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Jalapeño 'Jalapeño M'

Capsicum annuum 'Jalapeño M'

The classic jalapeño that defines medium heat for most home gardeners, delivering consistent 2,500-8,000 Scoville units. This reliable variety produces abundant harvests of thick-walled peppers perfect for fresh salsas, pickling, or smoking into chipotle peppers. A must-have variety that bridges the gap between sweet and truly hot peppers.

Harvest

70-80d

Days to harvest

📅

Sun

Blossom-End Rot of Tomato

☀️

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 Jalapeño 'Jalapeño M' in USDA Zone 7

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Zone Map

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Jalapeño 'Jalapeño M' · Zones 4–11

What grows well in Zone 7? →

Growing Details

Difficulty

Easy to Moderate

Spacing18-24 inches

SoilWell-drained, fertile soil with good organic content

pH6.0-7.0

Water1-2 inches per week, consistent moisture

SeasonWarm season

FlavorFresh, grassy heat with moderate spice level (2,500-8,000 Scoville)

ColorDark green ripening to red

Size2-3 inches long, 1 inch wide

Zone-by-Zone Planting Calendar

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

Complete Growing Guide

Light: Blossom-End Rot of Tomato, Pepper, and Watermelon. Soil: Clay, High Organic Matter, Loam (Silt), Sand. Soil pH: Acid (<6.0), Alkaline (>8.0), Neutral (6.0-8.0). Drainage: Good Drainage. Water: KAP-sih-kum AN-yoo-um. 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: 'Aurora', 'Basket of Fire', 'Black Pearl', 'Buena Mulata', 'Calico', 'California Wonder', 'Candelabra', Cerasiforme Group, 'Chilly Chili', Conioides Group, 'Early Jalapeno', Fasciculatum Group, Grossum Group, 'Hot Returns', Longum Group, 'Mad Hatter', 'Purple Flash', 'Sweet orange', 'Sweet Sunset'. Propagation: Seed. Regions: Coastal, Mountains, Piedmont.

Harvesting

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: 'Aurora', 'Basket of Fire', 'Black Pearl', 'Buena Mulata', 'Calico', 'California Wonder', 'Candelabra', Cerasiforme Group, 'Chilly Chili', Conioides Group, 'Early Jalapeno', Fasciculatum Group, Grossum Group, 'Hot Returns', Longum Group, 'Mad Hatter', 'Purple Flash', 'Sweet orange', 'Sweet Sunset'. Type: Berry. Length: 1-3 inches. Width: < 1 inch.

Garden value: Edible, Good Dried, Showy

Harvest time: Summer

Bloom time: Summer

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

Storage & Preservation

Fresh Jalapeño M peppers store best in the refrigerator crisper drawer for 2-3 weeks when kept in a perforated plastic bag to maintain humidity while preventing moisture buildup. Avoid washing before storage — clean only when ready to use. For short-term storage, leave peppers at room temperature for up to one week.

For longer preservation, freeze whole peppers on baking sheets before transferring to freezer bags — they'll maintain quality for 8-10 months but lose their crisp texture, making them perfect for cooked dishes. Pickle sliced jalapeños in vinegar brine for tangy additions to tacos and sandwiches. The thick walls of Jalapeño M make them ideal for smoking into chipotle peppers — smoke at 200°F until completely dried. Dehydrate sliced rings at 125°F for 8-12 hours to create shelf-stable spice flakes.

History & Origin

Origin: Tropical North and South America

Advantages

+Disease resistance: Deer, Drought, Heat
+Attracts: Songbirds
+Wildlife value: Birds are immune to the capsaicin in peppers and can safely eat the fruits with no ill effects. Therefore, these plants may attract birds. Host plant for Potato Tuber Moth.
+Edible: Fruits edible, but spiciness is unpredictable in intensity.

Companion Plants

Plant Together

Basil

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

Tomatoes

Share similar growing conditions and can be planted together to maximize garden space

Oregano

Deters pests like aphids and spider mites with its strong aromatic oils

Marigolds

Repel nematodes, aphids, and whiteflies while attracting beneficial insects

Carrots

Help break up soil for pepper roots and don't compete for nutrients

Onions

Deter aphids, spider mites, and other pests with their sulfur compounds

Parsley

Attracts beneficial insects like hoverflies that prey on pepper pests

Nasturtiums

Act as trap crops for aphids and cucumber beetles while attracting predatory insects

Keep Apart

Black Walnut Trees

Release juglone toxin that inhibits pepper growth and can cause wilting

Fennel

Produces allelopathic compounds that stunt pepper growth and development

Brassicas

Compete heavily for nutrients and may attract pests that also damage peppers

Nutrition Facts

Calories

29kcal(1%)

Protein

0.91g(2%)

Fiber

2.8g(10%)

Carbs

6.5g(2%)

Fat

0.37g(0%)

Vitamin C

119mg(132%)

Vitamin A

54mcg(6%)

Vitamin K

18.5mcg(15%)

Iron

0.25mg(1%)

Calcium

12mg(1%)

Potassium

248mg(5%)

Per 100g serving. % Daily Value based on 2,000 calorie diet. Source: USDA FoodData Central (FDC #168576)

Pests & Disease Resistance

Resistance

Moderate resistance to bacterial spot and tobacco mosaic virus

Common Pests

Aphids, thrips, pepper maggot, hornworms

Diseases

Bacterial spot, phytophthora blight, verticillium wilt

Frequently Asked Questions

How long does Jalapeño M take to grow from seed to harvest?▼

Jalapeño M requires 70-80 days from transplant to first harvest, plus 8-10 weeks for indoor seed starting. Total time from seed to harvest is approximately 18-22 weeks. In shorter growing seasons, start seeds indoors earlier or purchase transplants to ensure adequate time for fruit development before first frost.

Is Jalapeño M good for beginner gardeners?▼

Yes, Jalapeño M is excellent for beginners due to its forgiving nature and reliable production. It tolerates minor growing mistakes better than many pepper varieties and provides clear visual cues for harvest timing. The moderate disease resistance and consistent heat levels make it predictable for new gardeners learning pepper cultivation.

Can you grow Jalapeño M in containers?▼

Absolutely — Jalapeño M grows well in containers with minimum 5-gallon capacity and drainage holes. Choose containers at least 12 inches deep and wide. Container plants need more frequent watering and feeding than garden plants, and you'll need to stake them as fruits develop since container plants are less stable.

What does Jalapeño M taste like compared to store-bought jalapeños?▼

Fresh Jalapeño M offers brighter, grassier flavor than most store-bought peppers, with consistent 2,500-8,000 Scoville heat. The thick walls provide satisfying crunch and make them ideal for stuffing. Home-grown peppers typically have more complex flavor since they're harvested at peak ripeness rather than picked early for shipping.

When should I plant Jalapeño M seeds or transplants?▼

Start seeds indoors 8-10 weeks before your last frost date, typically late February to early March in most regions. Transplant outdoors only after soil temperatures reach 65°F consistently and nighttime temperatures stay above 55°F. In most areas, this means late May to early June transplanting.

How hot is Jalapeño M compared to other pepper varieties?▼

Jalapeño M rates 2,500-8,000 Scoville units, making it significantly milder than serranos (10,000-25,000) or cayennes (30,000-50,000), but much hotter than bell peppers (0 Scoville). It provides perfect medium heat for most home cooks — noticeable spice without overwhelming heat that masks flavor.