Anyone recognize these plant problems?

8 years ago

A few new issues I found while watering today. What is this white on my Panda? Doesn’t seem to be bugs. More like something on the leafs surface. Sunburn? Fungus? And these brown bits on the edges of my Lola’s leaves? The black on the tips of my Jellybean and the brown spots on them? And this beige stuff on my Jade? I left my grow light on for 2 days straight this week accidentally. Could they be burned?

Featured Answer

Gabby C (FL 9A)

8 years ago

Your plants look fine, some scarring here and there but succies are sensitive. Leaving a light on for two days could of caused some of the marks but they don't look bad. The coloring on your plants is normal, especially the white powdery stuff on your Panda. Succies like that produce the powdery stuff as a sunscreen.

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Comments (7)

Andrew (UK south coast, like 9a)
8 years ago
The damage to the Lola and the jade could possibly be caused by thrips - they do damage at the growing point and it only becomes apparent when the leaves grow out.
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rina_Ontario,Canada 5a
8 years ago
I believe that OP is referring to lighter spots on leaves - circled in photo - not the 'powdery'-looking leaves in case of Kalanchoe tomentosa:
Leaves of this plant are covered with many very fine hairs that can vary in color and give that powdery look to them.

Not quite sure what the problem is, but possibly oedema? excess fertilizer? Sunburn? - maybe, if the plant is in very strong sun. OP didn't indicate where the plant is kept, and what growing zone/climate she is. That would help...

Agree with Andrew about possibly bug damage on Lola.
Nicole Puiia
Original Author
8 years ago
Yes, the white splotches you circled on the Panda are what I was wondering about. That’s all new this week. The plants are in my bedroom for the winter under a 4ft led T8 grow light. They were watered last on january 27th so I don’t think Oedema. I had Oedema issues a few months back so I cut back a lot on waterhng. No fertilizer. So I guess that leaves sunburn? I didn’t think the grow light would do that but it brings out the colors a lot so it must be strong! I just want to make sure that whatever caused it I don’t do again. I just bought a better timer for the light so hopefully it will not be left on again
rina_Ontario,Canada 5a
8 years ago
How close are your lights? How many hours/day are they on?
Nicole Puiia
Original Author
8 years ago
6-7 inches from the bigger plants. 8-12 for the small ones. On 16 hours off 8
rina_Ontario,Canada 5a
8 years ago
last modified: 8 years ago
That sounds OK. It shouldn't be burning leaves. Did you acclimatize plants to light? I keep lights on for 12 hrs only. This one is about same distance from lights as yours:

BTW, I see perlite in your pots is discolored. That happens when perlite is wet. I know you said that you watered 2 weeks ago; but that color is telltale sign. At some time, perlite was wet, or soil it is mixed with is water retaining. What is the mix you are using made of?

There is possibility of some fungus, but it may be difficult to tell on such fuzzy plant. I am not sure if it is also on new leaves, or is it just some perlite on it? I remember seeing few similar spots on my plant, but I just left it without any treatment, and still have plant - years later.