Plant SOS · Season & weather
When to put your
houseplants outside?
A stay outdoors during the warm season often does houseplants a world of good: abundant natural light, fresh air, occasional rain that rinses the foliage. Many plants take advantage of this to grow back stronger. But the right time and method are just as important as the desire to give them some fresh air: taking them out too early, too abruptly, or in the wrong place can do more harm than good.
This guide explains when to safely take your plants out, how to gradually acclimate them, and the precautions to take for an outdoor stay without unpleasant surprises.
When is the right time to take your plants out?
Wait until nights are consistently mild
The most reliable rule isn't a date on the calendar, but the nighttime temperature: wait until nights consistently stay above 12 to 13°C, with no risk of late frost, before taking out your tropical plants. In France, this usually corresponds to mid-May, once the period of the last spring frosts has passed.
How to acclimate your plants without shock
Start in the shade, then gradually increase
A plant accustomed to the filtered light indoors can literally burn if suddenly exposed to full sun. First, place it in a shaded corner outside for a few days, then gradually increase its light exposure over one to two weeks, monitoring the leaves at each step.
"A plant doesn't get used to the sun overnight.
It needs a transition, just like us after winter."
Where to place your plants outdoors
Avoid full afternoon sun and strong winds
Even once acclimated, most houseplants prefer a shaded or semi-shaded location rather than full sun all day, especially during the hottest afternoon hours. Also choose a spot sheltered from the wind, which quickly dries out foliage and can break the most fragile stems.
Precautions to take
⚠ What to watch for during outdoor stay
A stay outdoors exposes your plants to new risks that are best anticipated:
- Rain can be enough to water a plant — check the soil before watering further, to avoid overwatering.
- New pests (slugs, aphids) can establish themselves more easily outdoors than indoors.
- A pot without a raised saucer can sit in a puddle after a thunderstorm — slightly elevate your pots for good drainage.
- Don't forget to bring your plants back inside before nights get cool again in the autumn, usually before mid-September depending on the region.
| Step | Indicative Period | Vigilance Point |
|---|---|---|
| Outing | Mid-May (nights > 12-13°C) | No late frost announced |
| Acclimation in shade | 1 to 2 weeks | Gradually increase light |
| Permanent installation | Summer | Avoid full afternoon sun and strong winds |
| Return indoors | Mid-September | Before the first cool nights |
With these precautions, most houseplants will fully enjoy their outdoor stay and return in the autumn with denser foliage and renewed vigor.
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We write practical guides to help enthusiasts care for their houseplants. · sosplantes@douceurmaison.fr
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