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Four O’clock Flowers

Q.Why Are My Four O’clock’s Leaves Turning Yellow And Falling Off?

Zone 97504 | Sunshine0922 added on September 18, 2020 | Answered

They have been really healthy, however our region was hit with catastrophic wildfires. Due to the smoke, several of my plants aren’t fairing well. Could it be the same thing as my other plants??

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Certified GKH Gardening Expert
Answered on September 20, 2020

It could be due to smoke, which can clog the plant's tiny pores used to absorb carbon dioxide. Smoke can also destroy chlorophyll, thereby reducing photosynthesis. Try rinsing the leaves with water, and applying fertilizer to give it a boost.
I would also examine the leaves for insect pests (though smoke can deter them).


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