Seeds planted in June 2023, transferred to bigger space at the age of 2 month, watered regularly. Seem to be dying, lower leaves are dry and falling. Is there a way to save them?
Make sure all of your containers have drainage holes and can drain very thoroughly. Though they need to stay moist, constantly saturated soils can lead to root suffocation. make sure the soil is well draining, and add perlite in the next potting to be sure that soil is light. Other than these things, I see nothing wrong with the setting. Just a possible root saturation.
This article will help you to grow your trees:
https://www.gardeningknowhow.com/ornamental/trees/tea-trees/tea-tree-in-container.htm
I just noticed this weird dripping red resin like balls on four of our eucalyptus trees located in Paso Robles, Ca. I don't want to lose these trees and I don't want this problem spreading to our other trees.
This is bad news. This is an insect infestation of borers. Once inside your tree, they are next to impossible to eradicate. Proper irrigation practices will be the best way to prevent them. This article will offer information
https://www.gardeningknowhow.com/ornamental/trees/eucalyptus/eucalyptus-tree-leaking-sap.htm