Anaheim Pepper in Zone 7B — Pacific Northwest

Anaheim peppers are a fantastic choice for the Pacific Northwest garden. Their mild heat and versatility make them perfect for everything from stuffing to salsas, and the satisfaction of harvesting your own peppers after our long, overcast spring is truly rewarding. Plus, the cool nights we often have here seem to concentrate the flavors.

While we might not have the scorching summers of the Southwest, our 193-day growing season is long enough to get a great Anaheim pepper harvest. With a little planning and some attention to timing, you can definitely enjoy these peppers fresh from your garden.

Starting Anaheim pepper seeds indoors is the way to go in our Zone 7B PNW gardens. You'll want to get those seeds going from late February through mid March, roughly 8 weeks before you plan to transplant them outside. This gives them a good head start before our cool spring soil warms up.

Use seed trays with a good seed-starting mix, and make sure they have consistent warmth – a heat mat can be a lifesaver. Bright light is essential, so a grow light is really helpful, especially with our slow-starting spring weather. I like to bottom water my seedlings to encourage strong root growth; just set the tray in a shallow dish of water until the top of the soil is moist.

Transplant your Anaheim pepper seedlings outdoors from late April through late May, once the danger of frost has passed. Before planting them in the ground, be sure to harden them off. This means gradually exposing them to outdoor conditions for about a week, starting with just a few hours a day in a sheltered spot.

Plant them 18-24 inches apart in a sunny location. Keep an eye on the weather forecast; those late spring cold snaps can still happen, so be prepared to cover your young plants if needed.

Anaheim peppers need moderate watering, but it's crucial to get it right in our Pacific Northwest climate. While they are developed for dry climates and handle heat well, our dry-summer months mean you'll still need to pay attention. The key is consistency.

During the wet springs, you might not need to water much at all. Once the dry summer months arrive, check the soil moisture regularly using the "finger test." 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. Aim for about 1 inch of water per week, delivered at the base of the plant to avoid wetting the foliage.

Overwatering can be just as bad as underwatering, leading to root rot. Signs of underwatering include wilting leaves and dry, cracked soil. Overwatering can cause yellowing leaves and a soggy soil surface. A layer of mulch around the base of the plants helps retain moisture and regulate soil temperature.

While not always necessary, supporting your Anaheim pepper plants can be a good idea, especially when they're loaded with those long, heavy fruits. The upright growth habit means they can sometimes get a little top-heavy, and staking helps prevent branches from breaking.

A simple stake and some soft twine work well. Insert the stake into the ground near the plant at planting time, being careful not to damage the roots. As the plant grows, gently tie the main stem to the stake, providing support without constricting the plant.

Pruning Anaheim peppers is fairly straightforward. The main thing to remember is to pinch off any early flowers that appear before the plant is well-established. This encourages the plant to focus on vegetative growth, leading to a stronger, more productive plant later in the season.

Beyond that, standard pepper maintenance applies: remove any dead or yellowing leaves. As the end of the season approaches (late October in the PNW), you can pinch off any new flowers to encourage the plant to put its energy into ripening the existing peppers.

You can expect your first Anaheim pepper harvest from mid July through late August in our region. Anaheim peppers can be harvested green or red. If you pick them green when they are 6-8 inches long, they'll have a milder flavor. If you wait until they turn red, they'll be a bit hotter. The peppers should have thick walls and feel firm.

To harvest, use sharp pruners or scissors to cut the pepper from the plant, leaving a small piece of stem attached. Regular harvesting encourages continued production, so keep picking those peppers as they ripen. As the first frost approaches in late October, harvest any remaining peppers, even if they're still green. They will often ripen indoors if you bring them inside.

Here are a few 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 (blossom end) of the fruit, often affecting the first fruits of the season.
• What causes it: Calcium deficiency caused by inconsistent watering. Our wet springs followed by dry summers can create drought/flood cycles that disrupt calcium uptake.
• How to fix/prevent it: Water consistently! 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. 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. Even though our summers are mild, we can still get enough sun to cause this.
• 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).

Pacific Northwest Specific Challenges: Late blight, though more common on tomatoes, can sometimes affect peppers. Ensure good air circulation and consider blight-resistant varieties. The cool soil in spring can slow growth, so be patient and consider using row covers early on. While our summers are mild, sunscald can still be an issue, so monitor your plants and provide shade if needed. Slugs are always a concern in our wet climate, so use your preferred slug control methods.

Companion planting can really benefit your Anaheim peppers here in the Pacific Northwest. Tomatoes make great companions because they share similar growing requirements and can provide some shade. Basil is another excellent choice; it repels pests like aphids and whiteflies, and is said to improve the flavor of peppers.

Carrots and onions are also good companions. Carrots loosen the soil, improving drainage, while onions deter pests with their strong scent. Avoid planting fennel near your peppers, as it inhibits their growth. Brassicas like cabbage and broccoli can also be problematic, as they compete for nutrients and attract pests that can also affect your peppers.