Houseplants forum→marks & white dots under leafs_Ficus benghalensis & Ficus microcarpa 'Ginseng'

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marielaf
May 10, 2020 8:42 AM CST
Hello, Garden community,

I have 3 Ficus as indoor plants (one nice Bengal fig and 2 Ginseng).
Unfortunately, it seems that the oldest leaves of all 3 plants have browns marks on their top leaf and white dots under their bottom leaves.
Please see pictures attached.

I water them when the 2-first inches of soil are dry, these days once a week,- none are in direct sunlight.
The Bengal fig is living at the far back of a room with afternoon sun from a large 'bay' window. I have noticed that recently the main leaves are loosing their strong shape and doing weird curling...
The two Ginseng are leaving in the kitchen next to a morning sunlight window, shaded by the corner of the building we leave in, so not in direct sunlight.

I have applied a neem oil treatment on the leaves with a spray & water, and rinse abundantly after 20 minutes. I also showered the leaves individually with water.

Any recommendations? is it a fungus? a pest?
or simply just part of the plant?

Thank you very much for your help and time
All the best
Marie
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[Last edited by marielaf - May 10, 2020 8:45 AM (+)]
Give a thumbs up | Quote | Post #2234049 (1)

marielaf
May 10, 2020 8:44 AM CST

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[Last edited by marielaf - May 10, 2020 8:46 AM (+)]
Give a thumbs up | Quote | Post #2234051 (2)
Name: Will Creed
NYC
Prof. plant consultant & educator
Image
WillC
May 10, 2020 8:51 AM CST
When you treat the critters, you have to apply the neem so that all leaf and stem surfaces are literally dripping wet. If you miss even a few, they will reproduce and the infestation will keep returning.

Plant pests are often a sign of some other problem such as improper light or water.
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at [email protected]
I now have a book available on indoor plant care

marielaf
May 10, 2020 8:57 AM CST
Hello Will

Thank you very much for your answer.
Coud you help me a bit more here? I would really appreciate more information :)

So, I am facing critters as a pest? This is a new word for me, English isn't my native language (French is).
Could you please confirm that I apply the neem in a spray well shaken with water inside? or should I directly apply the neem on the leaves and hand-rub them?

Any advice or more explanation are deeply appreciated :D
Thank you very much
Marie


Name: Will Creed
NYC
Prof. plant consultant & educator
Image
WillC
May 10, 2020 9:12 AM CST
Bonjour, Marie! I'm sorry the word "critters" is a slang English term that refers to any insect pest. I used it because I am not sure exactly what this pest is. But I'm not sure it matters. What does matter is how thorough you are in treating the entire plant.

I suggest that you mix up the neem with water and then spray all the leaf and stem surfaces until the solution is flowing over all of the surfaces. Be sure to get the solution in the tiny crevices where leaves attach to stems. Wiping is fine but it doesn't get inside those tiny crevices.

This is a messy task and is best done outside (out of the sun), if possible.

Bonne chance!
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at [email protected]
I now have a book available on indoor plant care

marielaf
May 10, 2020 9:20 AM CST
Brilliant, well let's try this ! Thank you very much for your time :)
Name: Will Creed
NYC
Prof. plant consultant & educator
Image
WillC
May 10, 2020 9:26 AM CST
Thumbs up
Will Creed
Horticultural Help, NYC
www.HorticulturalHelp.com
Contact me directly at [email protected]
I now have a book available on indoor plant care

marielaf
May 11, 2020 7:22 AM CST
Anyone else has more information or a guess identifying those marks+white dots?

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