Light. Plant in full sun, at least 6 hours of direct sun a day, for the best flowering and fruit.
Water. Water regularly while a young tree settles in. Too much or too little water causes problems, so err on the side of less.
Soil and feeding. Needs fertile, moist, well-drained soil. Feed with a slow-release citrus fertilizer such as Citrus and Fruit Trees fertilizer in March, June and September.
Size. Grows to about 15 ft as a small tree or large shrub. It also grows well in a large container.
Pruning. Prune only to keep the tree the size you want. On young trees, remove suckers growing from the base.
Problems to watch. Scale, aphids, spider mites and citrus leafminer feed on it, and sooty mold follows scale and aphids; treat with Insecticidal Soap. Citrus canker and greening also affect it.
Good to know. It blooms several times a season, so flowers and fruit appear together. Fruit keeps only about a week after picking.
Sources: NC State Extension Plant Toolbox: Citrus x microcarpa · UF/IFAS Extension Nassau County: Calamondin citrus tree · UF/IFAS Gardening Solutions: Citrus
