New member here. I have a 4/5 year old blood orange tree, which I'm growing indoors. Although it's quite tall (possibly 8-9 feet) it refuses to flower. I feed it, put coffee grinds in the soil (for acidity) and pray... Someone said it needs to go outdoors in the summer for a good dose of sunshine.
Hi there .
I work in a nursery that specialises in citrus and have grown them commercially for 13 years. chances are that if your tree is in a warm area it will not initiate flowers. citrus do require a period where the night temperature drops below 10 degrees centigrade . The plant also would require good light levells. Try putting it out next summer feeding it with a high nitrogen fertilizermarch to october,and a balanced one overthe winter if the temp is above 7degrees. to keep the leaves green a dose of maxicrop monthly will do wonders. good luck.