How to Grow China Orange Plant (Calamondin) in a Pot
The “china orange” plant sold in every winter nursery, covered in tiny orange fruit, is usually calamondin (calamansi), a small sour citrus that lives happily in a pot. To grow a china orange plant well: keep it in the sunniest spot you have, water only when the top of the pot dries, feed it lightly all year, and cover it on frost nights. It flowers and fruits on and off through the year. If your fruit is oval and sweet skinned, you probably have a kumquat instead; both are covered here.
The short version
- What it is: calamondin, a small evergreen citrus with round, sour, thin skinned fruit 2.5 to 4.5 cm across
- Pot: 12 to 16 inches (15 to 30 litres) for an adult plant
- Sun: 6 hours or more; the more, the more fruit
- Plant or repot: February to March, or October to November on the plains
- Fruit: nursery plants usually already carry fruit; new fruit can take months to colour
- Best buy: a rooted cutting or grafted plant; seedlings are slow
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China orange, calamondin or kumquat: which do you have?
| Feature | Calamondin | Kumquat |
|---|---|---|
| Fruit shape | Round, like a tiny tangerine | Oval or round, olive sized |
| Taste | Very sour juice, fragrant peel | Sweet peel, tart flesh, eaten whole |
| Use | Sharbat, squeeze over food, pickles | Eaten fresh or candied |
| Cold | Somewhat tender | Somewhat tender |
Care for both is almost the same. The RHS lists calamondin and kumquat among the easier citrus to grow in containers, and notes kumquat can carry a heavy crop without thinning.
Where will it fruit?
| Zone | Verdict | Notes |
|---|---|---|
| Coastal: Karachi | Plant | No frost, steady humidity; it flowers and fruits well |
| Punjab plains: Lahore, Faisalabad, Delhi | Plant | Cover or move to a wall on frost nights; light shade for the pot in June |
| Hot dry: Multan, Sukkur, Bahawalpur | Plant, with care | Shade the pot, not the leaves, from 45°C afternoon sun; water daily in peak summer |
| Sub-humid: Islamabad, Peshawar | Maybe | Needs a sheltered warm spot or a veranda through the coldest weeks |
| Hills | Skip outdoors | Only as a sunny window plant, with modest fruiting |
Sources disagree on exactly how much cold calamondin takes, and the RHS advises keeping it warmer in winter than a lemon. Treat it as frost tender: light frost burns leaves and young fruit, a hard freeze can kill a potted plant.
Seed, cutting or graft: what should you buy?
Calamondin seeds do sprout, but seedlings take several years to fruit. Cuttings are the recommended home method in extension notes, and the RHS calls semi ripe cuttings the easiest way to propagate citrus.
- In late spring or the monsoon, take a 10 to 15 cm piece of this year’s firm but still green stem.
- Remove the lower leaves and cut the remaining ones in half to reduce water loss.
- Dip the base in rooting powder if you have it, and push into damp sand mixed with cocopeat.
- Cover with a clear bag, keep in bright shade, and air it daily.
- Expect roots in several weeks; new leaves are the sign. Pot on when roots show at the drainage hole.
Air layering on a branch of an existing plant also works well in the humid months. For fruit soon, buy a nursery plant that already carries fruit. That is proof it is a fruiting type, not a seedling.
Pot, mix and repotting
Use a pot only slightly larger than the root ball; citrus in a huge pot of wet soil sulk. A mix of 2 parts soil, 1 part compost and 1 part coarse sand or brick grit drains well; the RHS suggests a soil based mix with about a fifth grit for citrus. Our potting mix guide explains the ratio. Repot every two to three years in February or March, moving up one size.
Watering and feeding through the year
| Season | Water | Feed |
|---|---|---|
| Dec to Jan | When the top 3 to 5 cm is dry; err on the dry side | Light balanced feed monthly, or compost top dressing |
| Feb to Apr | Every 2 to 4 days | Nitrogen richer feed as new growth starts |
| May to Jun (45°C) | Daily; mulch the top, shade the pot | Continue lightly |
| Jul to Sep (monsoon) | Only when dry; tip out saucers | Light feed |
| Oct to Nov | Every 3 to 5 days | Switch to a balanced feed |
The RHS advice for citrus is to feed all year, with a nitrogen richer feed in the growing season and a balanced one in winter, and it names overwatering as a common problem. Yellow leaves with green veins usually mean a micronutrient shortage; a citrus feed with trace elements helps. More detail is in our fertiliser guide.
The rule that keeps the fruit on: do not bring it indoors for weeks
Many people move their gift calamondin into the drawing room for winter. After a few weeks in low light, it drops leaves, flowers and young fruit. Keep it outside in the sunniest spot and only move it under cover for the actual frost nights. A south wall or a sunny veranda is ideal.
Why is my china orange plant not fruiting?
- Not enough sun: the most common reason. Six hours minimum.
- Kept indoors: flowers and young fruit drop in dim light.
- Overwatering: yellow leaves, root rot, no flowers.
- Heavy pruning: flowers form on the tips of new side shoots, so hard cuts remove them.
- A seedling plant: it may need several years before it fruits.
Pruning, pests and problems
Prune lightly in February or March once frost is over: remove dead twigs, crossing branches and any shoots from below the graft joint. For timing across fruit trees, see our winter pruning guide.
- Scale insects: brown or white bumps on stems with sticky leaves. Scrape off, then wipe with soapy water.
- Citrus leaf miner: silvery trails in new leaves. Mostly cosmetic on adult plants; pinch off badly hit shoots.
- Aphids: on soft new growth. Wash off.
- Citrus caterpillars: bird dropping like larvae on leaves. Hand pick.
Harvest and use
Calamondin fruit can take months to ripen and colour. Pick when fully orange and slightly soft; green fruit is usable for juice but sharper. Squeeze into water with sugar for sharbat, over fish or chaat, or slice into a quick pickle. Lemon growers will find the routine familiar; see lemon plant in a pot.
Calamondin stems carry thorns on some plants; wear gloves when pruning. Citrus juice or peel on skin followed by sun can cause dark patches or blisters, so wash hands after handling peel outdoors. Read labels and wear gloves for any spray beyond soapy water.
More container fruit options are compared in fruit plants in pots and across Kitchen Garden.
China orange plant questions
What is the china orange plant called in English?
It is usually calamondin, also sold as calamansi. Some nurseries also call kumquat a china orange, so check the fruit shape and taste.
How do you care for a china orange plant at home?
Give it full sun, water when the top few centimetres dry, feed lightly all year, and protect it on frost nights. Keep it outdoors rather than indoors.
Can I grow a china orange plant from seed?
Yes, but seedlings take several years to fruit. A rooted cutting or nursery plant fruits much sooner.
Can china orange grow in pots?
Yes, it is one of the best citrus for pots. Use a 12 to 16 inch pot with fast draining mix.
Why are the leaves of my china orange falling?
Usually low light indoors, overwatering, or a sudden cold night. Move it to sun and let the pot dry a little between waterings.
Can you eat china orange fruit?
Yes. Calamondin is very sour, so it is used for juice, sharbat and pickles. Kumquat is eaten whole, peel and all.
When should I repot a china orange plant?
February to March, every two to three years, into a pot only one size bigger.
Is china orange the same as kumquat?
No. Both are small citrus sold under the same name, but calamondin has round sour fruit and kumquat has oval fruit with a sweet peel.
China orange ka paudha kaise lagaye?
Nursery se phal wala paudha lein, dhoop wali jagah gamle mein rakhein, mitti sookhne par paani dein aur pale wali raaton mein dhak dein.