Shishito Pepper Seeds

Shishito pepper seeds grow into bushy plants reaching 25–30 in, bearing green fruit about 3-4 in long. Heat category: Sweet. It is especially suited to blistering, grilling, sautéing, tempura, appetizers, frequent green harvest, and productive containers. Maturity is 60-69 Days.

Minimum seeds per packet: 25 seeds.

About Shishito

Shishito is a mild chile pepper grown as Capsicum annuum L. Plants have a bushy habit and reach 25–30 in; support is listed as stake. The principal mature or market color is Green, with fruit described as about 3-4 in long. Reproductive classification: Open-Pollinated (OP). Maturity: 60-69 Days. Names associated with this variety include Shishito Pepper, Pepper Seeds - Hot - Shishito.

• Scientific name:Capsicum annuum L.
• Life cycle:Annual
• Planting season:Spring
• Growth habit:Bush
• Plant height:25–30 in
• Sunlight:Full sun
• Seed depth:1/4 in
• Germination:7–14 Days at 75–90 °F
• Spacing:18 in between plants; 24 in between rows
• Soil:Loamy; pH 6.0–6.5
• Water:Moderate
• Support:Stake
• Reproductive type:Open-Pollinated (OP)
• Fruit:Green; About 3-4 in long
• Heat:Sweet; 100-1,000 SHU

History and seedkeeping context

Shishito is a Japanese pepper type valued for small, thin-walled fruit harvested green and cooked quickly. The institutional sources used here support its Japanese culinary identity, fruit form, plant size, harvest stage, and variable pungency, but they do not establish one named breeder or a single historical release year. The page therefore preserves the crop's cultural and culinary context without inventing a pedigree.

The thin skin is the practical trait behind fast blistering, sautéing, grilling, and tempura use. Peer-reviewed studies show that Shishito pungency is genuinely variable. One study found greater capsaicinoid fluctuation in fruit with fewer seeds, and another identified at least two major genetic loci involved in reduced pungency.

Those findings support saying mild with occasional hot fruit, but they do not support a guaranteed fixed ratio such as one hot pepper in every ten. The available sources do not establish a named person’s tribal identity.

Fruit, flavor, and kitchen use

Harvest fruit bright green, thin-walled, and tender. Blister whole peppers quickly in a hot pan or on a grill, sauté them in oil, use them in tempura, or serve them as a small-plate appetizer. Frequent picking supports continued flowering and production. Fruit left on the plant eventually ripens red and can be used at that stage, but green is the classic culinary harvest. Most fruit is mild, yet individual pods can be noticeably hotter. Shishito is especially useful for blistering, grilling, sautéing, tempura, appetizers, frequent green harvest, and productive containers. Flavor and eating quality are described as thin-walled and mild at green harvest, with occasional fruit that develops noticeable heat. Heat classification: Sweet; listed range: 100-1,000 SHU. Pungency can shift with genetics, weather, water stress, and ripeness.

How to grow Shishito

Start Shishito indoors about 8 to 10 weeks before the last expected frost. Sow 1/4 in deep in a warm, evenly moist seed-starting mix; expect 7–14 Days near 75–90 °F. Provide strong light as soon as seedlings emerge, pot up before roots become crowded, and harden plants gradually before transplanting after nights are reliably warm.

Plant in full sun with loamy soil near pH 6.0–6.5. Space plants 18 in apart and rows 24 in apart. Maintain moderate moisture, mulch after the soil warms, and avoid excessive nitrogen. Install stake early where the bushy plant or fruit load warrants it. Mature height is 25–30 in.

Season care

• Warmth matters most during germination; keep Shishito seed warm without leaving the medium saturated. • Harden seedlings gradually and wait for warm nights before transplanting, because cold soil and wind can stall peppers for weeks. • Install stake before branches carry a heavy crop, and keep moisture even while fruit is setting. • Harvest at the color stage suited to the recipe, but leave fruit fully mature on selected plants when saving seed. • Use 60-69 Days as a planning range rather than a guaranteed calendar date; weather and transplant stress can shift first harvest.

Harvest and maturity

60-69 Days from transplant to first representative harvest; the same value is used in every description. Peppers can often be used at an immature green or transitional color, but fully ripe color is required for mature seed.

Saving seed

Peppers are largely self-pollinating but insect movement can produce crosses. To save Shishito true to type, grow several healthy representative plants, isolate them from compatible pepper varieties or use blossom bags or cages, and remove clear off-types before flowering. Allow selected fruit to reach full biological color, handle hot fruit with gloves, remove the seed, dry it in a thin labeled layer until fully hard and dry, then store it cool, dark, and dry. Keep the harvest year, source, isolation method, and selection notes with the lot.

Common questions