How to Grow Calamondin Orange
Wikimedia Commons
Calamondin Orange
Citrofortunella microcarpa
fruitThe calamondin is a small citrus tree producing tiny, bright orange fruits with thin, edible skin and tart, acidic juice. It is commonly grown as an ornamental houseplant in temperate climates and in gardens in tropical and subtropical regions. The tree is prized for its decorative appearance, fragrant white flowers, and year-round fruiting potential.
When should you plant Calamondin Orange in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Calamondin Orange timeline · Pittsburgh, PA (Zone 6b)
-
Plant Calamondin Orange
Around Apr 17Near Pittsburgh's average last spring frost.
-
Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
-
Harvest Calamondin Orange
Late summer into fallBefore the first fall frost (≈ Nov 8)
Sample dates for Pittsburgh, PA. Sign up to get exact Calamondin Orange dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 9b-11; can be grown indoors or in containers in cooler zones
Sign up free to see if Calamondin Orange grows in your zone — and get a personalized planting timeline.
Get my Calamondin Orange timeline →Growth Stages
Establishment
3-6 monthsYoung tree developing root system and establishing branching structure; 12-24 inches tall
Water consistently, provide support stake, protect from wind and extreme temperatures, avoid fertilizing immediately after planting
Vegetative Growth
6-12 monthsRapid stem and leaf development; tree grows 12-24 inches per year; glossy green foliage emerges
Apply balanced citrus fertilizer monthly during growing season, prune to shape and remove dead wood, ensure adequate light
Flowering
2-4 weeks (multiple flushes possible per year)Fragrant, small white flowers appear in clusters; flowers are self-fertile and attract pollinators
Maintain consistent watering to prevent flower drop, reduce nitrogen fertilizer to encourage flowering, do not disturb blooming flowers
Fruiting
3-4 months to ripenessSmall marble-sized green fruits develop and gradually turn bright orange; fruits ripen 3-4 months after flowering
Thin fruits if overcrowded to encourage larger individual fruits, maintain steady watering, apply potassium-rich fertilizer, protect from pests
Mature Production
OngoingEstablished tree (3+ years old) produces abundant bright orange fruit; may flower and fruit year-round in ideal conditions
Prune lightly after harvest to maintain shape, fertilize 3-4 times per year, monitor for pests and diseases, can keep fruits on tree for weeks after ripening
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
-
Spray with water to dislodge, apply neem oil or insecticidal soap, increase humidity
-
Remove with alcohol-soaked cotton swab, apply insecticidal soap, prune heavily infested branches
-
Scrape off manually, apply horticultural oil spray during dormant season, encourage natural predators
-
Remove affected leaves, apply spinosad or neem oil, maintain tree vigor
-
Spray with water, use yellow sticky traps, apply neem oil or insecticidal soap
Uses
Juice and Acidulant
CulinaryThe tart juice is used as a souring agent in Filipino cuisine, cocktails, and Asian dishes, similar to lime or lemon. The juice can be extracted and stored frozen for year-round use in cooking. [source]
Marmalade and Preserves
CulinaryThe thin, edible skin and high pectin content make calamondin excellent for making marmalade, jams, and preserves. The entire small fruit can be used whole due to the sweet, thin peel. [source]
Natural Cleaner
HouseholdThe acidic juice is an effective natural cleaning agent for degreasing, removing stains, and disinfecting household surfaces. It is non-toxic and leaves a fresh citrus scent. [source]
Decorative Houseplant
OrnamentalThe compact size, glossy foliage, fragrant flowers, and bright orange fruits make it a popular ornamental container plant for indoors or patios. Trees remain productive and attractive year after year. [source]
Vitamin C and Antioxidants
MedicinalCalamondin fruits are rich in vitamin C and antioxidants, traditionally used in folk medicine to boost immunity and aid digestion. The fruit juice and peel contain beneficial phytonutrients. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest fruits when fully orange and firm to the touch (usually 3-4 months after flowering); fruits can remain on tree for several weeks after ripening without quality loss. Pick by hand or cut with pruning shears, leaving short stem. Can harvest year-round in tropical climates; in cooler zones, most fruit ripens in late fall and winter.
Fun Facts
- 🌱 Calamondin is a natural hybrid between a mandarin orange (Citrus reticulata) and a kumquat (Fortunella), combining traits of both parents; the name 'Citrofortunella' reflects this hybrid origin.
- 🌱 Unlike most citrus, the calamondin's thin skin is sweet and edible while the flesh inside is very tart and acidic—the opposite of most oranges—making it ideal for eating whole or for juice extraction.
- 🌱 Calamondin trees can produce fruit year-round in tropical climates and will flower and fruit indoors, making them one of the few citrus plants suitable for consistent indoor container cultivation.
Join 30,000 gardeners planning their gardens with LizPlants.
Get your personalized Calamondin Orange planting timeline
Tell us your zip code and we'll calculate exactly when to start Calamondin Orange seeds, transplant seedlings, and harvest — based on your USDA zone and local frost dates. Includes calendar reminders and printable task lists. Free to start.
Get my Calamondin Orange timeline →