The Q&A Archives: Calamondin Orange tree not producing fruit

Question: We have a Calamondin Orange tree which has not produced any fruit for several years. What can we do to stimulate fruit production? Also, what is the best type of fertilizer to use on it? The tree is kept indoors as a house plant (oranges don't grow well in Minnesota!). Ernie Johnson Eden Prairie, MN

Answer: Your orange trees need plenty of bright light in fall and winter, cool temperatures, high humidity from daily misting and less water when they are inside the greenhouse allowing the top surface to dry between waterings. Fertilize every 6 months with a time release fertilizer such as Osmocote 14-14-14, also twice a month fertilize with a dilute strength liquid fertilizer such as Miracle Grow. In spring, gradually move the tree outside for the summer and gradually move it back inside in fall. Hand pollinate the flowers by rubbing a Q-tip cotton swab in the flowers in fall and winter to insure fruit.

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