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Bell Pepper 'Big Bertha'

Capsicum annuum 'Big Bertha'

A prize-winning hybrid that produces enormous bell peppers up to 7 inches long and 4 inches wide, often weighing over a pound each. This reliable variety delivers exceptional yields of thick-walled, sweet peppers that are perfect for stuffing or fresh eating. Big Bertha has been a garden favorite for decades thanks to its impressive size and excellent disease resistance.

Harvest

72-75d

Days to harvest

📅

Sun

Full sun

☀️

Zones

4–11

USDA hardiness

🗺️

Height

1-3 feet

📏

Planting Timeline

Zone:

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Start Indoors

Transplant

Harvest

Start Indoors

Transplant

Harvest

Showing dates for Bell Pepper 'Big Bertha' in USDA Zone 7

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Zone Map

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Bell Pepper 'Big Bertha' · Zones 4–11

What grows well in Zone 7? →

Growing Details

Difficulty

Easy

Spacing18-24 inches

SoilWell-drained, fertile loam rich in organic matter

pH6.0-6.8

Water1-1.5 inches per week, consistent moisture

SeasonWarm season

FlavorSweet, crisp, and mild with no heat

ColorGreen maturing to bright red

Size6-7 inches long, 4 inches wide, up to 1 pound

Zone-by-Zone Planting Calendar

Zone	Indoor Start	Transplant	Direct Sow	Harvest
Zone 3	April – April	June – July	—	August – October
Zone 4	March – April	June – June	—	August – October
Zone 5	March – March	May – June	—	August – October
Zone 6	March – March	May – June	—	July – September
Zone 7	February – March	April – May	—	July – September
Zone 8	February – February	April – May	—	June – August
Zone 9	January – January	March – April	—	May – July
Zone 10	January – January	February – March	—	May – July
Zone 1	May – May	July – August	—	September – August
Zone 2	April – May	June – July	—	September – September
Zone 11	January – January	January – February	—	April – June
Zone 12	January – January	January – February	—	April – June
Zone 13	January – January	January – February	—	April – June

Complete Growing Guide

Big Bertha's 72-75 day maturity is relatively quick for such a large-fruited variety, so start seeds indoors 8-10 weeks before your last frost to maximize the growing season and allow sufficient time for those massive peppers to develop fully. This cultivar thrives in warm soil (70-85°F) and benefits from consistent moisture and rich, well-draining soil amended with compost, since the enormous fruit load demands substantial nutrition. While Big Bertha boasts solid disease resistance, its dense foliage can trap moisture and invite fungal issues like powdery mildew in humid climates—ensure good air circulation by pruning lower branches. The heavy peppers require sturdy caging or staking to prevent branch breakage under their own weight, a practical necessity often overlooked by first-time growers. Avoid nitrogen-heavy fertilizers once flowering begins, as excess vegetative growth will delay fruit set.

Light: Full sun (6 or more hours of direct sunlight a day). Soil: Clay, High Organic Matter, Loam (Silt), Sand. Soil pH: Acid (<6.0), Alkaline (>8.0), Neutral (6.0-8.0). Drainage: Good Drainage. Height: 1 ft. 0 in. - 3 ft. 8 in.. Spread: 0 ft. 6 in. - 1 ft. 0 in.. Spacing: 12 inches-3 feet. Growth rate: Medium. Maintenance: Low. Propagation: Seed. Regions: Coastal, Mountains, Piedmont.

Harvesting

Harvest Big Bertha peppers when they reach their full 7-inch length and display a deep red, yellow, or orange color for maximum sweetness, though they are edible at the mature green stage. The thick walls should feel firm and glossy to the touch. Practice continuous harvesting by picking peppers regularly throughout the season to encourage the plant to produce more fruit rather than waiting for all peppers to ripen simultaneously. For optimal yields, remove peppers with pruning shears rather than pulling by hand to avoid damaging the branches, and prioritize harvesting mature peppers first so the plant directs energy toward developing remaining fruit.

Fruits are a non-pulpy berry and vary considerably across cultivars. Some are long, thin, bright red, and spicy; others are thick, large, and sweet-tasting; others still are small and in ornamental shapes and colors, grown as decoration.

Color: Black, Gold/Yellow, Green, Orange, Red/Burgundy. Type: Berry. Length: 1-3 inches. Width: < 1 inch.

Garden value: Edible, Good Dried, Showy

Harvest time: Summer

Edibility: Fruits edible, but spiciness is unpredictable in intensity.

Storage & Preservation

Store freshly harvested Big Bertha peppers in a perforated plastic bag in the refrigerator's crisper drawer, maintaining temperatures between 45–50°F with 90–95% humidity for optimal longevity. Under these conditions, expect a fresh shelf life of 2–3 weeks before quality declines.

For longer preservation, freezing works well: dice or slice the peppers, spread them on a baking sheet to freeze individually, then transfer to freezer bags for up to eight months. Roasting and freezing intensifies their natural sweetness. Canning whole or in strips requires a pressure canner due to their low acidity. Drying is also viable—slice lengthwise and dry at 135°F until leathery, yielding concentrated flavor for winter cooking.

Their thick walls make Big Bertha particularly suitable for roasting and freezing whole before peeling; the charred skin slips away cleanly, and they retain excellent texture when thawed for stuffed pepper recipes.

History & Origin

Bell Pepper 'Big Bertha' emerged as a hybrid cultivar during the late 20th century, though detailed documentation of its specific breeder and introduction year remains limited in readily available horticultural records. The variety represents the broader trend of commercial pepper breeding programs that focused on developing larger-fruited, high-yielding bell pepper types suited to both home gardeners and commercial producers. Big Bertha likely descends from earlier large-fruited pepper breeding lines developed through conventional hybridization techniques, capitalizing on desirable traits from multiple Capsicum annuum germplasm sources. Its rapid adoption as a garden favorite suggests successful marketing and distribution through major American seed companies, cementing its position as a reliable standard in home vegetable cultivation.

Origin: Tropical North and South America

Advantages

+Produces enormous peppers over a pound each, ideal for stuffing.
+Prize-winning hybrid with exceptional yields of thick-walled sweet peppers.
+Reliable variety with excellent disease resistance and proven garden performance.
+Easy to grow with mild, crisp flavor perfect for fresh eating.
+Matures in just 72-75 days, delivering results relatively quickly.

Considerations

-Susceptible to multiple diseases including bacterial spot and anthracnose.
-Vulnerable to blossom end rot, requiring consistent calcium and watering.
-Large fruit size demands substantial plant support and sturdy stakes.
-Attractive to multiple pests including aphids, spider mites, and hornworms.

Companion Plants

Basil and French marigolds (Tagetes patula) are the two worth planting closest. Basil may interfere with aphid and whitefly host-finding through volatile compounds — the research is genuinely mixed on how much it helps, but it doesn't compete hard for water or nutrients at 18-inch spacing, so the risk is zero. French marigolds are a different story: their roots release thiophenes, compounds with documented suppressive effects on root-knot nematodes (Meloidogyne spp.), which can be a real problem in sandy soils. Keep fennel out of the picture entirely — it's allelopathic and stunts most vegetables in its vicinity, and peppers are not an exception. Brassicas pull calcium and sulfur aggressively and can carry shared diseases into a nightshade bed, so they belong in their own rotation block.

Plant Together

Basil

Repels aphids, spider mites, and thrips while potentially improving pepper flavor

Tomatoes

Share similar growing conditions and can help deter pests when planted together

Oregano

Repels aphids and provides ground cover to retain soil moisture

Marigolds

Deter nematodes, aphids, and whiteflies with their strong scent

Carrots

Help break up soil and don't compete for nutrients or space

Onions

Repel aphids, spider mites, and other pests that attack peppers

Parsley

Attracts beneficial insects like hoverflies that prey on pepper pests

Nasturtiums

Act as trap crop for aphids and cucumber beetles

Keep Apart

Fennel

Releases allelopathic compounds that inhibit pepper growth and development

Brassicas

Compete heavily for nutrients and can stunt pepper growth

Black Walnut

Produces juglone toxin that is harmful to peppers and most nightshades

Nutrition Facts

Protein

0.715g(1%)

Fiber

0.942g(3%)

Carbs

4.78g(2%)

Fat

0.106g(0%)

Vitamin C

99.5mg(111%)

Iron

0.186mg(1%)

Calcium

7.5mg(1%)

Potassium

163mg(3%)

Per 100g serving. % Daily Value based on 2,000 calorie diet. Source: USDA FoodData Central (FDC #2258588)

Pests & Disease Resistance

Resistance

Good resistance to tobacco mosaic virus and bacterial leaf spot

Common Pests

Aphids, spider mites, pepper hornworm, cutworms

Diseases

Bacterial spot, anthracnose, blossom end rot, verticillium wilt

Troubleshooting Bell Pepper 'Big Bertha'

What you'll see, why it happens, and what to do about it.

Sunken, leathery black or brown patch on the bottom — or side — of developing fruit

Likely Causes

Blossom end rot — localized calcium deficiency in the developing fruit, as NC State Extension describes
Inconsistent watering or drought stress blocking calcium uptake
High ammonium-nitrogen fertilizer levels interfering with calcium availability

What to Do

1.Water consistently — 1 to 1.5 inches per week — and mulch heavily before dry spells hit, ideally by the time plants are blooming
2.Get a soil test before adding calcium amendments; if pH is already 6.0–6.8, calcium is likely present but uptake is the problem, not supply
3.Back off on high-nitrogen synthetic fertilizers, especially ammonium-based ones, mid-season

Small, water-soaked spots on leaves and fruit that darken and develop raised or scabby lesions

Likely Causes

Bacterial spot (Xanthomonas campestris pv. vesicatoria) — spreads fast in warm, wet conditions
Overhead irrigation or rain splash moving bacteria from soil to foliage

What to Do

1.Switch to drip irrigation or soaker hoses to keep foliage dry
2.Apply a copper-based bactericide at first sign of symptoms; repeat every 7–10 days during wet stretches
3.Rotate peppers and other nightshades — tomatoes, eggplant, potatoes — out of the bed for at least 2 seasons; NC State Extension specifically flags the whole family for rotation

Colonies of small soft-bodied insects clustered on new growth, leaves curling downward, sticky residue on foliage

Likely Causes

Aphid infestation — multiple species attack peppers; they concentrate on leaf undersides and growing tips
Absence of natural predators, often because a nearby broad-spectrum spray wiped them out earlier in the season

What to Do

1.Knock aphids off with a firm spray of water in the morning so foliage dries before evening
2.Apply insecticidal soap or neem oil directly to colonies, covering leaf undersides; repeat every 5–7 days
3.Plant nasturtiums (Tropaeolum majus) at the bed edges — they draw in aphid predators like parasitic wasps and lacewings without competing with the peppers for root space

Frequently Asked Questions

How long does Big Bertha pepper take to grow?▼

Big Bertha peppers take 72-75 days from transplant to harvest, plus 8-10 weeks for indoor seed starting. From seed to harvest, expect approximately 18-20 weeks total. In northern climates, start seeds indoors in February for summer harvest, while southern gardeners can start in March.

Can you grow Big Bertha peppers in containers?▼

Yes, Big Bertha grows well in containers, but use large pots (minimum 5-gallon capacity) to support the substantial root system and heavy fruit load. Provide sturdy staking and consistent watering, as container plants dry out faster. Choose a sunny location with 6-8 hours of direct sunlight daily.

Is Big Bertha pepper good for beginners?▼

Big Bertha is considered easy to grow once established, but the long indoor starting period can challenge beginners. If you can successfully start seeds indoors or purchase transplants, the variety is forgiving and produces reliably. Its disease resistance makes it more beginner-friendly than many pepper varieties.

What does Big Bertha pepper taste like?▼

Big Bertha peppers have a sweet, mild flavor with no heat whatsoever. They're crisp when fresh with thick, juicy walls. The flavor is classic bell pepper but more concentrated due to the thick flesh. When cooked, they become tender and slightly sweeter, making them ideal for stuffing and roasting.

When should I plant Big Bertha pepper seeds?▼

Start Big Bertha seeds indoors 8-10 weeks before your last expected frost date. For most areas, this means starting seeds in February or March. Transplant outdoors only after soil temperature reaches 65°F and nighttime temperatures consistently stay above 50°F.

How big do Big Bertha peppers actually get?▼

Big Bertha peppers typically reach 6-7 inches long and 3-4 inches wide, often weighing over one pound each when fully mature. Under ideal growing conditions with consistent water and fertility, some fruits can reach 8 inches long. The thick walls (¼ inch) contribute significantly to their impressive weight.