Anaheim Pepper in Zone 5B — Great Plains

Anaheim peppers are a great choice for Plains gardeners looking for a mild heat and amazing versatility. They're perfect for roasting, stuffing, or adding a little kick to your favorite dishes. Plus, there's real satisfaction in harvesting your own peppers after nurturing them through our long, sunny days.

Our region definitely throws some curveballs – extreme temperature swings and variable rainfall are just part of the deal. But with careful timing and attention, you can absolutely grow Anaheim peppers successfully in our 178-day growing season. Starting indoors is key to get a jump start.

Starting Anaheim peppers indoors is essential to get a head start in our climate. Start your seeds indoors from early to late March, about 8 weeks before you plan to transplant them outside. This gives them plenty of time to mature before our first frost hits in mid-October.

Use seed trays or small pots filled with a good seed-starting mix. Keep the soil consistently moist, and provide bottom heat to speed up germination. A heat mat is perfect. Once seedlings emerge, provide plenty of light. A simple shop light works fine, or a grow light if you have one. Bottom watering is key to prevent damping off. Remember, spring in the Plains can be unpredictable, so keep an eye on the weather and adjust your watering accordingly.

Transplant your Anaheim pepper seedlings outdoors from early May through early June, once the danger of frost has passed. Before transplanting, you'll need to harden off your seedlings. This means gradually exposing them to outdoor conditions for about a week. Start with an hour or two of shade, then gradually increase the amount of sun and wind they receive each day.

Plant your seedlings 18-24 inches apart in a sunny spot with well-drained soil. Water them well after transplanting. Keep an eye on the weather forecast – a late frost or sudden hailstorm can set your plants back. Using row covers can help protect your young plants from the elements.

Anaheim peppers need consistent moisture, but they don't like to be waterlogged. In the Plains, this can be tricky, given our variable rainfall and intense summer heat. During the hottest part of the summer, you'll likely need to water them deeply a couple of times a week, providing about 1-2 inches of water each time.

The best way to tell if your plants need water is to do the "finger test". Stick your finger into the soil about 2 inches deep. If it feels dry, it's time to water. Water at the base of the plant to avoid wetting the foliage, which can encourage disease in our moderate humidity.

Signs of underwatering include wilting leaves and slow growth. Overwatering can lead to yellowing leaves and root rot. A good layer of mulch around your plants will help retain moisture and keep the soil cool, especially during our hot summers.

Anaheim pepper plants can get quite tall and heavy with fruit, so providing support is a good idea. While not always necessary, staking is especially helpful in our windy climate.

Tomato cages work well, or you can use individual stakes tied to the main stem. Install the supports at planting time to avoid disturbing the roots later. As the plants grow, gently tie the stems to the supports with soft twine or plant tape. This will help prevent the branches from breaking under the weight of the peppers, especially during strong winds.

Pinching off the first few flowers that appear on your Anaheim pepper plants can encourage them to produce more fruit later in the season. It seems counterintuitive, but it really works! This directs the plant's energy into developing a strong root system and healthy foliage.

Otherwise, standard pepper maintenance applies. Remove any yellowing or dead leaves. As the end of the season approaches (mid- October), you can prune off any new flowers that won't have time to mature before the first frost. This will encourage the plant to focus its energy on ripening the existing peppers.

You can expect to start harvesting your Anaheim peppers from mid July through early September, about 75 days after transplanting. The peppers are ready to harvest when they are 6-8 inches long and green. At this stage, they have a mild flavor. If you prefer a bit more heat, wait until they turn red.

To harvest, use pruning shears or a sharp knife to cut the peppers from the plant, leaving a short stem attached. Avoid pulling the peppers off, as this can damage the plant. Anaheim peppers are continuous producers, so keep harvesting regularly to encourage more fruit to set.

As the first frost approaches (mid- October), harvest any remaining peppers, even if they are still green. They will ripen indoors if you place them in a paper bag with an apple or banana.

Here are the top 3 problems you might encounter with Anaheim peppers in the Great Plains:

Blossom End Rot

• What it looks like: Sunken, dark brown or black leathery patch on the bottom of the fruit.
• What causes it: Calcium deficiency caused by inconsistent watering. Our variable rainfall patterns (drought followed by heavy rain) make this a common issue.
• How to fix/prevent it: Water consistently, especially during dry spells. Mulch heavily to maintain even soil moisture. Avoid over-fertilizing with nitrogen. Remove affected fruit.

Sunscald

• What it looks like: White, papery patches on fruit exposed to direct sun.
• What causes it: Intense, direct sunlight on fruit, often after leaves are lost or pruned. Our strong Plains sun can quickly damage exposed peppers.
• How to fix/prevent it: Don't over-prune foliage. Use shade cloth during the hottest part of the day. If fruit is already exposed, drape a small piece of row cover over it.

Aphids

• What it looks like: Clusters of tiny insects (green, black, or white) on stems and leaf undersides. Sticky honeydew residue.
• What causes it: Rapid-reproducing sap-sucking insects. Populations explode in warm weather.
• How to fix/prevent it: Strong water spray knocks them off. Encourage ladybugs and lacewings. Insecticidal soap for heavy infestations. Avoid excess nitrogen fertilizer.

Great Plains Specific Challenges: The hot heat and variable rainfall of the Great Plains require vigilant monitoring of soil moisture. Consistent watering is crucial to prevent blossom end rot and keep your plants healthy. Wind protection is also important to prevent damage to the plants and fruit.

Companion planting can help your Anaheim peppers thrive. Tomatoes make great companions because they have similar growing requirements and can offer some shade during the hottest part of the day. Basil is another good choice, as it repels pests like aphids and whiteflies. Carrots and onions are also beneficial, as they attract beneficial insects that prey on pepper pests.

Avoid planting fennel near your Anaheim peppers, as it inhibits their growth. Brassicas (like cabbage, broccoli, and cauliflower) can also be problematic, as they compete for nutrients and attract pests that can harm your pepper plants.