Blueberry in Zone 7A — Texas

Growing blueberries in your Texas garden is rewarding. Imagine fresh blueberry muffins made with berries you picked yourself! Blueberries are delicious, versatile, and a beautiful addition to any landscape, giving you a taste of the Pacific Northwest right here in Texas.

While Texas weather can be unpredictable, blueberries are surprisingly manageable with the right approach. Our long 245-day growing season gives them plenty of time to thrive. Just be prepared to give them a little extra TLC to combat the Texas heat.

Transplant your blueberry bushes outdoors from mid-March through early April. This timing allows the roots to establish before the full force of the Texas heat arrives. Before planting, be sure to harden off your nursery-bought, 2-3 year old plants by gradually exposing them to outdoor conditions for about a week.

Space your blueberry bushes 4-6 feet apart to allow for adequate growth and airflow. When transplanting, keep an eye on the weather forecast. A late freeze can happen, so be prepared to cover your plants if temperatures are predicted to drop.

Blueberries need consistent moisture, especially during the hot Texas summers, but they don't like soggy roots. They also need acidic soil, so using the right watering practices can help with that. Aim to keep the soil consistently moist, but not waterlogged.

During the hottest parts of summer, your blueberries might need up to 1-2 inches of water per week, depending on rainfall. Use the "finger test" to check the soil moisture about 2 inches deep. If it feels dry, it's time to water. Water at the base of the plant to avoid fungal diseases, which can be a problem with our variable humidity.

In the spring and fall, when temperatures are milder, reduce watering frequency. Watch for signs of underwatering, like wilting leaves, or overwatering, like yellowing leaves. Apply a thick layer of pine needle mulch around the base of your plants. Pine needles help retain moisture and acidify the soil, which blueberries love.

Blueberries don't need a ton of pruning, especially in their first few years. Focus on removing any dead, damaged, or crossing branches to improve airflow. Good airflow is key to prevent disease in our humid climate.

Each winter, after the first frost around mid-November, remove a few of the oldest, thickest canes at ground level. This encourages new growth and keeps the plant productive. Prune to create an open center, allowing sunlight to penetrate the entire bush.

You can expect your first blueberry harvest from mid-June through late July. It all depends on the variety and the weather we've been having. Keep a close eye on your plants as the berries start to turn blue.

The best time to harvest is when the berries are fully blue with no red or green, and they should fall easily into your hand with a gentle tug. Waiting a couple of days after they turn completely blue will give you the sweetest flavor. Harvest regularly to encourage continued production.

As the first frost approaches around mid-November, harvest any remaining berries, even if they're not quite ripe. While they won't ripen off the vine, you can still use them in jams or baking.

Here are some common problems you might encounter growing blueberries in Texas:

birds

• What it looks like: Missing berries, signs of pecking on remaining fruit.
• What causes it: Birds love blueberries just as much as we do! They're attracted to the bright color and sweet taste.
• How to fix/prevent it: Netting is the most effective solution. Cover your bushes with bird netting before the berries start to ripen.

mummy berry

• What it looks like: Berries turn tan or pink, shrivel, and drop prematurely.
• What causes it: A fungal disease that infects the blossoms. Spores are spread by wind and rain, which we can get plenty of during our unpredictable weather.
• How to fix/prevent it: Remove and destroy any infected berries. Improve air circulation by pruning. Apply a fungicide in early spring before bloom if the problem persists.

blueberry maggot

• What it looks like: Small white larvae inside the berries.
• What causes it: A fruit fly that lays its eggs inside developing berries.
• How to fix/prevent it: Use yellow sticky traps to monitor for adult flies. Apply an insecticide specifically labeled for blueberry maggot if necessary, following all label instructions.

iron chlorosis

• What it looks like: Yellowing leaves with green veins, especially on new growth.
• What causes it: Iron deficiency in the soil, often due to high pH. Blueberries need acidic soil to absorb iron properly.
• How to fix/prevent it: Amend the soil with sulfur or iron chelate to lower the pH. Use acidic fertilizers specifically formulated for blueberries.

Texas Specific Challenges: The extreme heat and unpredictable rainfall in Texas can stress blueberry plants, making them more susceptible to pests and diseases. Consistent watering, proper mulching, and selecting heat-tolerant varieties are crucial for success. Also, keep an eye out for fire ants and control them as needed to protect your plants and yourself.

Companion planting can help your blueberries thrive. Strawberries make good neighbors because they also prefer acidic soil. Thyme and basil can help repel pests with their strong scents. Azaleas, like blueberries, love acidic soil and create a beautiful, cohesive landscape.

Avoid planting blueberries near tomatoes and peppers. These plants prefer slightly alkaline soil, which can interfere with the blueberry's ability to absorb nutrients. Plus, they can attract pests that might also bother your blueberries.