I planted a Oleander bush in zone 10. 3 weeks ago. the leaves are starting to turn yellow. What would cause this problem ?. Thank you
Check/for... to much light .. not enough light... to much water.. not enough water... nitrogen, or iron or magnesium or zinc defficiency .... soil compacted... root damage when planted .. systemic or root fungal infection.
Check growing condition & stresses you will solve problem yourself