Citrus japonica 'Nagami' – Nagami Kumquat

$1,150.00

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Size: 100L

100L 200L

Current Stock Height Guides

Height guide disclaimer: Height ranges are approximate only. As living products, plant heights naturally vary between individual plants, batches, and seasons. No guarantee is given that supplied plants will fall within the stated range. If minimum heights are required, you mustconfirm current batch heights with Evergreen Trees Direct prior to purchase. Variation in height is normal and is not grounds for return, refund, replacement, or compensation.

Mature Height & Width

Mature Height: 2m to 3m

Mature Width: 1.5m to 2m

Citrus japonica 'Nagami' – Nagami Kumquat is expected to grow 15cm to 30cm per year (approx.).

Root Ball Dimensions

Use this as a reference when digging your planting hole. We recommend digging at least 10% wider than the dimensions below to encourage strong root development.

30cm Pot: 33cm (W) × 30cm (D)
40cm/45L Pot: 44cm (W) × 41.5cm (D)
50cm Pot / 70L Pot: 55cm (W) × 41.8cm (D)
100L Bag: 50.6cm (W) × 52.8cm (D)
150L Bag: 66cm (W) × 55cm (D)
200L Bag: 71.5cm (W) × 60.5cm (D)
300L Bag: 88cm (W) × 63.8cm (D)
400L Bag: 99cm (W) × 66cm (D)
500L Bag: 122cm (W) × 66cm (D)
750L Bag: 134cm (W) × 69cm (D)
1000L Bag: 146.3cm (W) × 71.5cm (D)
2000L Bag: 176cm (W) × 82.5cm (D)

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About Your New Citrus japonica 'Nagami' – Nagami Kumquat

Citrus japonica 'Nagami', long sold as Fortunella margarita, is the oval kumquat. It is a small evergreen with glossy dark green leaves and a dense, neatly rounded frame. The fruit is the point of difference: little oval kumquats with a sweet edible rind and tart flesh, eaten whole, skin and all.

It is the most cold hardy plant in the citrus group and takes light frost once established, which widens its range into Canberra, Orange and the Adelaide Hills as well as the milder coast. Full sun and free draining soil suit it best. Growth is slow to moderate, and the plant is self-fertile.

At 2 to 3 metres tall and 1.5 to 2 metres wide it stays in scale with a courtyard, a balcony or a pair of pots either side of a door. It also clips into a low edible hedge. Fruit colours from late autumn into winter and holds on the tree for weeks.

Frequently Asked Questions

About Citrus japonica 'Nagami'

What is Citrus japonica 'Nagami'?

Citrus japonica 'Nagami' is the oval or Nagami kumquat, still widely listed under its former name Fortunella margarita. It is a compact evergreen shrub or small tree in the citrus family, grown for its small oval orange fruit, glossy foliage and fragrant white spring flowers. It is self-fertile and needs no pollinating partner.

How big does the Nagami kumquat grow?

In the ground it reaches 2 to 3 metres tall and 1.5 to 2 metres wide, with a naturally dense rounded shape that needs little training. In a large pot it usually settles closer to 1.5 metres. Light pruning after harvest keeps the frame tidy and holds it at whatever height you want.

Can you eat the skin of a kumquat?

Yes, and that is the point of the fruit. The rind is sweet and the flesh underneath is tart, so a whole Nagami eaten in one bite gives you both at once. They are also used for marmalade, candying, cordials and preserving in spirits. Pick them fully coloured for the best balance.

Is the Nagami kumquat frost hardy?

It is the most cold hardy member of the citrus group and handles light to moderate frost once established, which is why it succeeds in places like Canberra, Orange and the Adelaide Hills where other citrus struggle. Young plants still benefit from shelter in their first winter, or a position against a warm wall.

Can a Nagami kumquat be grown in pots?

It is one of the best citrus for containers. Use a pot at least 500 millimetres across with a quality potting mix, keep it in full sun, and water whenever the top few centimetres dry out. Feed with a citrus fertiliser through the growing season and refresh the mix every few years.

Does the Nagami kumquat need a pollinator?

No. It is self-fertile, so a single plant will crop on its own. Flowers appear in spring and often again through summer, and bees improve fruit set where they are active. Consistent watering and feeding during flowering matters far more to your yield than having a second plant nearby.

How do I care for a Nagami kumquat?

Water deeply and regularly through spring and summer, and mulch the root zone while keeping the mulch off the trunk. Apply a citrus fertiliser in early spring and again in late summer. Prune lightly after harvest to keep the shape dense. Check for scale, aphids and citrus leaf miner on new growth.

Uses in my Garden

Edible Garden
Plant in Pots (or) Suitable for Pots
Feature Tree
Screening or Privacy

Citrus japonica 'Nagami' – Nagami Kumquat works in an:

Edible Garden – integrates fruit, herbs, and productive plants.
Formal Garden – structured, symmetrical design with clipped shapes.
Mediterranean Style Garden – timeless courtyard look with stone, pots, and bold greenery.
Low-maintenance Garden – resilient choices for easy care and year-round appeal.

Is Citrus japonica 'Nagami' – Nagami Kumquat Evergreen or Deciduous?

Citrus japonica 'Nagami' – Nagami Kumquat is an Evergreen (foliage year round) Tree

Mature Height & Width

Mature Height: 2m to 3m

Mature Width: 1.5m to 2m

Citrus japonica 'Nagami' – Nagami Kumquat is expected to grow 15cm to 30cm per year (approx.).

Growth Rate of Citrus japonica 'Nagami' – Nagami Kumquat

Citrus japonica 'Nagami' – Nagami Kumquat is expected to grow 15cm to 30cm per year (approx.).

They are considered to have a:

Slow Growth Rate

Frost Tolerance & Ideal Climate to plant Citrus japonica 'Nagami' – Nagami Kumquat

Is Citrus japonica 'Nagami' – Nagami Kumquat frost tolerant?

Citrus japonica 'Nagami' – Nagami Kumquat is Frost Tolerant – Can handle light to moderate frost once established.

Does Citrus japonica 'Nagami' – Nagami Kumquat Flower?

Small, fragrant white star shaped flowers open in spring and often repeat through summer. They are followed by little oval fruit that colours from late autumn into winter and holds on the plant for weeks, giving a long ornamental and edible season.

Does Citrus japonica 'Nagami' – Nagami Kumquat flower?

Yes - Flowers

Flowering Period:

Spring
Summer

Flower Type:

Fragrant
Star

Flower Colour:

White

Is Citrus japonica 'Nagami' – Nagami Kumquat an Australian Native Tree?

No

Citrus japonica 'Nagami' – Nagami Kumquat is Native to Native to southern China and long cultivated in China and Japan. The Nagami or oval kumquat was described botanically as Fortunella margarita, a name still used widely in the nursery trade, and is now placed in Citrus as Citrus japonica.

What is the Wildlife Value of Citrus japonica 'Nagami' – Nagami Kumquat ?

Fragrant white flowers appear over a long season and are worked steadily by bees and other pollinating insects. The dense evergreen canopy gives small birds cover, and ripe fruit left on the plant is taken by birds through late autumn and winter.

How much Sunlight does Citrus japonica 'Nagami' – Nagami Kumquat need?

Citrus japonica 'Nagami' – Nagami Kumquat will thrive best in:

Full Sun

Preferred Soil?

Citrus japonica 'Nagami' wants free draining sandy loam or loam running slightly acidic to neutral, and it will not accept wet feet. On clay, improve the ground with compost and coarse material or plant on a raised mound. In pots use a premium citrus or potting mix rather than garden soil, and keep watering even through flowering and fruit fill.

Is Citrus japonica 'Nagami' – Nagami Kumquat Drought Tolerant?

Is Citrus japonica 'Nagami' – Nagami Kumquat Drought tolerant?

Established plants tolerate short dry spells better than most citrus, but this is not a drought hardy plant. Fruit set and rind quality drop away if the root zone dries out, and pots dry far quicker than open ground, so keep watering consistent through the warmer months.

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How To Plant Your Citrus japonica 'Nagami' – Nagami Kumquat

Site: Pick a full sun position with free draining soil, sheltered from cold drying wind.

Soil preparation: Work compost and aged manure through the planting area, and confirm water drains away freely.

Hole: Dig twice as wide as the root ball and the same depth, keeping the graft union clear of the soil.

Planting: Set the root ball slightly proud of the surrounding soil, backfill, firm in and water deeply to settle.

Recommended Planting Spacing For Your Citrus japonica 'Nagami' – Nagami Kumquat

Low edible hedge: 1 metre apart for a dense clipped line, or 1.5 metres for a softer informal run.

Feature planting: 2 to 2.5 metres apart so each plant keeps its rounded shape.

Pots: one plant per container of at least 500 millimetres across.

Citrus japonica 'Nagami' – Nagami Kumquat is expected to grow 15cm to 30cm per year (approx.).

Slow Growth Rate

Long Term Care For Your Citrus japonica 'Nagami' – Nagami Kumquat

Watering: Water deeply and regularly through spring and summer. Pots dry quickly, so check them every few days in hot weather.

Mulching: Apply a 75 millimetre layer of organic mulch over the root zone, pulled back clear of the trunk.

Pruning: Prune lightly after harvest to keep the frame dense. For a clipped hedge, trim two to three times through the growing season.

Fertilising: Apply a complete citrus fertiliser in early spring and again in late summer, and feed potted plants more often.

Pest and disease: Watch for scale, aphids and citrus leaf miner on soft new growth, and treat early with horticultural oil.

Planting Your Citrus japonica 'Nagami' – Nagami Kumquat in Different Soil

Citrus japonica 'Nagami', formerly Fortunella margarita, grows best in free draining sandy loam or loam with a slightly acidic to neutral pH. Sharp drainage matters more than soil richness.

Sandy soil: Excellent drainage. Add compost and mulch generously to hold moisture through summer.

Clay soil: Improve with gypsum and organic matter, and plant on a raised mound to lift the roots clear of wet ground.

Loam: The preferred soil, giving steady growth and good rind quality.

pH: Aim for 6.0 to 7.0. Strongly alkaline soil brings on yellowing between the leaf veins.