Morton Citrange: where to plant it in the ground?

Hardiness −15 °C. Municipality by municipality, depending on how cautious you are about frost. See the page “Morton Citrange – Hardy citrange”

How cautious are you about frost?
Layers

Morton Citrange: where to plant it in the ground?
  • Without protection one winter in ten (Reasonable profile)
  • With a winter fleece put on during frosty nights (one winter in ten)
  • In a pot, sheltered in winter
  • Black line: limit of the Bold profile. On one side it came through the last 5 winters without protection; on the other (towards the colder regions), even those winters were too cold for it.
Hover over or tap a municipality, or search for it by name.

© Greffeur d’agrumes 2026 – greffeurdagrumes.com

In short

For a “Reasonable” gardener (the cold of one winter in ten), this variety (hardiness −15 °C) survives without protection in 78.2% of the municipalities of mainland France, with a winter fleece in 17.6%, and should be grown in a pot in 4.1%.

It survives without protection in most municipalities of: Brittany, Pays de la Loire, Normandy, Île-de-France, Centre-Val de Loire, Nouvelle-Aquitaine, Hauts-de-France, Occitanie, Provence-Alpes-Côte d’Azur, Auvergne-Rhône-Alpes. And in part of the municipalities of: Burgundy-Franche-Comté, Grand Est.

A “Cautious” gardener (the worst winter of the last 30 years) will see it survive without protection in 55.6% of municipalities; a “Bold” one (the coldest of the last 5 winters) in 98.5%, at the risk of a harsh winter damaging it.

Details: 30 large cities and frequently asked questions
Cold used and verdict in 30 large cities (centre of the municipality)
CityCautiousReasonableBold
Paris−12 °C – without protection−9 °C – without protection−5 °C – without protection
Marseille−10 °C – without protection−8 °C – without protection−5 °C – without protection
Lyon−14 °C – without protection−11 °C – without protection−8 °C – without protection
Toulouse−12 °C – without protection−9 °C – without protection−9 °C – without protection
Nice−5 °C – without protection−4 °C – without protection−1 °C – without protection
Nantes−11 °C – without protection−9 °C – without protection−7 °C – without protection
Montpellier−10 °C – without protection−8 °C – without protection−6 °C – without protection
Strasbourg−14 °C – without protection−13 °C – without protection−9 °C – without protection
Bordeaux−9 °C – without protection−8 °C – without protection−6 °C – without protection
Lille−13 °C – without protection−12 °C – without protection−8 °C – without protection
Rennes−10 °C – without protection−9 °C – without protection−6 °C – without protection
Reims−16 °C – with a fleece−13 °C – without protection−11 °C – without protection
Toulon−3 °C – without protection−3 °C – without protection−3 °C – without protection
Saint-Étienne−17 °C – with a fleece−15 °C – without protection−10 °C – without protection
Le Havre−11 °C – without protection−7 °C – without protection−6 °C – without protection
Grenoble−19 °C – in a pot−17 °C – with a fleece−12 °C – without protection
Dijon−19 °C – in a pot−15 °C – without protection−8 °C – without protection
Angers−12 °C – without protection−11 °C – without protection−6 °C – without protection
Nîmes−8 °C – without protection−7 °C – without protection−4 °C – without protection
Clermont-Ferrand−18 °C – with a fleece−15 °C – without protection−12 °C – without protection
Aix-en-Provence−11 °C – without protection−9 °C – without protection−6 °C – without protection
Brest−7 °C – without protection−6 °C – without protection−4 °C – without protection
Tours−14 °C – without protection−12 °C – without protection−7 °C – without protection
Limoges−15 °C – without protection−11 °C – without protection−9 °C – without protection
Perpignan−6 °C – without protection−6 °C – without protection−4 °C – without protection
Metz−16 °C – with a fleece−15 °C – without protection−11 °C – without protection
Besançon−18 °C – with a fleece−16 °C – with a fleece−11 °C – without protection
Orléans−14 °C – without protection−14 °C – without protection−10 °C – without protection
Pau−11 °C – without protection−9 °C – without protection−8 °C – without protection
La Rochelle−9 °C – without protection−7 °C – without protection−7 °C – without protection

Frequently asked questions

Can Morton Citrange survive winter in the ground in Paris?

In Paris, the cold used is −12 °C for a cautious gardener, −9 °C one winter in ten and −5 °C for a bold one. With a hardiness of −15 °C, Morton Citrange is: without protection (Cautious), without protection (Reasonable), without protection (Bold).

Can Morton Citrange survive winter in the ground in Lyon?

In Lyon, the cold used is −14 °C for a cautious gardener, −11 °C one winter in ten and −8 °C for a bold one. With a hardiness of −15 °C, Morton Citrange is: without protection (Cautious), without protection (Reasonable), without protection (Bold).

Where can Morton Citrange be planted in the ground without protection?

It survives without protection in most municipalities of: Brittany, Pays de la Loire, Normandy, Île-de-France, Centre-Val de Loire, Nouvelle-Aquitaine, Hauts-de-France, Occitanie, Provence-Alpes-Côte d’Azur, Auvergne-Rhône-Alpes. And in part of the municipalities of: Burgundy-Franche-Comté, Grand Est. Look up your municipality on the map above.

Does Morton Citrange need a winter fleece?

For the Reasonable profile, a fleece is enough in 17.6% of municipalities (ochre hatching on the map). Put it on for each frost and take it off as soon as the frost is over. Where the map stays grey, grow it in a pot, sheltered in winter.

About this variety

Morton belongs to the citranges, crosses between sweet orange and trifoliate orange.

Cold: Météo-France records (Licence Ouverte), winters 1996-1997 to 2025-2026, estimated for each municipality from nearby stations and altitude; near the eastern border, also Deutscher Wetterdienst (Datenlizenz Deutschland 2.0). Municipalities and boundaries: INSEE, IGN (Licence Ouverte).

Hardiness: as shown on the variety page, for an adult, acclimatised plant during a short frost. Your garden may be milder or colder than the centre of the municipality. Put the fleece on for each frost and take it off as soon as the frost is over.

Back to top