Irises forum→Temperatures Influence irises' color

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Dec 28, 2019 8:05 AM CST
I posted in Facebook's Iris Lovers a couple of photos of my rebloomer, Starring Encore, which was taken in mid-November. At that time, Starring Encore's blossoms were a definite raspberry color. Even for the Phoenix area, the outside temperature was 8-10 degrees warmer than usual. In mid-December the blossoms were purple with hints of red. I asked folks on Facebook's Iris Lovers to explain why the color changed. Their strong consensus was the change in temperature. Two photos of the raspberry colored blossoms are from mid-Nov. The purple one is from mid-Dec. The colors in these photos were not edited with Photoshop.
Thumb of 2019-12-28/marysp/8c8265

Thumb of 2019-12-28/marysp/c34254

Thumb of 2019-12-28/marysp/daaa63

Name: Robin
Melbourne, Australia (Zone 10b)
Region: Australia Irises Garden Photography Cat Lover Seed Starter
Dec 28, 2019 2:53 PM CST
I think lighting and sun vs shade makes a big difference too. The foliage in the last photo is a different colour too.
Name: Elsa
Las Cruces, New Mexico (Zone 8a)
Region: New Mexico Region: United States of America Irises Region: Southwest Gardening Dog Lover
Dec 28, 2019 7:15 PM CST
I have this gut feeling that rain levels and type of fertilizer used can influence colors as well.
I think the people who grow Irises are about as special as the flower itself!
Name: Tom
Southern Wisconsin (Zone 5b)
Irises Vegetable Grower Butterflies Region: Wisconsin Keeps Horses Cat Lover
Dog Lover Keeper of Poultry Daylilies Celebrating Gardening: 2015
Dec 29, 2019 5:33 AM CST
I have a friend in the Phoenix area that I sent some irises to. When she sends me pictures of the blooms sometimes they are so different I can hardly recognize them. Others are more similar to the colors they are here. I'm sure it's due to the temperature differences.
Voltaire: "Those who can make you believe absurdities, can make you commit atrocities,"
Name: Evelyn
Sierra foothills, Northern CA (Zone 8a)
Garden Procrastinator Irises Bee Lover Butterflies Plant and/or Seed Trader Region: California
Cat Lover Deer Bulbs Foliage Fan Annuals Seed Starter
Dec 29, 2019 11:46 AM CST
My first photos of Haunted Heart were much deeper in color after the rain and cool days. Then, when it warmed up the blooms were much lighter.

"Luck favors the prepared mind." - Thomas Jefferson
Name: Sherry Austin
Santa Cruz, CA (Zone 9a)
Region: California Irises Keeper of Poultry Roses Dragonflies Birds
Bulbs Foliage Fan Photo Contest Winner: 2015
Dec 29, 2019 12:04 PM CST
You might also factor in the freshness of the flower, amount of sun or daylight hours, time of day, Humidity, and the type of camera, as all will affect your flowers and pictures. My phone camera "fabulizes" colors, making them much brighter. I take that into account if I'm wanting to show an accurate color of a flower. That said, 'Starring Encore' does change /fades for me as it ages... and is a bit deeper in it's fall bloom. I think temperature affects the brightness in that it doesn't fade, or age as quickly, and retains its just-opened look, or bud stage color longer. Some varieties change a lot as they age... certain varieties of Burseen's come to mind.
The surest sign that intelligent life exists elsewhere in the universe is that it has never tried to contact us.
Name: Leslie
Durham, NC (Zone 8a)
Region: North Carolina Irises Cat Lover Garden Photography Enjoys or suffers hot summers Peonies
Celebrating Gardening: 2015
Dec 29, 2019 1:06 PM CST
I think aging plays a big factor in the Haunted Heart pictures. Mine fades after opening.

While I agree that temps can change a iris' color, I think that shade versus sun and type of camera also are big influences. Type of soil and minerals within the soil do affect brightness, but that would not be a factor in the same iris.

An example of how lighting plays a factor can be shown in a few pictures I took of Burseen's Virtual Reality.

Early morning, just opened: Thumb of 2019-12-29/Lestv/3f1a58 In sun: Thumb of 2019-12-29/Lestv/b59980

In full shade: Thumb of 2019-12-29/Lestv/eab543

Shade makes it look like an entirely different iris, but it is a bud from the same stalk as the other 2 taken within a 3 day period. A bloom that opened a couple days later was a shade of color between the first one shown and the dark shade one. The dark shade one did have some frost damage and did stay a bit darker than the other blooms. So in this case you could say that both lighting and temperature affected it's color.

"The chimera is a one time happenstance event where the plant has a senior moment and forgets what it is doing." - Paul Black

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