last year ,and saw how they bloomed,so when i sent her the pictures this year,she couldn't believe it.She asked me if she could send them to a gardening show back there,that has a radio show and answers questions on things like this.Of course i told her yes.
Kathi

on one side of the arbor one of the canes came up with a burgandy and very different flower.Instead od being big and pink,that cane send off smaller and burgandy flowers,more along the size of iceberg roses.

The burgundy rose is from the rootstock, which is a once-blooming (spring only) rose called Dr. Huey. The rootstock rose will eventually take over unless you pull out all the suckers.

Make sure it's not a sucker cane on your climbing rose.

I know RoundUp drift can do strange things to plants. Is that a possibility.

Will be interesting to see what colors happen next year.

How do i know if it's a sucker cane,and what do i do,just cut it off????It's coming off the base of the American.Guess i just don't understand how these things happen,especially when there is nothing close toit that even resembles what i am getting.Does that make sense???
Kathi

Suckers sprout from BELOW the graft joint. I usually have to dig away some dirt to find where the sucker is starting from since my roses are planted with the graft joint at dirt level.

The graft joint is the enlarged area. Follow the cane that had the burgandy flower to where it is attached - see if you can rip it away from the bush. If you have to cut it away, get as close as you can or new suckers will start from the same place.

If you have trouble identifying the graft joint, ask the nursery to show you one on their roses.

Thanks Iris,as soon as the ground dries a little i'll see if i can figure it out.Dh just finished watering,so it's very wet right now.Appreciate the help.
Kathi

iris changing color occurs a whole lot more often than ANYONE can explain... i know of three instances - california, texas, and mississippi - where they were transplanted from one old stand to a new spot, and they came up a different color - and NO iris person will admit that this is possible, without suggesting herbicide drift (roundup does not cause this sort of phenomenon), or a long-dormant other color suddenly appeared.
again, this DOES happen, and i wish someone would come up with a respectful answers...

Thanks OOPS,glad to hear that!!! I knew i wasn't losing my mind.I knew it wasn't from round up,as we very rarely use that stuff.Those pink ones are still blooming,they turned into bloomin fools.
Kathi

Bearded Iris, Gladiolus and Tulips are particularly prone to changing flower color.

Stress seems to play a big part in the process, somehow causing the production of certain pigments in the flower tissue to be suppressed for a time.

With a lack of the "good" pigments, the background color of the bloom is all we can see (and it was there all along, but overlaid with another shade) so the blooms appear to have "reverted" to, say, a ruddy gray-blue Iris instead of the glowing peach flower we were expecting.

Once the stress factors that have caused this to happen go away, the plants can actually produce their normal flowers once again. An overgrown and starving clump of Bearded Iris which has "mutated" might well smarten up in a year or two after being divided and moved to a site with richer soil.

Heat and cold can be short-term factors in causing perennial flowers to change. During periods of extreme heat, for instance certain flower pigments seem to break down quickly. A blossom might open in a soft lavender shade, but within a day or two it fades to more of a ghostly white. Once the weather cools down the color is retained much better -- that is, if the plant is still blooming. Some of the dark-red Daylily selections have a tendency to lose color or fade out during extreme heat. Growing them with some afternoon shade is often helpful.

Of course, self-sown seedlings, the more common "mutation", will sometimes appear in the garden and the seedlings are likely to produce flowers in shades other than the clear pink (or whatever) we see in the mother plant. If you allow the seedheads to develop on the mother plant, there is a good chance self sown offspring will appear right within the parent clump. After a few years it would then appear to have reverted. The original "mother" plant may, in fact, be just fine, although now terribly mixed up with its own progeny. Often, though, it is out-competed by its own more vigorous progeny and it fades completely from the garden.

True genetic mutations do, indeed, occur from time to time. These plants are called "sports" and are a common way new plant cultivars are discovered. Many a great new perennial has appeared spontaneously in exactly this same way, seemingly by accident rather than the result of an intentional breeding or selection program.

Joe

thanks, sir joe - that'll do. always grateful for a little logic in a weird world

Interesting. I know my purple iris have eventually turned pale almost white, I dug them up and divided every two years, tired of the pale ones I discarded all, moved the bed to a new location, and planted 5 different colors from brite pink to black,rust,tiger striped purple/white, yellow. The first year I had all the colors expected except pink, it was deep purple,
this is the second year and they are all dark purple, every clump, and they are separated by a few feet from each other. Very disappointed.

Thank you so much for your information. Our white iris have become purple.
BjAaay

My purple iris all turned pure white.