Why is my calamondin tree not bearing fruit or flowers? I grew it from seed and it's more than 10 years now. Is there any gender in this plant?
Calamondin grown from seed should produce fruit after it's 2 years old. The fruit may not be true to seed.
I would look at amount of sunlight, watering and nutrients and make adjustments.
The links below will help refresh you on the care requirements.