How to grow Kumquat tree

Kumquat tree growing shrub or tree of the genus Citrus also known as Cumquat, Kumquat tree grow as perennial evergreen plant with edible fruits also used as ornamental plant for the leaves and the fruits and can grow as dwarf or bonsai, It can grow in tropic, subtropical or mediterranean climate and growing in hardiness zone 8+.

Leaves color dark green in oval shape.

Flowers white with yellow stamen.

Kumquat fruit

Fruit taste sour with little bit bitter, fruit size ~1 -4 cm and color is orange, inner fruit divided by segments, the segment cover with soft thin layer, it containing the pulp (little cones covered with a thinner layer). Rind color orange, the edible part is especially the rind eaten raw, the taste is sweet and little bit bitter also used as flavor and fragrant

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How to grow Kumquat tree – grow and care:

How to care for kumquat tree:
Frost free, well drained, pruning once a year

What is the best way to start growing Cumquat plant:
Plant / Seed – explanation bellow / Cutting

Is it necessary to graft or use vegetative reproduction?
Yes, necessary

Difficulties/Problems with growing:
When the tree young very sensitive to citrus leaf miner, thorns

Planting season:
Spring to summer in hardiness zone 8-10a, spring or autumn hardiness zone 10b-11a, possible  also in summer and winter the main problem it’s hot and cold days that might cause future problem and even kill the plant, hardiness zone 11b+ planted all year

Pests and diseases:
Citrus leaf miner, aphids, citrus foot rot, ant, citrus gummosis

Pruning season:
When there is no fruits on the branch

How to prune a kumquat tree:
Dead branch, cross branch, too much density

Size of the plant:
0.3-4 m (1-12  feet), possible to grow it as shrub 0.3-1 m (1-3 feet) or tree 1-4m (3-12 feet)

Growth speed in optimal condition:
Medium growing in perfect condition can grow fast

Irrigation water management requirement:
Small amount of water

Light conditions in optimal condition for growing:
Full Sun

Is it possible to grow indoor?
No, but commonly grow indoor as bonsai on the window

Growing is also possible in a planter /flowerpot / containers:
Yes, when grow in container need to make or take dwarf tree or bonsai, even bonsai can bear fruits, need to use potting soil or mix of peat soil with perlite, drainage and holes in the pot important, don’t let the water stand in the bottom of the pot, need ever few years to switch the soil of the pot and better to start with pot that will be 20% bigger than the roots ball and every time to change it with new soil, no point that the soil will stay in the pot for no reason just lose the viability

Blooming information

When does flowers bloom?
Summer / Autumn

General information about the flower
Flowers are white with yellow stamen

Thinning / Deadheading of Kumquat tree Blossom:
The first year should thinning the flowers

Pollination is done by:
Bees, self-pollination

Edible Fruits

When do kumquat trees bear fruit
Autumn / Winter / Spring rarely but possible to keep the fruits until spring

Pests or diseases in Cumquat fruit:
Citrus stubborn disease, citrus black spot, alternaria

What can be done with big quantities of Kumquat fruit?
Eat, juice, the rind used fragrant, fruit leather, sugary rind

Work requirements on the fruit:
Pick up (sometimes cut brunches that grow into the fruit)

How long does it take for a kumquat tree to bear fruit?
1-3 years

Ripening of fruit
Possible to pick up the fruit before and let them ripening them in the house

How to grow a kumquat tree from seed

Sowing requirement:
Moist soil, hot weather, sunny location

Saving seeds until sowing:
Dry, dark location in room temperature

Sowing season:
Spring (possible in the autumn in hardiness zone 10b+)

Planting spacing:
Better in separate pots

Depth of Sowing:
2cm (1inches)

Conditions for seeds germinate:
Don’t let it dry, rich soil and sunny location

Watering requires for Seeds:
Average amount of water

Germination time:
2-4 weeks

Condition of seedling:
If there is Citrus leaf miner in one of the trees in the area better to put it in greenhouse or indoor

Scientific name:

Citrus japonica

Alternative names: Cumquat, citrus kumquat

Blooming Seasons

Edible Parts

Culinary Uses

Flower Colors


Harvest season

Ornamental parts

Plant growing speed

Plant life-form

Plant uses

Planting season

Plants sun exposure

Watering plants

Hardiness zone