Anaheim Pepper in Zone 6B — Pacific Northwest

Anaheim peppers bring a mild, slightly sweet heat that's perfect for salsas, roasting, or stuffing – and they actually thrive in our mild summers and cool nights here in the PNW. Their thick walls hold up well whether you're grilling them or adding them to your favorite chili recipe. There's a real satisfaction in harvesting a pepper that you nurtured from seed right here in your own garden.

While we might not have the blazing heat of the Southwest, don't let that deter you. With a little planning and attention to timing, you can absolutely grow Anaheim peppers successfully in our 162-day growing season. Starting them indoors gives them the head start they need to produce a good harvest before our first frost.

Starting Anaheim pepper seeds indoors in mid-March through early April gives them plenty of time to mature before transplanting. You'll want to sow seeds in seed trays or small pots filled with a good seed-starting mix. Keep the soil consistently moist and provide warmth, ideally around 75-80°F, using a heat mat if needed.

Once the seedlings emerge, move them under grow lights, or place them in a very sunny window that gets at least 6 hours of direct light per day. Water from the bottom to encourage strong root growth and prevent damping-off. Remember, spring can be slow to warm here, so don't rush things.

Transplant your Anaheim pepper seedlings outdoors in mid-May through mid-June, once the danger of frost has passed and the soil has warmed up. Before planting, harden off your seedlings by gradually exposing them to outdoor conditions for about a week. This helps them adjust to the sun and wind.

Plant them 18-24 inches apart in a sunny spot with well-drained soil. Keep an eye on the weather forecast; those overcast spring days can still bring chilly nights, so be prepared to cover your young plants if a late frost threatens.

Anaheim peppers need moderate watering, but they definitely don't want to sit in soggy soil – something easily done with our wet springs here. During our dry summer months, aim to give them about 1 inch of water per week, either from rainfall or irrigation.

Use the "finger test" – stick your finger about 2 inches deep into the soil. If it feels dry, it's time to water. Water at the base of the plant to avoid wetting the foliage, which can encourage fungal diseases in our sometimes humid conditions.

Signs of underwatering include wilting leaves and stunted growth. Overwatering can lead to yellowing leaves and root rot. A layer of mulch, like straw or wood chips, will help retain moisture and keep the soil temperature even throughout the season.

Anaheim pepper plants can get quite tall and laden with fruit, so providing support is a good idea, especially as the season progresses. Staking is probably the easiest method. You can simply drive a sturdy stake into the ground near each plant at planting time.

As the plant grows, gently tie the main stem to the stake with soft twine or plant ties. Tomato cages also work well, providing all-around support for the branches as they fill out.

Pinching off the early flowers on your Anaheim pepper plant can encourage it to focus its energy on vegetative growth, leading to a stronger plant and a bigger harvest later in the season. This is especially helpful given our shorter growing season.

Otherwise, standard pepper maintenance applies – remove any yellowing or dead leaves to improve air circulation. As the first frost approaches in early October, you can remove any remaining small flowers, as they likely won't have time to mature into peppers.

You can expect your first Anaheim pepper harvest in late July through mid-September, depending on when you transplanted them. Anaheim peppers can be harvested green at 6-8 inches long for a milder flavor, or you can wait until they turn red for a bit more heat. They should have thick walls and feel firm.

To harvest, use pruning shears or a sharp knife to cut the pepper from the plant, leaving a short stem attached. Regular harvesting encourages the plant to continue producing more peppers.

As the first frost approaches in early October, harvest any remaining mature peppers, even if they haven't fully ripened. Green peppers will ripen indoors if stored in a paper bag with an apple or banana.

Here are some common problems you might encounter with Anaheim peppers in the Pacific Northwest:

Blossom End Rot

• What it looks like: A sunken, dark brown or black leathery patch on the bottom of the pepper.
• What causes it: Inconsistent watering leads to calcium deficiency. Common during our wet springs followed by dry summer spells.
• How to fix/prevent it: Water consistently, especially during dry periods. Mulch heavily. Remove affected fruit.

Sunscald

• What it looks like: White, papery patches on the fruit, usually on the side facing the sun.
• What causes it: Intense, direct sunlight, often after pruning or leaf loss. Even our mild summers can cause sunscald if the fruit is suddenly exposed.
• How to fix/prevent it: Avoid over-pruning. Use shade cloth during periods of intense sun.

Aphids

• What it looks like: Clusters of tiny green, black, or white insects on stems and leaf undersides. Sticky honeydew and curled leaves.
• What causes it: Rapid reproduction in warm weather.
• How to fix/prevent it: Strong water spray. Encourage natural predators like ladybugs. Insecticidal soap or neem oil.

Pacific Northwest Specific Challenges: Our mild summers and dry-summer humidity can sometimes make it tricky to get Anaheim peppers to ripen fully. Late blight can also be a concern, especially if you grow tomatoes nearby. Good air circulation and avoiding overhead watering can help prevent fungal diseases.

Companion planting can be a great way to boost the health and productivity of your Anaheim peppers here in the PNW.

• Good companions:
• Tomatoes: They enjoy similar growing conditions and can offer mutual support.
• Basil: Repels pests like aphids and whiteflies, and is said to improve pepper flavor.
• Carrots: Their roots loosen the soil and they don't compete for the same nutrients.
• Onions: Repel many common pepper pests.
• Bad companions:
• Fennel: Inhibits the growth of many plants, including peppers.
• Brassicas (cabbage, broccoli, kale): They can stunt pepper growth and attract pests that also affect peppers.