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When to bring geraniums inside

Enter a German postcode. We show when geraniums 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

12 October

In 9 out of 10 years the first frost came later. On average it freezes from 27 October.

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 geraniums take?

Bring in before the first frost. (RHS)

Natur im Garten also gives 0 °C (32 °F).

Other sources say

We use the most cautious figure from the expert sources.

Winter quarters

Bright, 8–10 °C (46–50 °F) (Natur im Garten, Austria)

According to the source, balcony geraniums also overwinter without leaves in the dark.

Back outside

After the last frost. On average for Germany it is over by 19 April, in 9 out of 10 years by 6 May. (RHS)

Questions and answers

When should geraniums come inside?

RHS: bring in before the first frost. On average for Germany it gets that cold from 27 October, and not before 12 October in 9 out of 10 years.

How much cold can geraniums take?

RHS: bring in before the first frost. Natur im Garten also gives 0 °C (32 °F). Other sources say: North Rhine-Westphalia Chamber of Agriculture: protect below 10 °C (50 °F), not explicitly bring in.

How do you overwinter geraniums?

Bright, 8–10 °C (46–50 °F) (Natur im Garten, Austria).

When can geraniums go back outside?

After the last frost. On average for Germany it is over by 19 April, in 9 out of 10 years by 6 May.

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 6 sources
  1. RHS: Pelargonium growing guide
  2. Landwirtschaftskammer Nordrhein-Westfalen, Gartentipp: Wie werden Kübelpflanzen am besten überwintert? (20.12.2003)
  3. „Natur im Garten“ (im Auftrag des Landes Niederösterreich): Überwinterungsquartier Kübelpflanzen (Infoblatt)
  4. Deutscher Wetterdienst, Climate Data Center: Tageswerte (Klima) der Stationen, historisch
  5. Deutscher Wetterdienst: Vorgaben für die Gestaltung des DWD-Quellenvermerks
  6. GeoNames: Postal Code Dataset (DE.zip)

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