What Is a Scoville Heat Unit?

Habaneros may reach a scorching 350,000 Scoville units.

Fruits start green, then turn red, yellow, or orange at maturity.

long, pointy red and orange peppers growing on leafy pepper plant in garden

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Leave peppers on the plant for three extra weeks to fully ripen and turn red.

With a mild heat, they’re great for pickling and frying.

They’re also a beginner-friendly variety to grow, with only 65 days to harvest for green fruits.

Red Bell Pepper Plant

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These long, slightly curved fruits have a pronounced heat and a sweet, floral flavor when fresh.

Top-dress the soil with organic compost when plants begin to flower.

Harvest the first fruits when they reach a little over three inches long to encourage further growth.

banana peppers on wrought iron table top

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Their earthy flavor and sturdy walls make them excellent for stuffing and frying.

Descended from the ultra-hot Trinidad Scorpion, it has lots of flavor with little to no heat.

Fruits are enjoyable raw or cooked.

red and green carmen peppers with chalk sign in wooden bowl on market table

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Leave fruits for about three more weeks to harvest fully red peppers.

Enjoy fruits raw, roasted, or fried.

To dry your own, allow fruits to turn fully red before harvesting.

full frame of light green pepperoncini peppers on white background

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Once fruit sets, plants grow easily, with a long harvest period.

Plants may be more challenging to grow for the average gardener.

Allow this Caribbean pepper to turn fully red before harvesting.

Anaheim peppers in basket

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Compact plants grow round slightly flat fruits.

Harvest as soon as peppers turn fully red to encourage further fruit set.

Fry or roast ripe peppers, or use them to make salsa or hot sauce.

closeup of long, wrinkly dark green chilaca peppers on the plant

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Fruits grow abundantly in warm climates but may produce fewer peppers in colder climates.

Fruits also take longer to ripen fully.

They’re also sometimes called pimenta de bico or biquinho peppers.

A Closer Look at the Pimento, an Unsung Hero of the Pepper Kingdom

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Let these prolific, easy-to-grow fruits ripen to red or yellow before harvesting and pickling or frying.

Thanks to the plants' compact growth habit, they can grow easily in the ground or in containers.

While they’re prized for their looks, Medusa peppers are edible, with a sweet, mild flavor.

Poblano pepper

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Cultivars with larger fruits, like ‘Altiplano’, tend to have an earlier harvest.

Piquillo Pepper

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Piquillo peppers (Capsicum annuum) are Spanish heirloom peppers.

These peppers have a beak-like shape and are often used in antipasti and tapas.

closeup of yellow trinidad perfume peppers on plant outdoors. peppers have a folded, bonnet-shaped appearance.

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These peppers are quite hot, more than three times hotter than jalapenos.

Cayennes are often dried and ground into a powder to create cayenne pepper seasoning.

The heat levels of these peppers vary, so proceed with caution.

Cubanelle peppers

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They can be as hot as habaneros, but rocoto peppers are also sweet and fruity.

These small peppers are about one inch long but they pack a punch with a lot of heat.

Piri piri peppers are often used to make flavorful hot sauces.

piles of red and green hatch chile peppers in baskets at farmstand

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Bell peppers are the mildest pepper at 0 Scoville Heat Units.

Plant pepper seedsindoors in late winteror early spring, about six weeks before your region’s last frost date.

Seedlings can be planted outside in spring once night temperatures reach around 60F.

Guajillo peppers

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Plants mature in summer and can continue producing into early fall, depending on the climate and variety.

shishito pepper plant with long green pepper fruits and green leaves

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closeup of red and green bishop’s hat peppers on the plant. the fruits have a three-sided shape and pointy end.

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Fresh Cherry Peppers

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Jalapeno pepper on plant

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fresno chile pepper plant with green leaves, light green chiles, and one red chile

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full frame of red and orange habanero peppers with green stems

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full frame of red, orange, yellow, and green scotch bonnet peppers

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closeup of small, pointy red chupetinha or biquinho peppers on plant

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medusa pepper

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full frame closeup of long, green serrano peppers

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red and green thai chili peppers growing on plant outdoors in garden

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Piquillo Peppers in a vegetable garden closeup.

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Cayenne Peppers growing in a garden

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Rocoto pepper

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A closeup of red Bird’s eye chili growing on green branches

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