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Citrus, Calamondin Orange

Citrus, Calamondin Orange

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About This Plant

Calamondin Orange (Citrus x microcarpa) is a dwarf hybrid citrus tree believed to originate from a cross between a mandarin orange and a kumquat, widely grown across Southeast Asia. Indoors it produces glossy, dark green oval leaves, small white flowers with an intensely sweet fragrance.

It flowers and fruits indoors and the blooms are intensely fragrant. Few indoor plants smell as strongly and sweetly as a Calamondin in bloom. The small white flowers produce a citrus fragrance that fills a room. When the flowers drop, small green fruits form that ripen to orange over several weeks. The tree can have flowers and fruit in different stages at the same time.

Keep it away from pets. The ASPCA confirms Citrus species are toxic to cats, dogs, and horses. The leaves, fruit peel, and essential oils contain compounds called psoralens and limonene that cause vomiting, diarrhea, depression, and photosensitivity in pets. Keep it in a room that pets cannot access, not just on a high shelf, as fallen fruits and leaves are also a risk.

It spends summer outdoors and comes in for Canadian winter. Calamondin thrives on warm Canadian summers outdoors on a patio or balcony in full sun from May through September. Bring it inside before temperatures drop below 10°C. Indoors through winter it needs your sunniest south-facing window. The transition between inside and outside triggers flowering and fruiting cycles.

Winter Slowdown

Growth slows significantly from November onward indoors. The tree may drop leaves if the transition from outdoor sun to indoor conditions is too abrupt. Bring it in gradually before the first frost, keep it in your sunniest south-facing window, and water less frequently.

Toxicity

Toxic to cats, dogs, and horses, confirmed by the ASPCA (Citrus spp.). The leaves, fruit peel, and essential oils contain psoralens and limonene. Symptoms include vomiting, diarrhea, depression, and photosensitivity. Keep the plant in a room that pets cannot access. Fallen fruits and leaves on the floor are also a risk.

Pests

Scale insects and spider mites are the main pests indoors. Scale appears as small brown bumps on stems and the undersides of leaves. Spider mites thrive in the dry heated air of Canadian homes from November onward.

Other Plants You Might Like

Not sure this is the right fit? Here are three other plants our Canadian customers love. All ship across Canada and thrive in Canadian homes.

Aloe Pheasant Breast. Sunny and low-water.

For a plant that also thrives on a south-facing windowsill in bright direct light without the complexity of a fruiting tree, the Aloe Pheasant Breast is a slow-growing, low-water sculptural plant that suits the same bright Canadian conditions.

Ponytail Palm. Outdoor summer, indoor winter.

For another plant that benefits from spending Canadian summers outdoors and overwintering inside, the Ponytail Palm has a strong architectural presence and handles the same bright indoor winter conditions.

Fairy Castle Cactus. Bright sun and no-fuss.

For a plant that thrives on a south-facing Canadian windowsill with direct sun and needs almost no attention, the Fairy Castle Cactus is one of the easiest high-light plants available.

Common Questions

How often should I water the Calamondin Orange?

Water when the top two inches of soil feel dry. In spring and summer outdoors this may be every three to five days in warm weather. Indoors in a Canadian winter, every seven to ten days. Never let the soil dry out completely as the leaves yellow and drop. Never leave it in standing water. Our indoor plant watering guide shows how to check moisture correctly.

When should I move it outdoors in Canada?

Move it outdoors after the last frost date in your area, typically late May in Ontario and Quebec. Start it in partial shade and move it to full sun over one to two weeks to prevent sunscorch. It can stay outside until September or until nighttime temperatures regularly drop below 10°C.

Is Calamondin Orange safe for cats and dogs?

No. The ASPCA confirms Citrus spp. is toxic to cats, dogs, and horses. The leaves, fruit peel, and essential oils contain psoralens and limonene, which cause vomiting, diarrhea, depression, and photosensitivity in pets. Keep it in a room that pets cannot access. Fallen fruit and leaves on the floor also pose a risk.

Why is it dropping leaves indoors?

Leaf drop is most commonly triggered by the transition from outdoor summer conditions to indoor winter conditions. The sudden drop in light intensity and humidity causes the tree to shed leaves it can no longer support. Acclimatise it gradually by bringing it into a shaded outdoor spot for a week before moving it inside. Once stable indoors in a south-facing window, leaf drop should stop.

Will it fruit every year?

Yes, with enough sun. Moving the tree outdoors in Canadian summers exposes it to full sun, insects for pollination, and the temperature change between seasons that triggers flowering. The transition back indoors in September also triggers a new flowering cycle. Trees kept entirely indoors may flower and fruit but less prolifically. Keep it in your sunniest south-facing window through winter and outdoors in full sun through summer.

Good to Know

Sun: Direct to bright

Needs as much direct sun as available. Outdoors in a Canadian summer, full sun is ideal. Indoors, a south-facing window giving several hours of direct light is necessary for flowering and fruiting. Without strong light indoors, growth slows significantly and fruit production stops.

Light: Bright direct

A south-facing window is the minimum requirement indoors. From October to February in Canada, keep it as close to the glass as possible. A grow light can supplement natural light if needed during the shortest winter days.

Water: When top 2 inches of soil are dry

Water when the top two inches of soil feel dry. More frequent in summer and outdoors. Less frequent indoors in a Canadian winter. The glossy leaves droop slightly as an early signal of underwatering. Never leave it standing in water.

Humidity: Moderate to high

Prefers moderate to high humidity. The dry forced-air heating in Ontario and Quebec homes from November onward causes leaf drop and attracts spider mites. A humidifier nearby or grouping with other plants helps through the Canadian heating season.

Pet Friendly: No

Toxic to cats, dogs, and horses, confirmed by the ASPCA. Contains psoralens and limonene in the leaves, fruit peel, and essential oils. Keep the plant in a room that pets cannot access. Fallen fruits and leaves are also a risk.

Pro Tip

The best thing you can do for a Calamondin Orange in Canada is put it outside on a patio or balcony from late May through September. The combination of full sun, outdoor humidity, and temperature fluctuation triggers reliable flowering and fruiting cycles that are difficult to replicate indoors year-round. Bring it back in before the first frost though.


What To Expect

Shipping and Delivery Details

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30-Day Happy Plant Guarantee

If your plant arrives damaged or isn't healthy, contact us within 30 days with a photo. We'll sort it out with a replacement, refund, or store credit whichever works best for you. View our complete guarantee policy

Frequently Asked Questions

Certainly! If you're pondering about ordering plants online, you're not alone. We've compiled the most frequently asked questions. Check out our FAQ section here for quick answers! Happy planting!

Plant and Pot Size Guide

4" Pot (Small): plant is approx. 6-10 inches tall. 6" Pot (Medium): approx. 12-18 inches tall. All plants come in a standard nursery pot. Decorative pots are sold separately.

Winter Shipping Protection

Between November and March we add extra insulated packaging and heat packs to protect your plant from cold temperatures during transit. You can add winter shipping protection at checkout.

Returns Policy

If a plant arrives with significant damage, pests, or disease, we offer a full replacement or refund.Our guarantee covers the viability and health of your plant for 30 days.

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Plant care essentials

Everything you need to keep this plant thriving.

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