Can You Grow A Boston Fern Outdoors?

Thinking about growing a Boston fern outdoors? You're not alone! These lush and leafy beauties have been charming plant lovers for ages, and it’s no wonder why. With their vibrant green foliage and graceful appearance, Boston ferns are a favorite for both indoor and outdoor spaces. But can they thrive outside all year round?

In this article, we'll chat about everything you need to know about growing a Boston fern outdoors—from the right climate conditions to practical care tips. Whether you're a seasoned plant parent or just getting started, you’ll find useful insights and tips along the way.

Understanding Boston Ferns: A Quick Overview

Before we get into the nitty-gritty of outdoor care, let's take a step back and get to know the Boston fern a little better. Scientifically known as Nephrolepis exaltata, this fern is native to tropical and subtropical regions. It’s particularly popular for its arching fronds and ability to add a touch of nature’s elegance to any setting.

Boston ferns love humidity and thrive in warm temperatures. They’ve been a staple in plant collections since the Victorian era, often found gracing porches and hanging baskets. While they're typically grown indoors, with the right conditions, they can also make a lovely addition to your outdoor garden.

Now, you might be wondering, what makes Boston ferns so special? It’s their resilience and adaptability. While they have specific preferences (don't we all?), they can adjust to various environments with a bit of care.

Climate Considerations: Can Your Region Support Boston Ferns?

One of the first things to consider when thinking about growing Boston ferns outdoors is your local climate. These ferns are happiest in USDA zones 9 to 11, where temperatures are mild, and the humidity is relatively high.

If you're not sure about your USDA zone, a quick online search can help you figure it out. Here’s what to keep in mind:

• Warmth: Boston ferns prefer temperatures between 65°F and 75°F. They can tolerate a bit of chill but don't fare well in temperatures below 50°F.
• Humidity: High humidity is a must. If you live in a dry area, you might need to provide some extra moisture.
• Rainfall: These ferns enjoy regular rainfall, but they don’t like to sit in waterlogged soil. Ensure your outdoor spot has good drainage.

Interestingly enough, if you live in a region with colder winters, you can still enjoy Boston ferns outdoors, but you may need to bring them inside during the chilly months.

Choosing the Right Spot: Sunlight and Shelter

Picking the perfect spot for your Boston fern is a bit like choosing a new home. You want a place that’s cozy, with just the right amount of light and protection from harsh elements.

Sunlight: Boston ferns thrive in filtered or indirect sunlight. Think dappled light under a tree or a shaded porch. Direct sun can scorch their fronds, turning them brown. If your outdoor space is mostly sunny, consider using a shade cloth or placing your fern in a spot that gets morning sun and afternoon shade.

Shelter: Wind and heavy rain can be tough on Boston ferns. Choose a location that offers some protection, like a covered patio or a spot near a solid fence. This not only keeps them safe but also helps maintain a consistent environment that they love.

The right spot can make all the difference in how well your fern grows, so take some time to observe your outdoor space and find that sweet spot.

Soil and Planting Tips: Setting Up for Success

When it comes to planting Boston ferns outdoors, soil quality is a top priority. These ferns are a bit picky about their soil, preferring a mix that mimics their natural habitat.

Soil Type: A well-draining potting mix is ideal. You can create your own by combining equal parts peat moss, perlite, and pine bark. This mix will help retain moisture without becoming waterlogged, which is crucial for Boston ferns.

pH Level: Aim for a slightly acidic to neutral pH, around 6.0 to 7.0. You can test your soil using a simple pH kit from any garden center.

Planting: When planting, dig a hole that’s twice the diameter of the pot your fern came in and just as deep. This gives the roots plenty of room to spread out. Gently remove the fern from its pot, being careful not to damage the roots, and place it in the hole. Fill in with your potting mix, pressing down lightly to remove any air pockets.

Remember, Boston ferns don’t like to be buried too deep. The crown of the plant should be at soil level to prevent rot.

Watering Wisely: Keeping Your Fern Hydrated

Watering is one of the most important aspects of fern care. While Boston ferns love moisture, they dislike sitting in soggy soil.

How Often to Water: This depends on your local climate and the specific needs of your fern. Generally, you want the soil to be consistently moist but not waterlogged. During the warmer months, you may need to water more frequently, especially if you live in a hot, dry area.

Watering Technique: Water your fern at the soil level, avoiding the foliage to prevent fungal diseases. A soaker hose or drip irrigation system can be a great way to ensure even watering without wetting the leaves.

If you’re unsure whether your fern needs water, stick your finger into the soil. If the top inch feels dry, it’s time for a drink. On the other hand, if the soil still feels moist, hold off a bit.

Feeding Your Fern: Fertilizers and Nutrients

Like humans, plants need a balanced diet to thrive, and Boston ferns are no exception. While they don’t require heavy feeding, a little nutritional boost now and then can do wonders.

Fertilizer Type: Use a balanced, water-soluble fertilizer. A ratio of 20-20-20 works well, providing an equal mix of nitrogen, phosphorus, and potassium. You can also opt for a slow-release fertilizer if you prefer less frequent applications.

How Often to Feed: Feed your fern every 4 to 6 weeks during the growing season (spring and summer). In fall and winter, reduce feeding as the plant’s growth slows down.

Be cautious not to over-fertilize, as this can lead to burnt leaves and root damage. Less is more when it comes to feeding ferns.

Dealing with Pests and Diseases

While Boston ferns are generally hardy, they can occasionally face issues with pests and diseases. Common invaders include spider mites, mealybugs, and scale insects.

Spider Mites: These tiny pests can cause yellowing leaves and a speckled appearance. You might notice fine webbing as well. Combat them with a strong spray of water or insecticidal soap.

Mealybugs and Scale: These sap-suckers often appear as white, cottony masses or hard, brown bumps on the leaves. A cotton swab dipped in rubbing alcohol can help remove them effectively.

Fungal Diseases: Overwatering or poor air circulation can lead to fungal issues like leaf spot or root rot. Ensure your fern has good drainage and airflow to prevent these problems.

Regularly inspect your ferns for any signs of trouble. Early detection and treatment can save your plant from more severe damage.

Pruning and Maintenance

Pruning might sound intimidating, but it’s really just a bit of grooming to keep your fern looking its best. Regular maintenance can encourage new growth and keep your plant healthy.

When to Prune: Trim away dead or damaged fronds as needed. This not only improves the plant’s appearance but also prevents disease spread.

How to Prune: Use clean, sharp scissors or pruners. Cut fronds at the base, near the soil level, to avoid leaving stubs that can invite pests.

Pruning also helps increase airflow around the plant, reducing the risk of fungal issues. Don’t be afraid to give your fern a little haircut—it will thank you with lush new growth!

Overwintering: Bringing Your Fern Indoors

If you live in a region with cold winters, you’ll need to bring your Boston fern indoors to keep it safe from frost. Here’s how to do it:

• Timing: Move your fern indoors before the first frost. This is usually in late fall, depending on your local climate.
• Preparation: Give your fern a thorough inspection for pests and diseases before bringing it inside. Quarantine it from your other plants for a week or two to ensure it’s healthy.
• Indoor Care: Place your fern in a bright, indirect light location. Continue regular watering and reduce fertilizing during the winter months.

By providing a cozy indoor environment, your fern will be ready to head back outdoors once the warmer weather returns.

Final Thoughts

Growing a Boston fern outdoors can be a delightful endeavor, adding natural beauty and a touch of green to your outdoor space. By considering your climate, providing the right care, and keeping an eye on potential pests, your fern can thrive beautifully outside.

At Cafe Planta, we’re passionate about helping you care for your plants. Whether you need advice on plant care or are looking for new additions to your collection, we're here to help. You can email us or reach out on Instagram. We're excited to share our love of plants with you and support your journey in creating a thriving plant collection at home.