Ideal Temperature Range for Kumquat

(Citrus japonica)

Kumquat, also known as Cumquats, Marumi kumquat

The kumquat needs warm and sunny weather to grow well. Its native growth environment related to temperature requirements is in tropical to subtropical regions, with average temperatures ranging from 20 to 38 ℃ (68 to 100.4 ℉). During the winter season, temperatures should not fall below 5 ℃ (41 ℉) to prevent cold damage. It is recommended to keep the plant in a warm and sheltered location in the colder months.

What Is the Ideal Temperature Range for Kumquat?

Ideal

Tolerable

Unsuitable

Just like people, each plant has its own preferences. Learn about your plants' temperature needs and create a comforting environment for them to flourish.

Temperature Essentials for Kumquat

Regional wintering strategies

Kumquat is extremely heat-loving, and any cold temperatures can cause harm to it. In the autumn, it is recommended to bring outdoor-grown Kumquat indoors and place it near a bright window, but it should be kept at a certain distance from heaters. Maintaining temperatures above 20°C during winter is beneficial for plant growth. Any temperatures approaching 0°C are detrimental to the plant.

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Signs of Low and High Temperature in Kumquat

Symptoms of Low Temperature in Kumquat

Kumquat prefers warm temperatures and is not tolerant of low temperatures. It thrives best when the temperature is above 20°C. During winter, it should be kept above 0°C. When the temperature falls below -5°C, the leaves may lighten in color. After frost damage, the color gradually turns brown or black, and symptoms such as wilting and drooping may occur.

Solutions for Low Temperature in Kumquat

Trim off the frost-damaged parts. Immediately move indoors to a warm environment for cold protection. Choose a spot near a south-facing window to place the plant, ensuring ample sunlight. Additionally, avoid placing the plant near heaters or air conditioning vents to prevent excessive dryness in the air.

Symptoms of High Temperature in Kumquat

During summer, Kumquat should be kept below 38°C. When the temperature exceeds 43°C, the color of the leaves becomes lighter, and the plant becomes more susceptible to sunburn.

Solutions for High Temperature in Kumquat

Trim away the sunburned and dried-up parts. Move the plant to a location that provides shade from the midday and afternoon sun. Water the plant in the morning and evening to keep the soil moist.