Strawberry in Zone 5B — Great Plains

There's nothing quite like a sun-ripened strawberry, and they’re absolutely worth growing here in the Great Plains. The flavor is unmatched by anything you'll find in a store, plus they're incredibly versatile for jams, desserts, or just snacking. The intense sunshine here really concentrates the sugars for an amazing taste.

Our extreme weather and variable rainfall can be a challenge, but strawberries are surprisingly adaptable if you get the timing right. With our roughly 178-day growing season, you can definitely enjoy a good harvest. Knowing what to expect helps you succeed.

Transplant your strawberry starts outdoors in early to late April. This gives them a good head start before the heat of summer really hits.

Before planting, harden off your transplants by gradually exposing them to the outdoors for about a week. This helps them adjust to our wind and temperature swings.

Space the plants 12-18 inches apart to give them room to spread. Keep an eye on the forecast for late frosts, which can still happen in the Plains in April. Protect your new transplants with row covers if needed.

Strawberries need consistent moisture, especially when they're fruiting. Don't let them dry out completely, but avoid soggy soil, which can lead to fungal problems. In our Plains climate, variable rainfall means you need to pay close attention.

A good rule of thumb is the "finger test": stick your finger about 2 inches into the soil near the base of the plant. If it feels dry, it's time to water. Aim for about 1 inch of water per week, either from rain or irrigation. Because of our low-to-moderate humidity, watering at the base of the plant is best to avoid wetting the foliage, which can encourage disease. Drip irrigation is ideal.

Signs of underwatering include wilting leaves and dry, hard soil. Overwatering can cause yellowing leaves and root rot. Mulch heavily around your strawberry plants with straw or wood chips. This helps retain moisture, suppress weeds, and moderate soil temperature, which is especially important during our hot summers.

Strawberries require minimal pruning. During the growing season, remove the runners that the plants send out, unless you want them to spread and create new plants. Removing runners directs the plant's energy into fruit production.

For June-bearing varieties, renovate the beds after harvest by mowing or cutting back the foliage. This encourages new growth and better yields the following year. As the first frost approaches around mid- October, clean up any dead or decaying foliage to prevent disease from overwintering.

Your first strawberry harvest should be ready from early July through mid August, depending on the variety and the weather. Strawberries are ripe when they're fully red with no white shoulders, and they smell fragrant.

Gently pick the berries with the green cap (calyx) still attached. Harvesting in the morning, after the dew has dried, gives you the best flavor.

Keep picking the ripe berries regularly to encourage continuous production. As the first frost approaches in mid- October, harvest any remaining ripe or nearly ripe berries. You can also try covering the plants with a frost blanket to extend the harvest a bit longer.

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

Gray Mold

• What it looks like: Fuzzy gray growth on berries, especially during wet periods.
• What causes it: A fungal disease favored by high humidity and poor air circulation.
• How to fix/prevent it: Improve air circulation by spacing plants properly and pruning away dead leaves. Remove infected berries immediately. Avoid overhead watering.

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 or pecked berries.
• What causes it: Birds love strawberries!
• How to fix/prevent it: Cover plants with netting or use bird-repelling devices.

Strawberry Crown Borer

• What it looks like: Wilting plants, reduced vigor, and small, white grubs inside the crown of the plant.
• What causes it: A beetle larva that tunnels into the crown, weakening or killing the plant.
• How to fix/prevent it: Remove and destroy infested plants. Rotate strawberry beds. Apply nematodes to the soil.

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. 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).

Great Plains Specific Challenges: Our hot summers can stress strawberry plants, making them more susceptible to disease and pests. Consistent watering and mulching are crucial. The wind can also be a factor, so providing some wind protection is essential, especially for newly transplanted strawberries.

Good companions for strawberries include lettuce and spinach, as they provide ground cover and help retain moisture. Onions and garlic can deter pests. Thyme and borage are also beneficial, attracting pollinators and repelling insects.

Avoid planting strawberries near broccoli, cauliflower, pepper, and tomato. These plants can compete for nutrients or harbor diseases that can affect strawberries. Tomatoes and strawberries are also susceptible to verticillium wilt, so planting them together increases the risk of infection.