How to Plant Hostas Under Trees

Hostas are a popular plant choice for shady areas and can provide a beautiful and lush addition to the base of trees. However, planting hostas under trees can be a bit challenging due to the competition for water and nutrients. Here are some tips and tricks to ensure a successful hosta planting under trees.

Start with the Right Hostas

When choosing hostas to plant under trees, it's important to select varieties that are adapted to shady conditions. There are many hosta cultivars to choose from, but some of the best for planting under trees include:

Blue Mouse Ears

Guacamole

Patriot

Sum and Substance

Golden Tiara

These varieties are shade-tolerant and are less likely to suffer from sunscald or heat stress. Additionally, they have sturdy stems and strong root systems that can withstand competition from tree roots.

Prepare the Soil

Before planting hostas under trees, it's important to prepare the soil to ensure that the hostas have the best chance of survival. Tree roots can be dense and compact, making it difficult for new plants to establish themselves. It's important to loosen the soil and amend it with organic matter before planting. Compost, leaf mold, or well-rotted manure are all good options for improving soil structure and adding nutrients.

Avoid adding too much nitrogen to the soil, as this can encourage soft, leafy growth that is more susceptible to damage from pests and diseases. Instead, focus on improving soil structure and adding micronutrients that can help hostas thrive.

Provide Adequate Water

One of the biggest challenges of planting hostas under trees is water competition. Tree roots can absorb a lot of water from the soil, leaving little for other plants. To ensure that hostas get enough water, it's important to water them regularly and deeply.

Water at the base of the plant, avoiding the leaves to prevent fungal diseases. During hot, dry weather, hostas may require more frequent watering. Consider using a soaker hose or drip irrigation system to deliver water directly to the root zone and minimize water loss through evaporation.

Mulch Around Hostas

Mulching around hostas can help to retain moisture in the soil and prevent weeds. Use a 2-3 inch layer of organic mulch, such as wood chips or shredded leaves, around the base of the plant. Be sure to keep mulch a few inches away from the stem to prevent rotting.

Mulch can also provide some insulation for hostas during winter months, helping to protect the roots from freezing temperatures. In the spring, remove any old or moldy mulch and replace it with fresh material.

Conclusion

Planting hostas under trees can be a bit challenging, but with the right hosta selection, soil preparation, watering, and mulching, you can create a beautiful and thriving hosta bed. Remember to choose shade-tolerant hosta cultivars, loosen and amend the soil, water deeply and regularly, and mulch around the base of the plant to retain moisture and prevent weeds.