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Dense-leaved orange tree covered in ripe oranges against a pale sky

Bitter orange tree

Citrus aurantium

The orange tree of Marrakech's squares and riads: dark foliage, heady orange blossom and deep orange fruit.

Light
Full sun
Water
Moderate watering
Care
Easy
Heat
Extreme heat
Pets
Mildly toxic

At a glance

Botanical name
Citrus aurantium
Also known as
Bigaradier · Oranger amer · Bitter orange · Seville orange · Larenj · نارنج
Mature height
400 to 700 cm
Growth
Moderate growth
Environments
Outdoor · Garden · Terrace
Pets
Mildly toxic to pets

Care

What this plant needs

For each area, the instruction specific to this plant, then the general principle that explains why.

Water

For this plant

A generous weekly watering in summer, fortnightly in spring and autumn, almost nothing in winter once established.

The principle

A moderate need asks for regularity rather than volume. Water when the top three to four centimetres feel dry: in practice weekly from May to September, every ten to fifteen days the rest of the year. Adjust for the pot — terracotta dries twice as fast as fibreglass.

Light

For this plant

Full sun. It tolerates the light shade of a wall late in the day.

The principle

Full sun means six hours or more of direct light a day. These plants build thick foliage and dense tissue to cope with it; in insufficient light they stretch, lengthen their internodes and lose their compact habit. After buying or repotting, reintroduce direct sun gradually over ten to fifteen days to avoid scorch.

Feeding

For this plant

Compost at the base in late winter, then citrus feed in April and July.

The principle

Moderate growth is fed once a month from March to September with a balanced liquid feed at the maker's dose. Water with plain water first, then feed: on dry substrate, concentrated fertiliser burns the fine roots. Nothing from October to February, the resting period.

Temperature

For this plant

Withstands brief frost down to −5 °C, which makes it reliable in Fes and Meknes. Heat is never a concern.

The principle

This plant takes Moroccan heat peaks, chergui included, without lasting damage. Above 40 °C it simply pauses its growth: that is a protection, not a sign of distress. Cold exposes it more — watch winter nights at altitude and inland.

Yearly rhythm

Indicative calendar

Calendar derived from the plant's profile — water need, heat tolerance, environment and growth rate — applied to the Moroccan climate; adjust it to your city, your exposure and your substrate.

Indicative twelve-month care calendar
JanFebMarAprMayJunJulAugSepOctNovDec
WateringWatering in January: ReducedWatering in February: ReducedWatering in March: RegularWatering in April: RegularWatering in May: RegularWatering in June: SustainedWatering in July: SustainedWatering in August: SustainedWatering in September: SustainedWatering in October: RegularWatering in November: ReducedWatering in December: Reduced
FeedingFeeding in January: Nothing to doFeeding in February: Nothing to doFeeding in March: ReducedFeeding in April: RegularFeeding in May: RegularFeeding in June: RegularFeeding in July: RegularFeeding in August: RegularFeeding in September: ReducedFeeding in October: Nothing to doFeeding in November: Nothing to doFeeding in December: Nothing to do
PruningPruning in January: Nothing to doPruning in February: RegularPruning in March: RegularPruning in April: Nothing to doPruning in May: Nothing to doPruning in June: Nothing to doPruning in July: Nothing to doPruning in August: Nothing to doPruning in September: Nothing to doPruning in October: Nothing to doPruning in November: Nothing to doPruning in December: Nothing to do
IntensityNothing to doReducedRegularSustained

Morocco

Where this plant thrives in Morocco

Our observations city by city, crossed with the local climate. A city that is missing is not a refusal: it simply has not been documented for this plant yet.

Thrives

  • Marrakechinland · dry air · 45 °C in summer, 4 °C in winter
  • Fezinland · dry air · 42 °C in summer, 2 °C in winter
  • Meknesinland · dry air · 41 °C in summer, 2 °C in winter
  • Beni Mellalinland · dry air · 43 °C in summer, 3 °C in winter

Well suited

  • Casablancacoastal · moderate humidity · 33 °C in summer, 7 °C in winter
  • Rabatcoastal · moderate humidity · 33 °C in summer, 6 °C in winter
  • Agadircoastal · moderate humidity · 34 °C in summer, 8 °C in winter
  • Oujdainland · dry air · 41 °C in summer, 1 °C in winter
  • Kenitracoastal · moderate humidity · 36 °C in summer, 5 °C in winter
  • Tangiercoastal · humid air · 31 °C in summer, 8 °C in winter

Possible with care

  • Saficoastal · moderate humidity · 33 °C in summer, 7 °C in winter
  • Essaouiracoastal · humid air · 27 °C in summer, 9 °C in winter

We deliver to all of these cities.

Diagnosis

Three signals worth reading

The three most common disorders on a plant with this profile, and the move that corrects them.

  1. 1

    What you see

    Dry brown leaf tips and edges, foliage that droops late in the day and recovers overnight.

    Likely cause

    Alternating neglect and compensation: the root ball dries out completely, then receives too much at once.

    The right move

    Fix one watering day a week and check with a finger before you pour. Trim brown parts with scissors, following the leaf's shape; they will not turn green again.

  2. 2

    What you see

    Stems stretching towards the window, long internodes, new leaves smaller and paler.

    Likely cause

    Not enough light. A full-sun plant three metres from a window receives less than a tenth of what it asks for.

    The right move

    Move it to the brightest glazing or out onto a balcony, reacclimatising it to direct sun over two weeks. Cut back the stretched shoots: it will regrow compact.

  3. 3

    What you see

    Grey dust on the foliage, growth slowing with no obvious cause.

    Likely cause

    A dusty blade captures markedly less light, and city dust in Morocco builds up fast.

    The right move

    Wipe the leaves with a damp sponge every month, upper and lower surfaces. Avoid leaf-shine products, which block the stomata.

Adobe ramparts of El Badi Palace in Marrakech with a date palm and orange trees in the foreground

Take the step

Ready to join your space?

Every available size, the premium setup and delivery across Morocco are on the product page.

Bitter orange treeFrom790 DHAvailable

Journal

Further reading on this plant

The journal articles that mention it.

City by city

Which plants for Marrakech?

45 °C in summer, possible winter frost, very dry air: the palette that thrives in the red city, indoors and in the garden.

7 min read