Never seen this before

Bondad

Seedling
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South Carolina, US
IMG_20220120_203246.jpg
I have these white patches on underside of my ficus. I'm very familiar with white fly and similar pests. This is different, it's almost like when salt evaporates off a surface. You can't remove the white patches like you can with white fly or thrips. Any info or ID appreciated
 

Shibui

Imperial Masterpiece
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Yackandandah, Australia
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9?
Looks very like residue from water evaporating. Calcium is a common impurity in many water sources and I see many posts from USA about high pH or high calcium in municipal water affecting plants in various ways.
Water here has calcium so I get similar white calcium deposits on the leaves in warmer weather, especially in the misting bed for cuttings.
Check the water report for your water supply to see what calcium levels or other minerals are present.
 

Bondad

Seedling
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Looks very like residue from water evaporating. Calcium is a common impurity in many water sources and I see many posts from USA about high pH or high calcium in municipal water affecting plants in various ways.
Water here has calcium so I get similar white calcium deposits on the leaves in warmer weather, especially in the misting bed for cuttings.
Check the water report for your water supply to see what calcium levels or other minerals are present.
YES, Thank you so much. Wasn't even thinking in that direction. Should be able to make watering source adjustments to correct
 

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