Several Manganji Sweet Peppers on a white background.
Manganji Sweet Peppers in a wooden box, others scattered on top of Japanese decor on a white background.
Manganji Sweet Pepper roasted on a plate with Japanese decor on a white background.
Manganji Sweet Peppers, some in a wooden box others scattered on top of Japanese decor on a white background.
Manganji Sweet Peppers with roasted and some fresh peppers next to a bowl of soy sauce on a wooden background.
Several Manganji Sweet Peppers on a white background.
Manganji Sweet Peppers in a wooden box, others scattered on top of Japanese decor on a white background.
Manganji Sweet Pepper roasted on a plate with Japanese decor on a white background.
Manganji Sweet Peppers, some in a wooden box others scattered on top of Japanese decor on a white background.
Manganji Sweet Peppers with roasted and some fresh peppers next to a bowl of soy sauce on a wooden background.

Sweet Pepper Seeds,
Manganji

4.215 Reviews#PP201 · 10 seeds
Price
Regular price $3.25
Regular price $0.00 Sale price $3.25
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Description

(Capsicum annuum). The famous and flavorsome sweet chili of historic Japan. Sure to be a new sensation with chefs and foodies alike. Manganji is recognized as a traditional cultural vegetable in Kyoto, Japan, where it is celebrated as the King of Japanese Chili peppers. Manganji is among the world’s best-tasting peppers. These are generally sweet, but often take on a bit of heat, perfect for mild salsas, grilling, roasting, and more!

Plant Details

Botanical Name
Capsicum annuum
Life Cycle
Perennial in frost free zones; grown as an annual elsewhere.
Sun Requirement
Full sun
Days to Germinate
7–14
Days to Maturity
80–90
Planting Depth
¼ in.
Plant Spacing
18–24 in.
Ideal Temperature
70–85°F
Frost Hardy
No

Growing Guide

When to Grow

Start seeds indoors 8–10 weeks before your last expected frost date. Transplant seedlings outdoors once the soil has warmed and all danger of frost has passed. If you’re not sure how to find your first and last frost dates, consult our blog post 'Our Experts Answer Questions, Share Resources.'

How to Sow and Plant

Sow seeds 1/4 inch deep in seed-starting trays filled with moist, sterile mix. Keep soil temperatures between 75–85°F for best germination. Use a heat mat if needed. Once seedlings develop two sets of true leaves, transplant to larger pots and provide bright light until hardening off.

How to Grow

Transplant seedlings into full sun and rich, compost-enhanced soil. Space plants 18–24 inches apart. Water deeply and consistently, especially during flowering and fruit development. Use mulch to suppress weeds and regulate soil temperature. Support plants as needed when loaded with fruit.

How to Save Seeds

  • Choose fully ripe, deep red fruits from healthy, true-to-type plants.
  • Cut open the pepper and remove seeds.
  • Spread seeds on a screen or paper towel in a warm, dry place out of direct sunlight.
  • Stir daily to ensure even drying.
  • Once completely dry, store in an airtight container in a cool, dark place.
  • Label with variety and year. Seeds remain viable for up to 3-5 years.

FAQ

Are Manganji peppers sweet or spicy?

Manganji peppers are generally sweet and mild, though individual fruits often take on a bit of heat, especially under heat or water stress. They're prized in Japanese cuisine for their savory flavor and tender texture, especially when roasted or pan-fried.

Can Manganji peppers be harvested when red?

Yes, although they’re traditionally harvested green, Manganji peppers can be allowed to ripen to red on the plant. This enhances sweetness and adds visual appeal in cooked dishes.

Can I grow Manganji peppers in containers?

Yes, Manganji peppers do well in containers of 5 gallons or larger. Ensure proper drainage, provide full sun, and fertilize monthly for healthy growth and continuous fruit production.

Browse our full range of sweet pepper seeds.

Customer reviews

4.2 / 5 15 Reviews

What gardeners are saying

  • Loads of peppers: Plants are loaded; growers pick every other day by the bagful.

  • Made for the grill: Thin walls char nicely; grilled with soy sauce or chicken.

  • Big plants, stake them: Reaches 4 ft and so heavy the branches snap without support.

  • Slow to turn red: Fruit takes a while to ripen red; many pick it green.

  • Heads up: Many find real heat, not sweetness; some fruit hit cayenne level.

More to grow!

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