Strawberry in Zone 6B — Southeast

Strawberries, bursting with sweetness, are a real treat in the Southeast. Imagine plucking sun-ripened berries from your own garden, the taste far surpassing anything you can get at the grocery store. They're perfect in everything from jams and pies to simply snacking on them fresh. Plus, the plants themselves add a pretty touch to your garden.

Sure, we've got our share of challenges here in the Southeast, with the humidity and disease pressure. But with a little planning and attention to timing, you can absolutely enjoy a successful strawberry harvest. Our long 208-day growing season gives you plenty of opportunity!

Transplant your strawberry starts outdoors from late March through mid April. Be sure to harden them off for about a week beforehand. Give them some gradual exposure to the elements before planting them in their final spot.

Space your plants 12-18 inches apart to give them room to spread. Keep an eye on the weather forecast, as we can still get some unexpected cooler snaps during this time. A row cover can protect your young plants if a late frost threatens.

Strawberries need consistent moisture, especially when they're setting and ripening fruit. But in our humid Southeast climate, it's a delicate balance. You want to avoid overly wet foliage, which can lead to fungal problems. Drip irrigation is your best friend here.

During the spring, aim for about 1 inch of water per week, either from rainfall or irrigation. In the heat of the summer, especially if we're not getting our usual afternoon thunderstorms, you might need to bump that up to 1.5 inches. Stick your finger about 2 inches into the soil near the base of the plant. If it feels dry, it's time to water. Always water at the base of the plant to keep the leaves dry.

Overwatering shows up as yellowing leaves and potentially root rot. Underwatering will cause the leaves to wilt and the fruit to be small and dry. Mulch heavily around your strawberry plants with straw or pine needles. This will help retain moisture, suppress weeds, and keep the berries clean.

Strawberry pruning is pretty minimal. The main thing is to remove the runners unless you want the plants to spread. These runners take energy away from fruit production. Just snip them off where they emerge from the main plant throughout the growing season.

If you're growing June-bearing strawberries, renovate the bed after harvest. This involves mowing the foliage down to about an inch tall. It sounds drastic, but it encourages new growth and better yields next year. As the first frost approaches in late October, remove any dead or diseased foliage to prevent overwintering of pests and diseases.

Expect your first strawberry harvest sometime from mid June through early August, depending on the variety and the weather we've been having. The berries are ready to pick when they are fully red, with no white shoulders. They should also be fragrant.

Gently twist the berry off the plant, leaving the green cap attached. Harvesting in the morning, after the dew has dried, will give you the best flavor. Keep picking regularly to encourage continued production. As the first frost approaches in late October, harvest any remaining ripe berries. Don't expect them to ripen much more once the weather cools down.

Here are some common problems you might encounter growing strawberries in the Southeast:

Gray Mold (Botrytis)

• What it looks like: Fuzzy gray mold on the berries, especially after wet weather. Can also affect leaves and stems.
• What causes it: A fungal disease that thrives in our humid conditions. Spores spread easily in the air.
• How to fix/prevent it: Improve air circulation by spacing plants properly and pruning out excess foliage. Remove and destroy infected berries immediately. Apply a fungicide preventatively, especially before periods of wet weather.

Slugs

• What it looks like: Irregular holes in leaves, especially low-growing plants. Silvery slime trails on leaves and soil. Damage worse at night and in wet weather.
• What causes it: Gastropods that feed at night in moist conditions. Hide under mulch, boards, and debris during the day.
• How to fix/prevent it: Beer traps (shallow dish of beer sunk into soil). Iron phosphate bait (pet-safe). Remove hiding spots. Water in morning so soil surface dries by evening. Copper tape around beds. Diatomaceous earth around plants.

Birds

• What it looks like: Missing berries, pecked fruit, and general signs of avian activity.
• What causes it: Birds love ripe strawberries!
• How to fix/prevent it: Netting is the most effective solution. You can also try bird-scaring devices like shiny tape or decoys.

Strawberry Crown Borer

• What it looks like: Wilting plants, stunted growth, and small holes in the crown of the plant.
• What causes it: A beetle larva that tunnels into the crown of the plant, weakening or killing it.
• How to fix/prevent it: Remove and destroy infested plants. Rotate your strawberry patch to a new location every few years. Apply beneficial nematodes to the soil to target the larvae.

Verticillium Wilt

• What it looks like: Lower leaves yellow, wilt, and die, progressing upward. One side of plant may be affected first. Brown streaks in stem cross-section.
• What causes it: Soil-borne fungus that persists for years. Cooler soil temperatures favor it (unlike fusarium). Wide host range.
• How to fix/prevent it: No cure — remove infected plants. Rotate with non-susceptible crops (corn, grains). Solarize soil. Plant resistant varieties (look for 'V' on labels).

Southeast Specific Challenges: The hot and humid summers in the Southeast create ideal conditions for fungal diseases like gray mold. Japanese beetles can also be a nuisance, skeletonizing the leaves. Deer might sample your plants if they can get to them. Our clay soil can be challenging, so amending with compost is essential for good drainage.

Strawberries benefit from having the right neighbors. Lettuce and spinach make good companions because they are low-growing and don't compete for resources. Onions and garlic help deter pests. Thyme and borage attract beneficial insects that can help control aphids and other strawberry pests.

Avoid planting strawberries near broccoli, cauliflower, peppers, and tomatoes. These plants are susceptible to verticillium wilt, which can easily spread to your strawberries. They also compete for the same nutrients in the soil.