Citrus japonica 'Nagami' (F)

RHS Plant Profile
kumquat 'Nagami'

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Synonyms

Fortunella margarita 'Nagami'
× Citrofortunella 'Nagami'

Conservatory Greenhouse Fruit Edible Shrubs
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An evergreen shrub with a dense canopy of glossy green leaves. It has fragrant white flowers, at almost any time of year which may develop into small egg-shaped orange-yellow fruit. These can be eaten whole and are the kumquats most usually found in supermarkets

Position

Full sun

Soil Types

Loam

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
5–10 years
Max Spread
0.5-1 metres
Max Height
0.5-1 metres

Growing Conditions

Loam
Moisture
Moist but well–drained
pH
Neutral

Position

Full sun
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H1C

Colour & Scent

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Rutaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy, Spreading branched
Potentially harmful
Fruit harmful to skin with sunlight/skin allergen (lemon and lime-bearing Citrus only). Wear gloves and other protective equipment when handling
Genus
Citrus are typically evergreen shrubs or trees, frequently spiny, with simple, leathery, aromatic leaves, usually with winged stalks, and often fragrant white or pink-tinged flowers, followed by large, juicy fruits
Name Status
Unresolved
Horticultural Group

Horticultural Classification Codes

Horticultural Classification Codes are often given to genera which have a large number of species or cultivars. They are used to categorise cultivated plants based on specific, shared characteristics such as shape, colour, size or flowering time, and can be displayed as letters or numbers

For example:
Dahlia ‘Sunset Kate (Sin) = Single flower
Rosa ‘Marigold’ (HT) = Hybrid Tea

This genus produces fruit, but not necessarily edible fruit

How to Grow

Cultivation

Grow as a conservatory or greenhouse plant, in a container of peat-free, loam-based potting compost with added grit, in full light, with shade from hot sun. In growth during spring and summer, water freely, and mist daily. Apply fertilisers formulated for citrus, throughout the year, following the manufacturer’s instructions; water sparingly in winter. See citrus cultivation for further information

Propagation

Propagate by grafting

Suggested planting locations and garden types

  • Patio and container plants
  • Conservatory and greenhouse
  • Edible fruit

Pruning

Prunng group 1

Pests

May be susceptible to citrus red spider mite and glasshouse red spider mite, soft scale and fluted scale, aphids, caterpillars and mealybugs under glass

Diseases

Generally disease-free