Blueberries are a delightful addition to any garden, providing both beauty and a bounty of antioxidant-rich fruit. However, to maximize their growth and ensure a healthy harvest, it’s crucial to choose companion plants wisely.
Some plants can compete for nutrients or invite pests, while others can offer valuable support. This guide covers the best and worst companion plants for blueberries, ensuring your shrubs thrive in your garden for years to come.
Blueberry Growing Needs
Before selecting companion plants, it’s important to understand blueberries’ specific growing requirements. They thrive in acidic, well-draining soils with a pH between 4.0 and 4.8.
These shrubs also require consistent moisture, especially during their early years of growth, as their shallow, sensitive roots are easily damaged. Proper care and thoughtful planting decisions can help maximize both the ornamental and edible value of blueberries in your garden.
What NOT to Grow with Blueberries
Suckering Shrubs
While blueberries are versatile in the landscape, they should not be planted near aggressive, suckering shrubs. These plants spread rapidly and can steal nutrients and water from blueberries.
Avoid planting blueberries next to the following:
- Eleagnus (Autumn Olive)
- Burning Bush
- Japanese Barberry
- Privet
These fast-growing shrubs can quickly outcompete blueberries, depriving them of essential nutrients, moisture, and sunlight, ultimately stunting their growth and reducing fruit yield.
Nightshades
Nightshade vegetables, such as tomatoes, peppers, and potatoes, should not be grown near blueberries. While nightshades tolerate slightly acidic soils, they generally prefer a neutral pH (6.2 to 6.8), which is incompatible with the blueberries’ need for more acidic conditions. Moreover, nightshades are heavy feeders and may strip the soil of nutrients that blueberries require to thrive.
Brassicas
Plants in the Brassica family, such as broccoli, cabbage, and kale, are also heavy feeders. They tend to absorb a significant amount of nutrients and moisture from the soil, which may leave blueberries with insufficient resources. Brassicas also prefer slightly alkaline soils, unlike blueberries, which prefer highly acidic soil conditions.
Aggressive Herbs
Certain herbs can also present problems when planted near blueberries. Herbs like mint and lemon balm are known for their aggressive spreading and can compete for nutrients. While they have beneficial qualities, such as pest repelling, their ability to spread rapidly via runners can outcompete blueberries for resources. It’s best to grow these herbs in containers or separate beds.
Aggressive Grasses
Some grasses, such as Pampas Grass, Miscanthus, and Fountain Grass, can invade and outcompete blueberries. These grasses are tough to remove once established and may crowd blueberries, depriving them of essential nutrients and space for healthy root development.
The Best Companion Plants for Blueberries
Azaleas
Azaleas are excellent companions for blueberries because they share a love of acidic soils and consistent moisture. These flowering shrubs offer a burst of color in early spring, attracting pollinators like bees and butterflies, which also benefit blueberries. Azaleas thrive in partial to full shade and have similar growing requirements, making them an ideal neighbor for blueberries.
Hydrangeas
Hydrangeas, with their large, vibrant blooms, pair beautifully with blueberries. Both plants require similar conditions, acidic, well-drained soil and consistent moisture. Hydrangeas not only attract pollinators but also provide a lovely visual contrast with blueberries, especially when their blooms coincide with blueberry fruiting. For the best results, plant hydrangeas where they will receive morning sun but are protected from the harsh afternoon heat.
Camellias
Camellias, with their evergreen charm and vibrant blooms, make excellent companions for blueberries. They share similar soil and moisture requirements, and their bright flowers in fall and winter provide interest during off-seasons. In southern climates, Camellia sasanqua is an excellent choice, as it tolerates more sunlight than other varieties, making it suitable for full sun to partial shade.
Holly
Hollies, particularly American holly (Ilex opaca) and Yaupon holly (Ilex vomitoria), thrive in the same acidic soils as blueberries. They offer seasonal interest with attractive berries and foliage. Hollies are low-maintenance and require only occasional spring fertilization. These plants provide pollinator and wildlife value and serve as an effective backdrop for blueberries.
Pieris
Pieris, often known as Japanese andromeda, is a wonderful companion plant for blueberries. The pendulous white flowers of the pieris resemble blueberry blossoms, making them an aesthetically pleasing neighbor. Pieris thrives in acidic, well-drained soils and shares similar sunlight and moisture requirements with blueberries. The bronze new growth of pieris adds dynamic foliage color, creating a striking contrast with the blueberries’ foliage.
Gardenia
Gardenias are another excellent companion plant for blueberries, especially in warmer climates. They thrive in acidic, consistently moist soils, which makes them compatible with blueberries’ growing needs. The fragrant white flowers of gardenias bloom in early summer, providing both visual and aromatic appeal. These plants also attract pollinators, including moths, which overlap with blueberry flowering seasons.
Ground Covers That Support Blueberries
Sometimes the best companions are the ones that stay low and mind their business. Blueberries have shallow roots, so the wrong ground cover can quietly cause problems underground. But the right ones can actually help.
Pine needles make an excellent natural mulch. They help maintain soil acidity and conserve moisture, which blueberries absolutely love. You’re not really planting anything, but you’re creating the right environment. And honestly, that matters just as much.
Cranberries are another interesting option. They share similar soil preferences and create a living ground cover that reduces weeds while keeping moisture in the soil. Just make sure they have space to spread without crowding the blueberry roots.
Pollinator-Friendly Plants That Boost Yields
Blueberries depend heavily on pollinators for fruit production. So if you want bigger harvests, think beyond the shrub itself.
Plants like lavender, bee balm, and salvia attract bees and butterflies that will also visit blueberry blossoms. The more pollinator traffic in your garden, the better your yields tend to be.
Early blooming flowers are especially helpful. They encourage pollinators to settle into your garden before blueberry flowering begins. It’s a small strategy that can make a noticeable difference.
