Anaheim Pepper in Zone 6B — Great Plains

Anaheim peppers are a fantastic choice for Plains gardeners looking for a mild heat with great flavor. They're incredibly versatile in the kitchen, whether you're roasting them, stuffing them, or adding them to your favorite chili recipe. The satisfaction of harvesting a basket full of peppers you grew yourself, even with our sometimes challenging climate, is hard to beat.

Our Great Plains weather, with its extreme temperature swings and occasional hail, can be tough on plants. But with a little planning and attention to timing, you can successfully grow Anaheim peppers here. Our 198-day growing season gives us enough time to get a good harvest.

Starting Anaheim peppers indoors is the way to go in our region, giving them a head start before the weather fully warms up. You'll want to sow your seeds indoors from mid-February through mid-March, roughly eight weeks before you plan to transplant them outside. This timing allows them to develop into strong seedlings before facing our variable spring weather.

Use seed trays or small pots filled with a good seed-starting mix. Keep the soil consistently moist, using bottom watering to avoid disturbing the delicate seedlings. Place the trays in a warm spot (around 75-80°F) and provide plenty of light, either from a sunny window or a grow light.

Transplanting your Anaheim pepper seedlings outdoors should happen between late April and late May, after the danger of frost has passed. Before transplanting, harden off your seedlings by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the sun and wind.

When transplanting, space the plants 18-24 inches apart in a sunny spot with well-drained soil. Keep an eye on the weather forecast – a late frost or unexpected cold snap can still happen, so be prepared to cover your plants if needed.

Watering is crucial for Anaheim peppers, especially in our Plains climate where we often deal with hot, dry spells. While they're somewhat heat-tolerant, consistent moisture is key to preventing blossom end rot and ensuring a good harvest. During the peak of summer, with those typical 93°F days and variable rainfall, you'll likely need to water deeply about 1-2 times per week, providing about 1-2 inches of water each time.

The "finger test" is your best friend: stick your finger about 2 inches deep 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 the risk of fungal diseases, which can be exacerbated by our occasional 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 the base of the plants helps retain moisture and regulate soil temperature, which is particularly useful in our region's variable conditions.

Anaheim pepper plants can get quite tall and produce a lot of long, heavy peppers, so providing some support is a good idea, though not always essential. Staking is usually the easiest option.

Install stakes at planting time, placing them a few inches away from the plant's base. As the plant grows, gently tie the stems to the stakes using soft twine or plant ties. This will help prevent the branches from breaking under the weight of the peppers, especially during our windy days. Wind protection is essential in the Plains, so consider planting in a sheltered location if possible.

Pruning Anaheim peppers is relatively simple. Pinch off any early flowers that appear before the plant is well-established. This encourages the plant to focus its energy on vegetative growth, resulting in a stronger plant and a larger yield later in the season.

Throughout the season, remove any yellowing or dead leaves to improve air circulation and prevent disease. As the first frost approaches in late October, you can remove any remaining small peppers to encourage the plant to put its energy into ripening the larger ones.

You can expect your first harvest of Anaheim peppers from early July through late August, about 75 days after transplanting. You can harvest them green when they're about 6-8 inches long for a milder flavor, or wait until they turn red for more heat. The peppers should have thick walls and a firm texture.

To harvest, use pruning shears or a sharp knife to cut the stem just above the pepper. Avoid pulling the peppers off, as this can damage the plant. Regular harvesting encourages continued production, so keep an eye on your plants and pick the peppers as they ripen.

As the first frost approaches in late October, harvest all remaining peppers, even the green ones. Green Anaheim peppers will ripen indoors if stored in a cool, dry place.

Here are three common problems you might encounter with Anaheim peppers in the Great Plains:

Blossom End Rot

• What it looks like: A sunken, dark brown or black leathery patch on the bottom (blossom end) of the fruit. It often affects the first fruits of the season.
• What causes it: Calcium deficiency caused by inconsistent watering. It's not a disease but a nutrient uptake problem triggered by drought/flood cycles, which are common in our variable climate.
• How to fix/prevent it: Water consistently – this is the single most effective fix. Mulch heavily to maintain even soil moisture. Don't over-fertilize with nitrogen. Calcium sprays can help marginally. Remove affected fruit.

Sunscald

• What it looks like: White, papery patches on fruit exposed to direct sun. Affected areas may blister and become susceptible to rot.
• What causes it: Intense, direct sunlight on fruit, usually after leaves are removed or lost to disease, suddenly exposing previously shaded fruit. Our intense sunshine can be particularly harsh.
• How to fix/prevent it: Don't over-prune foliage. Use shade cloth in extreme heat. Maintain healthy foliage to shade fruit naturally. If fruit is already exposed, drape a small piece of row cover over it.

Aphids

• What it looks like: Clusters of tiny soft-bodied insects (green, black, or white) on stems and leaf undersides. Sticky honeydew residue. Curled or distorted new growth.
• What causes it: Rapid-reproducing sap-sucking insects. Populations explode in warm weather. Ant colonies may farm them for honeydew.
• How to fix/prevent it: Strong water spray knocks them off. Encourage ladybugs and lacewings (natural predators). Insecticidal soap for heavy infestations. Neem oil works systemically. Avoid excess nitrogen fertilizer (it attracts them).

Great Plains Specific Challenges: The hot heat, low-to-moderate humidity, and variable rainfall in the Great Plains can exacerbate these problems. Consistent watering is crucial to prevent blossom end rot, and providing shade during the hottest part of the day can help prevent sunscald.

Companion planting can be a great way to improve the health and productivity of your Anaheim pepper plants. Tomatoes make excellent companions because they share similar growing requirements and can provide some shade. Basil is another good choice, as it repels pests like aphids and whiteflies.

Carrots and onions are also beneficial companions, as they help to deter soil-borne pests. Avoid planting fennel near your peppers, as it inhibits their growth. Brassicas like cabbage and broccoli can also attract pests that will attack your peppers.