Howdy,
Oleander is a very hardy shrub that can adapt to many types of soils. The yellowing leaves could be caused by lack of nutrients or a fungus. Poor drainage or over watering are usually the causes of this fungus.
I would recommend taking a shovel and adding either "Amend" or "Gypsum" to the soil and break it up real good.
This should give you the results of your looking for until your Oleander has matured.
Happy Gardening,
Coach Dave
Home Depot Garden Expert
Oleander is a very hardy shrub that can adapt to many types of soils. The yellowing leaves could be caused by lack of nutrients or a fungus. Poor drainage or over watering are usually the causes of this fungus.
I would recommend taking a shovel and adding either "Amend" or "Gypsum" to the soil and break it up real good.
This should give you the results of your looking for until your Oleander has matured.
Happy Gardening,
Coach Dave
Home Depot Garden Expert