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You can plant peace lilies outside, but only if you live in a warm, frost-free climate.
If you’ve been dreaming of moving your peace lily from a pot on the windowsill to a shady corner of your garden, you might be wondering if planting peace lilies outside is actually a good idea.
The short answer is yes, peace lilies can thrive outdoors, but they are tropical plants that need specific conditions to survive and flourish.
In this post, we’ll break down exactly when you can plant peace lilies outside, the best spots for them, and how to care for them once they’re in the ground.
Let’s dig into everything you need to know about growing these elegant plants in your outdoor space.
Why You Can Plant Peace Lilies Outside In The Right Climate
The main reason you can plant peace lilies outside is that they are native to tropical rainforests, where temperatures stay warm year-round.
These plants are not cold-hardy at all, so they will only survive outdoors in USDA hardiness zones 10 through 12.
If you live in a region with mild winters and no frost, your peace lilies can live happily outside as permanent garden plants.
However, if you experience freezing temperatures, you’ll need to treat them as annuals or bring them indoors during the cooler months.
So, can you plant peace lilies outside in your area? It all comes down to your local climate and how much effort you’re willing to put into protecting them.
1. Temperature Requirements For Outdoor Peace Lilies
Peace lilies prefer temperatures between 65°F and 85°F, and they absolutely cannot tolerate temperatures below 50°F for extended periods.
When you plant peace lilies outside, you need to wait until all danger of frost has completely passed in the spring.
A single cold snap can damage the leaves, and prolonged cold can kill the plant down to the roots.
In tropical climates, you can plant peace lilies outside anytime, but in subtropical areas, early summer is the safest bet.
Always check your local frost dates before moving your peace lily outdoors.
2. Shade Is Non-Negotiable For Outdoor Peace Lilies
One of the biggest mistakes people make when planting peace lilies outside is putting them in direct sunlight.
Peace lilies are understory plants that naturally grow beneath the forest canopy, so they receive filtered, dappled light rather than harsh sun.
Direct morning sun is okay, but afternoon sun will scorch the leaves, causing them to turn brown and crispy.
The perfect outdoor spot for peace lilies is a north or east-facing area that gets bright but indirect light all day.
If you can plant peace lilies outside under a tree, on a covered patio, or along a shaded fence line, they will reward you with lush green foliage.
3. Soil And Drainage Needs For Outdoor Peace Lilies
When you plant peace lilies outside, you must ensure the soil is rich, well-draining, and slightly acidic to neutral.
These tropical beauties love organic matter, so amending the soil with compost or peat moss before planting is a great idea.
They also need consistently moist soil, but they hate sitting in water, which can lead to root rot.
If your garden soil is heavy clay, consider planting peace lilies in a raised bed or a container sunk into the ground to improve drainage.
A layer of mulch around the base will help retain moisture and keep the roots cool, just like the forest floor.
How To Plant Peace Lilies Outside Step By Step
If you’ve decided that your climate is suitable, here’s exactly how to plant peace lilies outside for the best chance of success.
The process is pretty straightforward, but paying attention to the details will make a huge difference in how well your plant settles in.
Follow these steps, and your peace lily will be thriving in your garden in no time.
1. Choose The Right Time of Day
The best time to plant peace lilies outside is on a cloudy day or in the late afternoon when the sun is less intense.
This reduces transplant shock because the plant isn’t immediately hit with harsh heat or direct sunlight.
Water the peace lily thoroughly in its current pot a few hours before you plan to transplant it.
This ensures the root ball is hydrated and holds together well when you remove it.
2. Dig a Generous Hole
Dig a hole that is about twice as wide as the root ball and just as deep.
Loosen the soil in the hole and mix in some compost to give your peace lily a nutrient-rich start.
Gently remove the peace lily from its pot and loosen any tightly bound roots with your fingers.
Place the plant in the hole so the top of the root ball is level with the surrounding soil surface.
3. Backfill And Water Well
Fill the hole back in with the amended soil, patting it down gently to remove any air pockets.
Water deeply right after planting to help the soil settle around the roots.
Add a layer of mulch, about two inches thick, around the base of the plant, keeping it a few inches away from the stem.
This will help lock in moisture and keep the soil temperature stable.
Caring For Peace Lilies Planted Outside
Once you’ve successfully planted peace lilies outside, your job isn’t over, they need ongoing care to look their best.
The good news is that outdoor peace lilies are actually lower maintenance than indoor ones in many ways.
They get natural rainfall, better air circulation, and more space for their roots to spread.
But you still need to stay on top of a few key things to keep them happy.
1. Watering Frequency For Outdoor Peace Lilies
Outdoor peace lilies will need more water than indoor ones, especially during hot, dry spells.
Check the top inch of soil regularly, and when it feels dry to the touch, it’s time to water.
In the summer, you might need to water every couple of days, while in cooler weather, once a week may be plenty.
If you can plant peace lilies outside in a naturally damp area near a water feature, they’ll be even happier.
2. Fertilizing Outdoor Peace Lilies
Feed your outdoor peace lilies with a balanced, water-soluble fertilizer every six to eight weeks during the growing season.
Use a formula like 20-20-20 diluted to half strength to avoid burning the sensitive roots.
Stop fertilizing in the fall and winter when the plant’s growth naturally slows down.
Over-fertilizing can cause leaf tips to brown, so it’s always better to go easy.
3. Protecting Peace Lilies From Pests and Frost
While outdoor peace lilies are pretty resistant to pests, keep an eye out for aphids, mealybugs, and spider mites.
A strong spray of water or a little insecticidal soap will handle most infestations.
If you live in a marginal climate and want to plant peace lilies outside in the summer only, you’ll need to bring them indoors when temperatures drop below 50°F.
You can also dig them up and pot them for the winter, or simply treat them as annuals and replace them next year.
So, Can You Plant Peace Lilies Outside?
You can plant peace lilies outside, provided you live in a warm, frost-free climate and give them the right conditions.
When you plant peace lilies outside in zones 10 to 12, they will grow happily in shaded spots with rich, moist soil.
If you don’t live in those zones, you can still enjoy them outdoors as potted plants during the summer.
Just be prepared to move them inside before the cold weather arrives, as peace lilies simply cannot handle frost.
The key to success when planting peace lilies outside is mimicking their natural tropical habitat as closely as possible.
Provide good shade, consistent moisture, and protection from temperature extremes, and your peace lily will flourish.
So yes, you can plant peace lilies outside, and with a little care, they can become a stunning focal point in your garden.
Whether you’re adding them to a shaded border or grouping them under a tree, these graceful plants will bring a touch of the tropics to your outdoor space.
Now grab your shovel and find that perfect shady spot, your peace lilies are ready to make the move outside.