Plant Ferns & Hostas Together: A Comprehensive Guide

Ferns and hostas are two of the most beloved shade-loving plants, known for their lush foliage and low maintenance requirements. Planting them together in your garden or landscape can create a stunning, verdant oasis. But how do you go about planting these two beautiful plants side by side? Let's dive into a comprehensive guide on how to plant ferns and hostas together, ensuring a thriving, healthy garden for years to come.

Before we delve into the planting process, it's essential to understand the growing conditions that ferns and hostas prefer. Both plants thrive in partial to full shade, with hostas preferring a bit more sunlight than ferns. They also both require consistently moist, well-draining soil. By providing these ideal conditions, you'll create a perfect environment for your ferns and hostas to flourish.

Preparing Your Planting Site

Choosing the right location for your ferns and hostas is crucial. As mentioned earlier, both plants prefer shade, so select a spot that receives dappled sunlight or filtered light. Areas under deciduous trees or near the north side of buildings are usually ideal. Additionally, ensure the site has easy access to water, as both plants require consistent moisture.

Once you've chosen the perfect spot, test your soil's pH and drainage. Ferns and hostas prefer slightly acidic to neutral soil with a pH between 6.0 and 7.0. If your soil is too alkaline, you can amend it with sulfur or peat moss. To improve drainage, consider incorporating organic matter, such as compost or well-rotted manure, into the soil.

Testing Soil pH and Drainage

To test your soil's pH, you can purchase a simple pH testing kit at your local garden center or nursery. Follow the kit's instructions to determine your soil's pH level. If the pH is too high, you can lower it by adding sulfur or peat moss. Keep in mind that it may take several months for the pH to change significantly, so plan accordingly.

To test drainage, dig a hole about 12 inches deep and fill it with water. Allow the water to drain completely, then fill the hole again. If the water drains within a few hours, your soil has good drainage. If it takes more than a day, you may need to improve drainage by incorporating organic matter or raising the planting bed.

Amending the Soil

Once you've tested and prepared your soil, it's time to amend it with organic matter. This will improve drainage, aerate the soil, and provide essential nutrients for your ferns and hostas. Work the organic matter into the top 6 to 12 inches of soil, mixing it thoroughly with the native soil.

After amending the soil, it's a good idea to let it rest for a few weeks before planting. This allows the organic matter to break down further and the soil to settle. During this time, you can also plan your planting design, considering the size and growth habits of your ferns and hostas.

Designing Your Fern and Hosta Garden

When designing your fern and hosta garden, consider the mature sizes of both plants. Ferns typically grow between 12 to 36 inches tall, while hostas can range from 6 to 36 inches in height. Space your plants accordingly, allowing for growth and creating a lush, layered effect.

To create visual interest, group plants with similar growth habits and colors together. For example, you might plant taller ferns and hostas in the back of a bed, with shorter varieties in the foreground. Alternatively, you could create a striking contrast by pairing boldly patterned hostas with delicate, lacy ferns.

Choosing Ferns and Hostas

When selecting ferns and hostas, consider the wide range of varieties available. Ferns come in many shapes and sizes, from the delicate maidenhair fern (Adiantum spp.) to the robust polystichum ferns. Hostas, too, offer a vast array of colors, patterns, and textures, from the classic green hosta (Hosta spp.) to the striking blue-grey 'Patriot' hosta.

To create a cohesive garden design, choose ferns and hostas with complementary colors and textures. For example, the bright green, crinkled leaves of the 'Guacamole' hosta pair beautifully with the dark green, leathery fronds of the western sword fern (Polystichum munitum). By selecting plants that work well together, you'll create a harmonious, inviting garden space.

Planting Ferns and Hostas

Now that you've prepared your planting site and chosen your ferns and hostas, it's time to plant. Begin by digging a hole for each plant that's twice as wide and just as deep as the plant's root ball. Gently remove the plant from its container, loosening any tangled roots.

Place the plant in the hole, ensuring the crown (the point where the roots meet the stem) is level with the ground. Fill in the soil around the plant, gently firming it down to eliminate air pockets. Water the plant thoroughly, allowing the water to soak in and settle the soil.

Caring for Your Fern and Hosta Garden

Proper care is essential for keeping your fern and hosta garden healthy and vibrant. Both plants require consistently moist soil, so water them deeply once or twice a week, depending on rainfall and soil conditions. To conserve water and suppress weeds, consider applying a 2- to 3-inch layer of organic mulch around your plants.

Fertilizing your ferns and hostas will help them grow strong and lush. Apply a balanced, slow-release fertilizer in the spring, following the package instructions. You can also side-dress your plants with compost or well-rotted manure each year to provide additional nutrients.

Mulching and Watering

Mulching your fern and hosta garden offers several benefits, including moisture retention, weed suppression, and soil temperature regulation. Apply a 2- to 3-inch layer of organic mulch, such as wood chips or straw, around your plants, keeping it a few inches away from the stems to prevent rot. This will help maintain consistent moisture levels and suppress weeds, reducing the need for frequent watering and weeding.

Watering your ferns and hostas consistently is crucial for their health and growth. Both plants require consistently moist soil, so water them deeply once or twice a week, depending on rainfall and soil conditions. To check if your plants need water, insert a wooden skewer or chopstick into the soil. If it comes out dry, it's time to water.

Fertilizing and Dividing

Fertilizing your ferns and hostas will help them grow strong and lush. Apply a balanced, slow-release fertilizer in the spring, following the package instructions. This will provide essential nutrients for your plants, promoting healthy growth and lush foliage. You can also side-dress your plants with compost or well-rotted manure each year to provide additional nutrients.

As your ferns and hostas grow, you may need to divide them to control their size and maintain their vigor. Most ferns and hostas can be divided every 3 to 5 years. To divide a plant, carefully dig it up and gently separate the roots into smaller sections. Replant each section as you would a new plant, ensuring the crown is level with the ground. Water the divided plants thoroughly to help them establish in their new locations.

As you tend to your fern and hosta garden, you'll be rewarded with a lush, verdant oasis that provides beauty and tranquility throughout the growing season. By following the guidelines outlined in this article, you'll create a thriving garden that both you and your plants can enjoy for years to come. So go ahead, embrace your green thumb, and create the stunning fern and hosta garden of your dreams.