The white spots look like evaporated irrigation water to me. This time of year in our area minerals become high in the water and when the water evaporates the mineral is left behind, I see this too. This is a tough time for the species which prefers rainfall and is intolerant of alkaline soil and water. Unfortunately the plant also seems to want to flower before our rainy season gets started. Like most acid-lovers it tends to have iron deficiencies which may be a limitation but there are foliar and drenches available. It looks like you had it tented for cold, maybe just cold damage of tender growth.
I have mine surrounded with other trees and some cassava waiting for warmer weather when I will reduce the cover but the site escaped most damaging cold this year.
Topic: Grumichama new growth looks sickly. (Read 1584 times)