How to Grow Kumquat (Guide + Care Tips)

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The kumquat tree is a small evergreen plant that produces small, sweet, and sour citrus fruits. Kumquat, also called cumquat, is a fruit with a thin skin with a sweet flavor, and the flesh is sour. If you consume the entire kumquat, including the skin with all the skin, the taste is thrilling for your palate! Find out how you can grow the kumquat our kumquat tree maintenance guide.

Kumquats are grown as ornamental trees and as food tree production. They can remain at the top of the tree for an extended time, which makes these trees attractive to have in your garden. The dwarf varieties are great to be grown in pots or containers, which is why they can be relocated into the house during winter in colder climates.

How to Grow Kumquat – Guide

  • Dig a hole twice as large as the container for kumquats and just a little larger than the container. The hole for planting can be filled with compost from your garden and not manure since manure could burn the delicate roots of the kumquat tree.
  • Then remove the Kumquat from the pot, and gently remove the lower roots.
  • Then place the kumquat into the pot, and ensure that it is planted at the same level it was when it was in its pot. This is crucial because digging deeper into the soil could cause the kumquat tree to root.
  • Then fill the hole around the kumquat soil. Then gently, however, tap the area.
  • Now is the time to water the Kumquat tree. The watering helps the roots establish themselves in the soil.
  • Finally, use organic mulch with a thick layer of 1 to 2 inches (3-5 cm). Mulching helps keep moisture in the soil and also safeguards the soil. It is essential to leave a space around the trunk to ensure that the mulch doesn’t reach the kumquat’s root, which could lead to the tree’s decay.

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You might also find this article interesting: How to Grow a Mimosa Tree From a Cutting?

Kumquat Tree Care

Kumquat trees (botanical Genus Fortunella) are tough trees once they have been established. They are resilient to cold and drought and diseases and pests. They meet all the criteria for a fruit-bearing tree to grow in your home. We’ll now learn about the best conditions for growing kumquats and the best ways to take care of them.

Where to grow kumquats

Kumquat trees are a favorite of warmer climates but can withstand cold temperatures up to 18 degF (-7degC). The warmer the climate, the sweeter the fruits will taste. They also can grow at temperatures that reach 100+degF (38+degC).

In the US Kumquat trees can be planted in zones 8b-11. However, they prefer subtropical and warm temperate climates.

It is essential to have the right soil conditions for the growth of kumquats.

Kumquat trees can grow in all soil conditions; however, they prefer neutral pH soil.

It is crucial to have good drainage in the soil to ensure that roots don’t get rotten. While many soil types are suitable but heavy clay soils is a problem. Consider an elevated garden bed or a pot that has adequate drainage holes.

It is important to have sun exposure for growing kumquats.

The sun’s rays are essential to ensure a healthy kumquat plant. Choose a location in your garden where the kumquat tree can enjoy the all-day sun for 6-8 hours or more during the day. They prefer a location that is protected from winds.

Watering kumquats

A kumquat that has just been planted plant requires more frequent watering. It is dependent on your climate. Every second or third day over the first couple weeks can help the tree establish itself.

Once the kumquat has been established, the amount of watering is decreased to twice per week in summer and every week during winter. It will depend upon the weather. If they get steady rain, the kumquats will not require additional water.

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A good guideline is to allow the first 2-3 inches of the soil to drain before you water it again.

Kumquat trees grown in containers or pots will require more frequent irrigation as they dry faster than those grown in the ground.

You might want to read this also: Best Fruit Trees to Grow in Utah

The habit of growth for Kumquat trees

Kumquat trees can reach 6-16 inches tall (2-5 meters); however, they can be cut back to shorter shrubs at heights of 6 inches (2 meters). They can reach six feet (2 meters) in width.

The pollination process of kumquat trees

Kumquat trees are self-pollinating. It only takes one tree to produce plenty of delicious fruits.

If you’re growing the kumquat in your home, it is necessary to pollinate the flowers manually since there are no insects to perform the task for you. It’s easy to do by using a small brush. Apply a gentle stroke to the flower, then move on to the next flower, and repeat the process. Keep doing this throughout the day during the bloom.

Pruning kumquats

The ideal time to trim the kumquat tree is following the ripened fruit, but pruning can be performed anytime during the winter.

The following fruiting is a good time to examine dead branches. Remove them. Cut off any sprouts that are growing at the base, cut off branches that cross each other, and remove several branches at the top of the canopy to let more light enter the canopy.

If not, it is essential if you need to keep the tree smaller and form the tree.

Kumquat Trees Fertilizing

Like all citrus trees, they need regular fertilization to ensure they are healthy. Feeding them three times per year using an orange fertilizer is recommended. Mulching with compost and organic mulch can also help feed the plant and protect the soil. Make sure the mulch is not touching the trunk of the tree directly.

Differential species: Kumquat tree species

Four other widely recognized cultivars are cultivated of kumquat. Meiwa Nagami and Meiwa Nagami are the two most well-known cultivars in the US. However, there are also numerous hybrid varieties of kumquat that are widely grown throughout the world.

Meiwa Kumquat Tree: Meiwa Kumquat Tree Meiwa kumquats are tiny round fruits with thin, smooth skin. The fruits can be consumed whole or fresh off the trees. It is a cross between Marumi Nagami and Marumi. Nagami. The fruits are sweet, and the flesh and skin are both sweet. An aroma of sweetness and is often called sweet Kumquat.

Marumi Kumquat Tree: Marumi Kumquat Tree Marumi is like Nagami, but it’s an oval fruit with an affluent and sweeter skin.

Nagami Kumquat tree: – Nagami Kumquat grows into a tiny oval-shaped citrus fruit that can be a part of the tree for a lengthy duration. This adds to the appeal of the wood and also its aesthetic appeal. The tree can grow 6.5-16.5 inches (2-5 meters), but it can be cut back to create a tree smaller at 6.5 feet (2 meters). Nagami Kumquat is a popular cultivar for many home gardeners, and the kumquat variety I cultivate at home.

Hong Kong Kumquat tree: domestic kumquat tree in China.

Hybrids include a range of species with different colors, Fukushu, Eustis Limequats, Indio Mandarinquats, and Calamondin also known as Calamansi.

Kumquats vs Oranges

Kumquat fruits initially appear to be small oranges. There are a few significant variations, though. Instead of being as sweet, kumquats are somewhat oval than round oranges. The peels of kumquats can also be eaten.

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When to expect kumquat fruits?

The variety of kumquats will determine when the time to harvest kumquats is the beginning of winter until the beginning of spring.

In summer, flowers bloom. Then the fruiting begins in the fall and matures in winter.

What is the time the kumquat tree needs to make fruits?

Generally, you can expect the kumquat tree to produce fruits in the next two years. Most trees purchased from nurseries are at least two years old, and your tree could bear fruit within the very first year.

How can you tell the ripeness of kumquats?

The kumquat’s kumquat matures when its color changes between green and orange. The fruit will appear slightly soft and light in hue.

If the fruit turns orange, they’re ready to be picked. You can conduct a taste test to determine whether it is sweet or hard, or you can leave it on the tree for a further week before tasting it again.

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Kumquat trees can store their fruits for a longer duration. This is among the many reasons gardeners love their kumquat trees. They look beautiful!

Consuming kumquats

Kumquats can be consumed fresh and in the whole form off the trees. However, like other citrus fruits, they are a bit bitter; the seeds must be avoided whenever possible. They’re not dangerous when swallowed, but they may taste bitter if you decide to chew on them. It is important to note that the seeds in my Nagami Kumquats are typically small enough not to worry about getting rid of them.

There are many different options to cook with and consume Kumquats in fresh form, for example, fresh. They can be picked and served with salads and desserts. Sweet pickled can be served along with Ice Cream candied and made into jam (our jam made from kumquats is delicious) or jam, chutney or marmalade with baking, as well as in drinking and baking.

Can a kumquat plant be grown from seed?

It is possible to plant a kumquat plant from seed. However, the fruit won’t be reliable.

Kumquat trees bought at garden centers and nurseries are grafted on rootstock bred to become resistant to disease. Making a kumquat plant available for sale at gardens and nurseries can take up to 3 years.

Your kumquat plant will bear fruit faster when you buy an established tree. Many gardeners are delighted to discover fruit during the first or second season.

Diseases and pests

We’ve provided a list of insect issues, diseases, and pests that could impact the kumquat; they’re typically sturdy and low-maintenance trees.

One of the most effective methods to watch out for potential issues is checking the tree weekly.

There are a few issues that could go wrong in your kumquat tree, and the best way to repair them.

Why are my kumquat’s leaves changing color?

The leaves of kumquats that are yellow can signal the presence of a variety of issues. For instance, a deficiency of soil nutrients which includes iron and nitrogen. This issue can be solved by feeding your kumquat tree with an acidic citrus fertilizer three to four times yearly. In addition to commercial fertilizers, the kumquat tree also flourishes when they are fed the compost of chicken manure and mulching.

Other reasons could be due to inadequate lighting or transplant shock, root rot from water pooling around roots, and poor drainage or even a lack of water.


Anthracnose, Armillaria root rot, Citrus blast. Phytophthora root rot is usually due to poor drainage of the soil. Excess water cannot get away from tree roots and triggers fungal infections, which cause root rot. Be sure that the kumquat tree is planted in soil that drains easily in the beginning, and make sure you do not over-water the plant.


Stink bugs, including bronze orange bugs. Insects can wreak havoc on the kumquat tree and leave you with rotten fruit and a lower kumquat harvest. However, there are a few efficient and natural ways to eliminate stink bugs from kumquat plants. Find out more in our article on Natural Remedies that are effective in Removing stink Bugs off Citrus Trees.

Mealybugs – treat them using neem oil for horticulture.

Aphids – look like tiny fluffy white cotton dots; the insects can be treated with garden soap.

Leaf miners – The moth that feeds on citrus leaves lays eggs on the leaves of citrus. When the larvae hatch, they will eat the new growth of the leaf, which causes damage; several methods to treat citrus leaf miners organically, such as horticultural neem oils or DIY sprays. For more information, look within our post Citrus leaf miners control: Organic and Natural Methods.

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I welcome easy-care trees to produce food. And the Kumquat tree is a great addition to any garden at home. Although small in size, they are big on the production of fruit. Once established, kumquat plants will be able to take good care of themselves and will provide you with rewards with a bounty of fruits.

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