Posted by: PMGDD | October 6, 2021

Rain marks on flowers

From: Dee Goforth <>
Sent: Tuesday, October 5, 2021 8:41 AM
Subject: Re: FW: Rain marks on flowers


I love a good mystery too!

The rain marks on the morning glory petals are definitely intriguing – and beautiful. An old 1913 paper reported that acid rain droplets left brown spots on the petals, so it seems morning glories may have a greater sensitivity. The attached document from the New York Times discusses the effect of normal fluctuations in pH levels on the colour of their petals.

From: Jim Saunders <jimsaunders809>
Sent: Saturday, October 2, 2021 10:28 AM
Subject: Re: FW: FW: FW: Rain marks on flowers

Looking at Jessica’s photos, I also see water droplets near the edge of a leaf in50444801. I found the following in “Guttation – how plants deal with too much water” –

“Guttation occurs when a plant oozes water and minerals out from perfectly healthy leaves, stems, and sometimes even flower petals.”


From: Jessica Bowie <jbfitjessica>
Sent: Thursday, September 30, 2021 2:32 PM
Subject: Re: FW: FW: Rain marks on flowers

I see what you mean! I wonder if both could be happening. In picture 50398209 if you zoom in you can see that the pink marks are larger than the remaining droplets indicating possible pigmentation change.

I love a good mystery!


Good point Jessica. I wonder when the flower dried out if the original colour returned?



Morning Glories.docx

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