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When to bring hibiscus inside

Enter a German postcode. We show when hibiscus 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

1 July

In 9 out of 10 years it did not get colder than 12 °C (54 °F) before this. On average from 2 July. Nights below 12 °C (54 °F) already happen in summer.

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 hibiscus take?

Bring in before it gets colder than 12 °C (54 °F). (RHS)

Other sources say

We use the most cautious figure from the expert sources.

Winter quarters

Bright, 10–15 °C (50–59 °F) (Rhineland-Palatinate Garden Academy)

Back outside

We don’t have a sourced value for this yet.

Questions and answers

When should hibiscus come inside?

RHS: bring in before it gets colder than 12 °C (54 °F). Nights below 12 °C (54 °F) happen almost everywhere in Germany as early as July.

How much cold can hibiscus take?

RHS: bring in before it gets colder than 12 °C (54 °F). Other sources say: Rhineland-Palatinate Garden Academy: 5 °C (41 °F); Bavarian Garden Academy: before the first frost.

How do you overwinter hibiscus?

Bright, 10–15 °C (50–59 °F) (Rhineland-Palatinate Garden Academy).

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 7 sources
  1. RHS: Hibiscus rosa-sinensis growing guide
  2. Gartenakademie Rheinland-Pfalz (DLR): Richtig überwintern – Die beliebtesten Kübelpflanzen
  3. Bayerische Gartenakademie (LWG), Gartencast: Wann müssen Kübelpflanzen ins Winterquartier?
  4. RHS Find a plant: Hibiscus × rosa-sinensis (H1b)
  5. Deutscher Wetterdienst, Climate Data Center: Tageswerte (Klima) der Stationen, historisch
  6. Deutscher Wetterdienst: Vorgaben für die Gestaltung des DWD-Quellenvermerks
  7. GeoNames: Postal Code Dataset (DE.zip)

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