Unhealthy Citrus Trees

Question From: 


Nature of problem: 
Lemon tree / Orange tree


Type of Plant (if known): 
sorry unsure


Symptoms of Plant Illness (please try NOT to diagnose your problems yourself): 
Lemons are very dry (i.e not juicy) and brown coloured. Oranges are very sour


Soil Type (e.g. sandy, clay or loam) OR Potting Mix Type: 


How often do you water the plant:
twice a week


How many hours of sunlight does the plant get each day:
PLENTY! The trees are placed under direct sunlight


What type of plant is it:
Not sure


How long since you planted it:
Lemon tree- approx 12 years. Orange tree – over 20 years


Have you fertilised? If so, with what and when:


Is the plant indoors or outdoors: 


What other treatments have you given the plant: 

Upload photo if available: 

Other Comments: 
Hi Burke,

I have a lemon tree that produces lots of lemons, however they are very dry (done have much juice) and are brown coloured inside.

I also have an orange tree that produces lots of oranges, healthy looking, however they are very sour.

Any advice would be highly appreciated.

I have attatched some photos.



Answer: Hi Heirserhan,   There are several possible causes of these problems. You simply must fertilise all citrus twice a year with citrus food – a full dose in August and a half dose in February. Another possible cause is grass or any groundcover growing under the canopy, this causes great stress for the plant. Lastly, stink bugs sucking the juice out of the fruit. Stink bugs are a dark bronze to orange colour and grow to about the size of a thumbnail. They can be controlled with any bug spray.   Don