Blueberry in Zone 6A — Great Plains

Growing blueberries in the Great Plains might seem like a challenge, but the reward of fresh, sweet berries is well worth the effort. These delicious berries are perfect for snacking, pies, jams, and freezing for later. Plus, there's nothing quite like the satisfaction of harvesting your own fruit.

Our region’s extreme weather can be tough on plants, but blueberries are surprisingly adaptable with the right care. With our 188-day growing season, you have plenty of time to get a harvest if you plan accordingly. We'll walk you through everything you need to know to grow thriving blueberries.

Transplant your blueberry bushes outdoors from mid April through early May. This timing allows the plants to establish themselves before the heat of summer hits. Before planting, be sure to harden off your nursery-bought blueberry plants.

Hardening off is simple: gradually expose them to outdoor conditions for about a week. Start with an hour or two of shade, then increase the time and sun exposure each day. When planting, space your blueberry bushes 4-6 feet apart to give them plenty of room to grow. Keep an eye on the forecast for late frosts, and be ready to cover your new plants if needed.

Blueberries need consistent moisture, especially since they aren't drought-tolerant, but overwatering can be just as harmful. A good rule of thumb in our Plains climate is to water deeply about once a week, giving each plant around 1-2 inches of water. Adjust this based on rainfall and temperature. During the hottest part of the summer, you might need to water more frequently.

Use the finger test to check soil moisture: stick your finger about 2 inches into the soil near the base of the plant. If it feels dry, it's time to water. Water at the base of the plant rather than overhead to minimize fungal diseases, which can be a concern even with our low-to-moderate humidity.

Signs of underwatering include wilting leaves and dry, crumbly soil. Overwatering can cause yellowing leaves and root rot. To help retain moisture and keep the soil acidic, mulch around your blueberry bushes with pine needles. This is especially important in our variable rainfall environment.

Blueberries don't require heavy pruning, especially in the first few years. Focus on removing any dead, damaged, or crossing branches during the dormant season. This is best done in late winter or early spring, before new growth begins.

After the first few years, you can start removing the oldest, thickest canes at ground level to encourage new growth and improve air circulation. Aim for an open center to allow sunlight to reach all parts of the plant. Before our first frost around mid- October, give your plants one last check, removing any diseased or damaged growth to prepare them for winter.

You can expect your first blueberry harvest from mid July through late August in our zone. The berries are ready to pick when they are fully blue and easily fall off the bush with a gentle touch. Don't be tempted to pick them as soon as they turn blue; wait a few days for the flavor to fully develop.

Gently cup your hand underneath a cluster and lightly roll the berries off the stems. Avoid tugging or pulling, which can damage the plant. Blueberries ripen over several weeks, so check your bushes every few days for the best harvest. As the first frost approaches in mid- October, harvest any remaining berries, even if they're not quite ripe. They won't ripen off the vine, but you can still use them in baking or preserves.

Here are some common problems you might encounter with blueberries in the Great Plains:

birds

• What it looks like: Missing berries, pecked fruit, birds flitting around your bushes.
• What causes it: Birds love blueberries as much as we do. The open prairie landscape offers little natural cover, making your garden a prime target.
• How to fix/prevent it: Netting is the most effective solution. Cover your bushes with bird netting before the berries start to ripen. Reflective tape or scarecrows can also offer some deterrence.

mummy berry

• What it looks like: Shriveled, grayish-pink berries that drop prematurely.
• What causes it: A fungal disease that infects the blossoms. Cool, wet springs can exacerbate the problem.
• How to fix/prevent it: Remove and destroy any infected berries. Prune bushes to improve air circulation. Mulch with a fresh layer of pine needles to help prevent fungal spores from splashing onto the plants.

blueberry maggot

• What it looks like: Small, white larvae inside the berries.
• What causes it: Adult flies lay eggs on developing berries.
• How to fix/prevent it: Hang yellow sticky traps to catch adult flies. Apply insecticides specifically labeled for blueberry maggot if infestation is severe. Remove and destroy any infested berries.

iron chlorosis

• What it looks like: Yellowing leaves with green veins.
• What causes it: High soil pH prevents the plant from absorbing iron. Our prairie soil can sometimes be alkaline, especially in areas with hard water.
• How to fix/prevent it: Amend the soil with sulfur or peat moss to lower the pH. Use fertilizers specifically formulated for acid-loving plants. Water with rainwater or distilled water if your tap water is hard.

Great Plains Specific Challenges: Our region's extreme temperature swings and variable rainfall can stress blueberry plants, making them more susceptible to these problems. Consistent monitoring and proactive measures are key to success.

Good companions for blueberries include strawberries, thyme, basil, and azaleas. Strawberries make a good ground cover and don't compete for nutrients. Thyme and basil attract beneficial insects that can help control pests. Azaleas, like blueberries, thrive in acidic soil, creating a harmonious growing environment.

Avoid planting tomatoes and peppers near your blueberries. These plants prefer slightly alkaline soil, which can raise the pH and interfere with blueberry growth. Plus, they can attract pests that might also bother your blueberry bushes.