Will indoor plants survive outside?

Should you move houseplants outside for the summer? 

We get asked this question a lot as people see houseplants on other people's social media accounts flourishing and enjoying the sunshine outside. 

The short answer is yes—but with care as every houseplant is different and everyone's "outside" is different. 

Taking houseplants outdoors for summer can be a fantastic way to help them thrive, encouraging lush growth and vibrant foliage. However, it’s essential to transition them correctly and know which plants need extra protection.

I'll talk you through why you might want to move your houseplants outside, when and how to do it, and how to keep them healthy all summer long. Plus, I'll highlight some plants that prefer shade and share expert tips for success.

Why Should You Put Houseplants Outside?

Bringing houseplants outdoors for summer can actually be really beneficial for them. 

  • Improved growth. When outdoors, the plants will get more light, humidity, and air circulation. It's going to feel much closer to their own natural habitat. You indoor windowsill is only a poor substitute for the WILD, unfortunately. 

  • Stronger, more resilient plants. Letting your plants get exposure to outdoor elements can help toughen then up, This can make them less susceptible to pests and disease.

  • Natural cleaning. The rain on their leaves can also help wash dust off allowing for better photosynthesis, and therefore more growth. 

However, it’s not as simple as plopping your plant on the patio. Outdoor environments can be more intense. That means you need to be really careful to acclimatise your plants. 

When Do You Move Houseplants Outside for Summer?

Timing is everything. You should wait until after the last frost in your region and when night temperatures consistently stay above 10°C (50°F). For most UK gardeners, this typically means mid-to-late May. In Northern Ireland this may be later. 

Start by placing your plants in a shaded, sheltered area for a week or two to allow them to adjust. Gradually increase their exposure to sunlight and wind over 7–10 days. Sudden changes can shock your plants—or worse, burn them. This is when the leaves will go brown.

As the Royal Horticultural Society (RHS) warns: "Even cacti can burn if exposed to direct sunlight outdoors when first moved from indoors. This is because the light levels are far more intense outdoors than indoors." – RHS

What houseplants will like being outside in summer?

 Succulents, cacti, and jade plants are going to thrive in warm, dry conditions and will really enjoy the full sun once acclimated. Above 15oC will suit them best. 

Ficus, rubber plants, and dracaenas will also love bright but indirect light and can handle temperatures between 15–29°C (59–84°F). 

A Bird of paradise enjoy heat so if you get temperatures of 18oC they will be happy uip to about 32°C. But keep them well-watered.

Even monstera and spider plants can benefit from fresh air and dappled sun in mild conditions. Again - don't put them out till you're getting above 18oC

Just be sure to bring all houseplants back inside before night-time temperatures begin to dip in early autumn.

How Should You Treat Houseplants When They’re Outside Over Summer?

Once your houseplants have adjusted to outdoor conditions, you’ll need to treat them a little differently than when they’re inside. 

1. Water carefully

Outdoor conditions often mean more evaporation. Monitor the soil daily and water more frequently, especially during dry spells or heatwaves. Just make sure containers drain well to avoid root rot.

2. Watch for pests

Being outside means exposure to a whole new cast of critters. Keep an eye out for slugs, snails, aphids, and spider mites. A regular inspection can help you catch infestations early.

3. Feed regularly

Outdoor growth is often more vigorous, which means your plant may need more nutrients. Use a balanced houseplant liquid fertiliser every 2–4 weeks, depending on the plant.

4. Protect from wind and rain

Strong gusts or heavy rain can knock over delicate plants or damage leaves. Position them in sheltered spots, like near fences or walls—and consider bringing them in during storms.

5. Monitor sun exposure

Too much direct sun too quickly can scorch leaves. Gradual exposure is crucial. You might also move containers around as the sun shifts during the day.

 

Houseplants outside

Plants That Will Need Shade Outside

Not all houseplants love full sun. Some prefer indirect light or dappled shade. If you have any of the following, make sure they’re placed in a shady, protected area:

  • Ferns: Thrive in high humidity and low light.

  • Peace lilies: Direct sun can scorch their leaves.

  • Calatheas: Love shade and struggle with bright light.

  • Pothos and Philodendrons: Great for hanging in a shady corner.

  • Orchids: Prefer bright but indirect light.

  • Snake plants: Can tolerate some sun but prefer filtered light outdoors.

If in doubt, morning sun and afternoon shade is a safe bet for most houseplants.

Top Tips for Success

  • Acclimate gradually: Don’t rush the transition, start with shade and build up slowly.

  • Check the forecast: Sudden cold snaps or storms? Bring your plants back in temporarily.

  • Keep containers off hot surfaces: Avoid placing pots on concrete or metal, which can overheat roots.

  • Stay on pest patrol: Inspect weekly for unwanted visitors.

  • Rotate regularly: Help plants grow evenly by turning them every few days.

Yes, putting houseplants outside can be great for them, but if you live in Northern Ireland, you need to be careful and keep a constant eye on the weather. Even in late May it can be a chilly start, and not up to higher temperatures till after lunch. 

I would recommend putting plants out when you have time to monitor them.

Thinking about moving your houseplants outdoors for summer but not sure where to start? The team at The Greeneasters is here to help! Whether you're dealing with sunburnt succulents or want tips on creating the perfect shaded plant nook, our plant experts have the answers.

🌿 Call or visit us today in The Studio on Newtownards road or The Kiosk in Banana Block for personalised advice and care tips for your favourite houseplants.

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