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When to bring lemon trees inside

Enter a German postcode. We show when lemon trees should come inside: from the cold limit in expert sources and the night-time lows where you are.

Where are your pots?

Average for Germany

Bring in by

6 September

In 9 out of 10 years it did not get colder than 5 °C (41 °F) before this. On average from 22 September.

Based on past records, not a forecast · Data: Deutscher Wetterdienst (CC BY 4.0)

Data: Deutscher Wetterdienst, daily minimum temperatures 1991–2020, own calculation. Licence CC BY 4.0. Postcode coordinates: GeoNames (CC BY 4.0).

How much cold can lemon trees take?

Bring in before it gets colder than 5 °C (41 °F). (RHS)

The RHS figure is for lemons. Natur im Garten also gives 5 °C (41 °F) for citrus.

Other sources say

We use the most cautious figure from the expert sources.

Winter quarters

Bright, 5–10 °C (41–50 °F) (Saxon Garden Academy)

Back outside

Once it stays warm. (RHS)

The RHS says that in the UK this is often not until mid-June.

Questions and answers

When should lemon trees come inside?

RHS: bring in before it gets colder than 5 °C (41 °F). On average for Germany it gets that cold from 22 September, and not before 6 September in 9 out of 10 years.

How much cold can lemon trees take?

RHS: bring in before it gets colder than 5 °C (41 °F). The RHS figure is for lemons. Natur im Garten also gives 5 °C (41 °F) for citrus. Other sources say: Bavarian Garden Academy: −5 °C (23 °F); Rhineland-Palatinate Garden Academy: −5 °C (23 °F); North Rhine-Westphalia Chamber of Agriculture: protect below 10 °C (50 °F), not explicitly bring in.

How do you overwinter lemon trees?

Bright, 5–10 °C (41–50 °F) (Saxon Garden Academy).

When can lemon trees go back outside?

Once it stays warm. The RHS says that in the UK this is often not until mid-June.

More container plants

All container plants

Related

Last frost date by postcodeAverage and safe date for German postcodesHardiness zone by postcodeHow cold it gets where you are, and what copesWinter vegetables and frost hardy plantsWhat stays in the bed over winter and copes with frost

Sources

Show 8 sources
  1. RHS: How to grow citrus
  2. Bayerische Gartenakademie (LWG), Gartencast: Wann müssen Kübelpflanzen ins Winterquartier?
  3. Gartenakademie Rheinland-Pfalz (DLR): Kübelpflanzen überwintern
  4. Landwirtschaftskammer Nordrhein-Westfalen, Gartentipp: Wie werden Kübelpflanzen am besten überwintert? (20.12.2003)
  5. Sächsische Gartenakademie (LfULG), Ute Kroll: Überwinterung von Kübelpflanzen (Stand Februar 2009)
  6. Deutscher Wetterdienst, Climate Data Center: Tageswerte (Klima) der Stationen, historisch
  7. Deutscher Wetterdienst: Vorgaben für die Gestaltung des DWD-Quellenvermerks
  8. GeoNames: Postal Code Dataset (DE.zip)

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