Has my avocado been killed by the Redbay Ambrosia Beetle?
1: How much has the tree wilted?
a few leaves dry
one or few branches wilted
many or all branches wilted
2: Sticky brown dried sap on bark?
sap patches present
no conspicuous sap on bark
3: White sawdust "noodles" on bark?
sawdust present, tree dead over 2 months
sawdust present, tree recently wilted
no sawdust visible
4: Dark fungal streaks under bark?
streaks present
no streaks, surface under bark yellow