ArchangelUnmei
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Pest/fungus (hydathodes - guttation)

Okay, so I have a Ficus (of some type) and I've noticed something odd the past couple days. On some of the leaves, there seem to be little white spots. They're not bumps, just spots, and they can't be washed off with water. If I look at the bottom of the leaf, I can see the spots shining through with the light.

They almost look like pores, but they're not in a pattern, and they're on the top of the leaf too. Aren't stomali and such usually only visible on the bottom?

I'll try and get a picture if I need to, but I was hoping someone here would have an idea. Is it something I should worry about, or just a quirk?

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bonsaiboy
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It could be a scale infestation, but with no pictures, I cant be shure.
הדמיון הוא יותר חשוב מאשר ידע

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Gnome
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Location: Western PA USDA Zone 6A

ArchangelUnmei,

I believe they are natural structures. If memory serves (they are outside in the dark right now) my ficus have a row of pores along the leaf margins. I'll have a closer look tomorrow.

Norm

alexinoklahoma
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Location: Central Oklahoma

Could it be 'damage' from a sap-sucking bug? Like how aphids poke their snouts into leaves and such?

I get random tiny little bleached-out looking spots on my Ficus now and then; nothing worrisome (barely noticeable in worst-cases) but I always assumed some bug had a little meal.

Alex

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Gnome
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ArchangelUnmei,

Do they look like this? I had to cut the leaf in half to allow it to lay flat.
[url=https://img389.imageshack.us/my.php?image=ficushydathodezm8.jpg][img]https://img389.imageshack.us/img389/4032/ficushydathodezm8.th.jpg[/img][/url]
https://en.wikipedia.org/wiki/Hydathodes

Norm

ArchangelUnmei
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Yes, that's exactly it! There aren't that many, but that's exactly what it looks like.

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Gnome
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ArchangelUnmei,

OK, then you have noting to worry about, they are a natural part of the plants vascular system. As water moves from the roots to the upper portions of the plant excess water is secreted through these pores or hydathodes in a process known as guttation. You have probably seen this before on various plants but mistook it for morning dew.

[img]https://botweb.uwsp.edu/Anatomy/images/hydathodes/images/Anat0526.jpg[/img]

Norm

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