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When to bring oleander inside

Enter a German postcode. We show when oleander 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 oleander take?

Bring in before the first frost. (Rhineland-Palatinate Garden Academy)

It copes with a light frost for a short time.

Other sources say

We use the most cautious figure from the expert sources.

Winter quarters

Bright, 4–8 °C (39–46 °F) (Bavarian Garden Academy)

Back outside

From mid-April. (Bavarian Garden Academy)

Questions and answers

When should oleander come inside?

Rhineland-Palatinate Garden Academy: 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 oleander take?

Rhineland-Palatinate Garden Academy: bring in before the first frost. It copes with a light frost for a short time. Other sources say: North Rhine-Westphalia Chamber of Agriculture: −5 °C (23 °F); Natur im Garten, Austria: −5 °C (23 °F); Rhineland-Palatinate Garden Academy: −6 °C (21 °F); Bavarian Garden Academy: −10 °C (14 °F).

How do you overwinter oleander?

Bright, 4–8 °C (39–46 °F) (Bavarian Garden Academy).

When can oleander go back outside?

From mid-April.

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 10 sources
  1. Gartenakademie Rheinland-Pfalz (DLR): Richtig überwintern – Die beliebtesten Kübelpflanzen
  2. Landwirtschaftskammer Nordrhein-Westfalen, Pressemeldung: Kübelpflanzen ins Winterquartier (20.10.2011)
  3. „Natur im Garten“ (im Auftrag des Landes Niederösterreich): Überwinterungsquartier Kübelpflanzen (Infoblatt)
  4. Gartenakademie Rheinland-Pfalz (DLR): Oleander als Kübelpflanze
  5. Bayerische Gartenakademie (LWG), Gartencast: Wann müssen Kübelpflanzen ins Winterquartier?
  6. RHS Find a plant: Nerium oleander (H3)
  7. Bayerische Gartenakademie (LWG): Oleander – Pflegetipps (Merkblatt 5151, aktualisiert September 2013)
  8. Deutscher Wetterdienst, Climate Data Center: Tageswerte (Klima) der Stationen, historisch
  9. Deutscher Wetterdienst: Vorgaben für die Gestaltung des DWD-Quellenvermerks
  10. GeoNames: Postal Code Dataset (DE.zip)

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