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A picture of a Round Kumquat

Round Kumquat

Citrus japonica

Also known as

Marumi Kumquat, Nagami Kumquat

Full Sun
Moderate care
Moderate watering
Frost Hardy

9a

USDA zone

-7°C

Minimum temperature

Expected size

Height
Spread

4.5m

Max

5m

2m

Min

2m

Fruiting

  • spring
  • summer
  • autumn
  • winter

Fruits are ripe when their skin is a deep orange color and are slightly soft to the touch. Cut off the fruit with a knife or scissors so you do not damage the plant.

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A photo of Round Kumquat
A photo of Round Kumquat

Round Kumquat Overview

Kumquats are small evergreen trees or shrubs that produce tangy fruits with edible skins that are rich in vitamin C, vitamin A and potassium. A well-maintained kumquat tree can grow hundreds or thousands of fruits yearly. The flowers are fragrant and pretty. Kumquats are popular ornamental plants. The fruits can be used in various dishes, including salads, or made into marmalades, preserves and liqueurs.

Common problems with Round Kumquat

Root rot: Avoid excess moisture and make sure the soil is well-draining before planting. Avoid piling mulch around the base of the tree. Aphids, mites, scale, mealybugs, and caterpillars are also problems.

Round Kumquat Companion Plants

Strong herbs like rosemary or wild garlic will keep pests away!

How to propagate Round Kumquat

Cuttings

Kumquat can be vegetatively propagated using rootstock of another citrus fruit or cuttings (using a rooting hormone). Graft kumquat cutting on the growing rootstock.

Seed

Not easy to grow from seed. Do not dry seeds. Sow 2 cm deep in moist, well-drained potting soil. Seedlings should appear in 2-4 weeks. Graft the seedlings with good bearing wood.

Layering

Air layering

Budding

Propagate from seed or cuttings and varieties by budding onto rootstock in autumn or spring.

Special features of Round Kumquat

Pot plant

A large pot with very good drainage is needed that is raised off the ground to improve drainage and air circulation. Cover plants with a blanket in winter in very cold climates or take indoors.

Hedge plant

Can be clipped into a neat hedge.

Attractive flowers

Fragrant flowers that bloom either singly or clustered.

Attractive fruits

Attractive leaves

Dark green, glossy leaves that form a vase-like or rounded canopy.

Indoor plant

Other uses of Round Kumquat

Culinary

Edible

The fruit can be eaten raw or cooked or used to make marmalades and jellies.

Medicinal

Mineral and vitamins will keep you healthy preventing diseases like scurvy.

Fruits

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