White wash

[Voglen]

I would like to give my fruit trees and old currants white wash, and shed inside to detter spiders. I am confused which product to buy? Is calcium hydroxide same as garden lime?

[burnie]

I don't understand why you wish to paint your fruit trees and bushes?

[Scarlet]

Powdery mildew issues?

[Voglen]

I want to do mostly for protection. I have few quite old trees.

[Scarlet]

Are you in the UK? What trees have you got? Protection against what?

[Mark Rand]

Calcium oxide is quick lime, Calcium hydroxide is slaked lime, Calcium carbonate is garden lime. They gradually convert one to the other, left to right, with the addition of water and carbon dioxide from the air.