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Pepper · Easy to Moderate

How to Grow Jalapeño 'Jalapeño M'

Capsicum annuum 'Jalapeño M'

Jalapeño 'Jalapeño M' is a popular warm-season pepper variety prized for its versatile heat level and abundant fruit production. Gardeners cultivate this plant to enjoy fresh peppers in salsas, salads, and cooked dishes throughout the summer growing season.

☀SunFull sun (6+ hours)
💧Water1-2 inches per week, consistent moisture
📅Harvest70-80 days
🗺Zones4–11
📏Height1-3 feet
Jalapeño 'Jalapeño M'📷 Wikipedia: Capsicum annuum

Starting Jalapeño 'Jalapeño M': indoors or direct sow?

🌾 Sow directly in the garden — Jalapeño 'Jalapeño M' is not usually started indoors.

Since this is a warm-season crop sensitive to cold, do not start indoors; instead, wait until soil temperatures are consistently warm before planting directly outside.

Find your last frost date by ZIP code →

Soil, care & harvest

Prepare your soil by amending it with organic matter to achieve a pH between 6.0 and 7.0. As a warm-season crop, you must start seeds indoors several weeks before the last frost date or sow directly outdoors only after all danger of frost has passed and the soil is thoroughly warm. Press seeds into the soil at a depth of about one-quarter inch to ensure successful germination within 10 to 25 days.

Space your plants 18 to 24 inches apart in full sun, ensuring they receive at least six hours of light daily. Provide consistent moisture by watering one to two inches per week, keeping the soil evenly moist but not waterlogged. Apply a layer of mulch around the base to retain moisture and suppress weeds, while feeding regularly with a balanced fertilizer during the active growing phase.

Monitor your plants for aphids, thrips, pepper maggots, and hornworms, treating infestations promptly. Watch for bacterial spot, phytophthora blight, and verticillium wilt, practicing crop rotation to prevent disease buildup. Harvest peppers approximately 70 to 80 days after transplanting when they reach your desired size and color.

When to Plant Jalapeño 'Jalapeño M'

Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.

ZoneStart IndoorsDirect SowHarvest
Zone 1 May — October – August
Zone 2 April – May — September
Zone 3 April — September – October
Zone 4 March – April — August – October
Zone 5 March — August – October
Zone 6 March — August – October
Zone 7 February – March — July – September
Zone 8 February — July – September
Zone 9 January — June – August
Zone 10 January — May – July
Zone 11 January — April – June
Zone 12 January — April – June
Zone 13 January — April – June

Companion Plants for Jalapeño 'Jalapeño M'

✓ Good companions

Basil

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

Carrots

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

Marigolds

Repel nematodes, aphids, and whiteflies while attracting beneficial insects

Nasturtiums

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

Onions

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

Oregano

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

Parsley

Attracts beneficial insects like hoverflies that prey on pepper pests

Tomatoes

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

✗ Keep away from

Black Walnut Trees

Release juglone toxin that inhibits pepper growth and can cause wilting

Brassicas

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

Fennel

Produces allelopathic compounds that stunt pepper growth and development

Nutrition Facts

Per 100g serving (USDA FoodData Central)

29.0kcal
0.91gProtein
2.80gFiber
119.00mgVitamin C
0.25mgIron
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