Winter is tough on our houseplants as they're constantly battling fluctuating temperatures and a lack of humidity due to our heating being on a lot. Maintaining a steady room temperature will help our best indoor plants to grow, but what's the perfect temperature for houseplants?
New research by Plumbnation (opens in new tab) shows that the optimal room temperature range for our plants is between 69.8-80.6˚F (21-27˚C).
The perfect temperature for houseplants
When it comes to how to care for houseplants in winter, light and temperature levels are important. A study by the University of Georgia says that during the daytime, the recommended temperature range is between around 69.8-80.6˚F (or 21-27˚C).
The perfect temperature for houseplants will of course vary depending on the kind of plants that you have at home. That said, if your home temperature drops to 50˚F (10˚C), your houseplants will struggle, particularly those with flowers.
Succulents are surprisingly tolerant to cold temperatures, as are ferns. If grown in conditions that are too cold, most plants, from your Swiss cheese plant to your rubber plant, will simply grow more slowly.
However, many houseplants originate from tropical and subtropical parts of the world, and these need warmer temperatures and higher humidity. We've seen beachy palms like the Kentia Palm (pictured below), Birds of Paradise and Parlour Palms becoming increasingly popular for indoor garden ideas this year as we seek to bring a fun, holiday feel to our living rooms.
These equatorial plants can cope in warm temperatures, so although they'll manage with the occasional chill, they'll be more at ease within the 69.8-80.6˚F (21-27˚C) range.
Anna, founder of houseplant retailer and subscription box service Plant Pet Club (opens in new tab) says plants 'do get used to our comfortable home temperatures,' meaning that 'quite a few plants will get upset if a sudden heat wave or cold spell occurs.' She says the main thing to be wary of is overwatering in colder months, which could kill reliable survivors like snake plants and pothos.
'Last summer I put my aloe vera outside to enjoy some sunshine, and it was damaged by midday sun! Why does it thrive in scorching Tenerife, but gets sunburn in my back garden at 23˚C? Simply because it is used to its cosy house spot!'
Every plant variety is different, so the best thing you can do is look out for signs of cold damage, including wilting or blackened leaves.
Millie joined Gardeningetc in early 2021. She loves creating a vibrant display of containers in her small urban garden and is always picking up new plants at the local garden center. She's never without some fresh flowers at home and her favorite houseplant is her variegated pothos that's currently climbing its way over her bookshelves.
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