15 Pepper Varieties to Grow: From Sweet Bell Peppers to Fiery Ghost Peppers
Not sure which pepper to grow? These 15 varieties — ranked from 0 to 1 million SHU — match your kitchen and your USDA zone.
Most gardeners plant bell peppers by default. They’re familiar, widely available as transplants, and work in virtually any recipe. But bell peppers are one of 15 distinctly different pepper types suited to US home gardens — and once you understand what separates them, the default choice might not stay the default.
The gap between the mildest and hottest pepper in this guide spans 1 million Scoville Heat Units. The gap in days-to-maturity stretches from 60 to 150 days. Both measurements matter: heat tells you what’s on your plate, days-to-maturity tells you whether your zone can actually get there before frost. For a direct look at sweet versus hot pepper characteristics, see our hot vs. sweet pepper overview before diving in.
This guide covers 15 varieties organized by heat level — from crisp sweet bells to superhots that take the better part of five months to ripen — with the growing data you need to match the right pepper to your garden and your kitchen.
Why Peppers Vary So Much in Heat
The Scoville Heat Unit (SHU) scale measures capsaicin concentration — originally by taste-dilution testing, now verified by high-performance liquid chromatography. Bell peppers sit at 0 SHU; ghost peppers exceed 1,000,000. That difference isn’t genetics alone, and understanding the mechanism helps you grow hotter or milder peppers on demand.
Capsaicin isn’t produced in the seeds, as is commonly assumed. Peer-reviewed research confirms that approximately 89% of capsaicin in a chili pepper concentrates in the placenta — the white pithy ribs running down the interior of the fruit — with only 5–6% found in the flesh itself [3]. The seeds pick up heat only because they sit in direct contact with the placenta. Remove the ribs before cooking and most of the fire goes with them.
Two converging biochemical pathways produce capsaicin: the phenylpropanoid pathway (generating the vanillylamine component) and branched-chain fatty acid metabolism (supplying the acyl-CoA chain). Capsaicin synthase combines the two, with concentration peaking at 40–50 days into fruit development [3].
One practical implication: controlled water stress during fruiting increases capsaicinoid levels. If you want hotter jalapeños, reduce irrigation slightly once fruits are sizing up. The phenylpropanoid pathway responds to mild drought stress by shifting resources toward capsaicin production [3]. The reverse is also true — consistently well-watered plants in fertile soil tend to produce milder fruit.
15 Pepper Varieties: Quick Comparison
The table below covers all 15 varieties by heat, days to maturity from transplant, and container suitability — the three factors that most affect variety selection for home gardens.
| Variety | SHU Range | Days to Maturity | Container? | Best For |
|---|---|---|---|---|
| Bell Pepper | 0 | 60–90 | Yes (5-gal+) | Fresh eating, stuffing |
| Banana Pepper | 0–100 | 60–75 | Yes | Pickling, fresh |
| Cubanelle | 0–1,000 | 65–70 | Yes | Frying, Italian cooking |
| Pimiento | 0–100 | 80 | Yes | Stuffing, cheese pairings |
| Jimmy Nardello | 0 | 80–90 | Yes | Sautéing, heirloom harvest |
| Shishito | 50–200 | 60–75 | Yes | Blistering, appetizers |
| Poblano | 1,000–2,000 | 65 | Yes | Stuffed peppers, chiles rellenos |
| Anaheim | 500–2,500 | 75–80 | Yes | Mild cooking, New Mexico cuisine |
| Jalapeño | 2,500–10,000 | 65–75 | Yes | Salsas, pickling, all-purpose |
| Serrano | 10,000–25,000 | 70–80 | Yes | Fresh salsas, high-heat cooking |
| Cayenne | 30,000–50,000 | 80–100 | Yes | Drying, hot sauce, powder |
| Thai Hot | 50,000–100,000 | 70–80 | Yes (compact) | Asian cooking, containers |
| Habanero | 100,000–350,000 | 100–110 | Yes | Fruity-hot sauces, Caribbean cooking |
| Scotch Bonnet | 100,000–350,000 | 100–120 | Yes | Caribbean jerk, hot sauces |
| Ghost Pepper | 1,000,000+ | 120–150 | Yes (large pot) | Challenge growing, superhot cooking |
Sweet Peppers: 0–1,000 SHU
Sweet peppers are the workhorse of the kitchen garden — high-yielding, no heat management required, and adaptable across nearly all US growing zones. All five varieties below thrive in USDA zones 4–11 with a standard transplant schedule [1].
1. Bell Pepper
The most widely grown garden pepper in North America. ‘California Wonder’ remains the benchmark cultivar — four-lobed, starts green, matures red with noticeably sweeter flavor. ‘Red Knight’ offers stronger disease resistance and performs better in humid climates [2]. Expect 60–90 days from transplant depending on whether you harvest green (faster, less sweet) or wait for red (full flavor, higher vitamin C). Bell peppers convert from green to red in the final weeks of ripening, during which sugar content climbs sharply. Plant spacing: 18 inches within rows, rows 24–30 inches apart [1].
2. Banana Pepper
‘Sweet Banana’ is the standard variety — long, tapered, pale yellow at harvest, maturing orange-red, ready in 60–75 days. It’s among the most productive peppers for containers: a single plant in a 12-inch pot will out-yield most other container options on sheer fruit count. The flavor is tangy rather than purely sweet, which makes it the best variety for pickling. Heat registers at 0–100 SHU, occasionally spiking slightly higher on water-stressed plants. Harvest while still yellow for the crunchiest texture; allow to ripen red for softer, sweeter flesh.
3. Cubanelle
The Italian frying pepper. Cubanelle has thin walls, low moisture content, and a grassy sweetness that concentrates with heat. It’s the defining pepper for sautéed pepper-and-onion dishes and holds its shape far better than bells when cooked at high temperature. Ready in 65–70 days — one of the faster sweet options for gardeners in zones 5–6 with limited seasons. ‘Cubanelle’ and ‘Giant Marconi’ are both proven varieties for US home gardens [2].
4. Pimiento
Pimientos are heart-shaped, thick-walled, and measurably sweeter than bell peppers at comparable maturity — higher in soluble sugars, with a rounder flavor that makes them the best choice for roasting whole or stuffing with cheese. At 80 days from transplant, they’re slower than banana peppers but compact enough for containers and raised beds where space is limited. Their thick flesh also makes them more forgiving of inconsistent watering than thin-walled varieties.
5. Jimmy Nardello
An Italian heirloom that has become a favorite of market gardeners and home cooks. Jimmy Nardello peppers are long (8–10 inches), thin-skinned, and bright red at maturity — and because of the thin flesh, they fry in under two minutes with a crisp, caramelized sweetness. Zero capsaicin (0 SHU). They take 80–90 days from transplant, but the plant is compact enough for container growing, and yield per square foot is exceptional compared to thicker-walled sweet varieties.
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Mild to Medium Peppers: 1,000–25,000 SHU
This range is where culinary versatility peaks. Enough heat to add depth without requiring gloves for handling, these four varieties suit most home cooks expanding beyond sweet peppers for the first time.
6. Shishito
Shishito peppers have migrated from restaurant menus to home gardens, and the transplants are now widely available. They’re thin-skinned, finger-length, and predominantly mild (50–200 SHU) — but roughly 1 in 10 fruits will register a brief, genuine flash of heat. This unpredictability is part of the appeal. They mature in 60–75 days and are among the most container-friendly peppers in this heat range. The standard preparation — blistered in a dry cast-iron pan with flaky salt — requires no other prep and no heat tolerance.
7. Poblano
Poblanos are large (4–5 inch), dark green peppers with thick walls and 1,000–2,000 SHU — just enough heat to register without overwhelming a dish. They’re the pepper behind chiles rellenos and mole sauce, and when dried they become ancho peppers, nearly doubling their culinary utility. Ready in 65 days from transplant. The plants are vigorous and somewhat sprawling; staking helps once fruit load increases [2]. Poblanos are the logical next step for bell pepper growers who want to move into cooking-specific varieties.
8. Anaheim
Anaheims are the mild cooking pepper of the American Southwest — long (6–8 inches), slightly curved, with a grassy flavor and 500–2,500 SHU. Heat varies with growing conditions: higher altitude and drier soil push capsaicin higher; consistent irrigation produces milder fruit [1]. They’re the peppers used in green chile sauces and canned diced chiles. ‘NuMex Big Jim’ is the most reliable named cultivar for home gardens. Matures at 75–80 days.
9. Jalapeño
The most versatile pepper in this guide, and the right starting point for any gardener adding heat for the first time. ‘Early Jalapeño’ matures in 65 days — the fastest option in its heat range — which makes it viable in zones 5 and above without season extension [4]. Heat ranges from 2,500–10,000 SHU depending on plant stress during fruiting. Green jalapeños are crisp and grassy; left to ripen red, the same fruit is fruitier and up to 3× hotter. A single healthy plant yields 30–40 peppers per season across multiple flushes.
Hot Peppers: 25,000–100,000 SHU
In this range, heat becomes the dominant flavor rather than a background note. Both varieties below are highly productive and tolerate a wider range of growing conditions than the superhots that follow.
10. Serrano
Serranos run 10,000–25,000 SHU with a brighter, crisper burn than jalapeños — cleaner rather than vegetal. The pods are small (1–2 inches), extremely prolific, and mature in 70–80 days. A single serrano plant typically produces 50+ fruits across a season. They’re thinner-skinned than jalapeños, which makes them best used fresh rather than dried — in salsas, ceviches, and relishes where the sharpness is an asset. Container-viable in a 3-gallon pot minimum.
11. Cayenne
Cayenne peppers are grown almost exclusively for processing — drying, grinding into powder, or making hot sauce — rather than fresh use. The pods are long (4–6 inches), slender, and mature from green to red at 80–100 days. At 30,000–50,000 SHU, a single dried cayenne seasons an entire pot of soup. NC State identifies Longum Group cayenne-type peppers as among the most adaptable to US conditions, thriving in zones 4–11 with full sun [4]. Air-drying is straightforward: tie harvested pods together and hang in a warm, ventilated space for 2–3 weeks.
Super-Hot Peppers: 100,000+ SHU
Super-hot varieties require longer seasons (100–150 days from transplant), consistent warm nights above 65°F, and patience. They’re not technically difficult — but short-season gardeners in zones 3–5 will need to start seeds 10–12 weeks indoors and consider row covers to extend the season at both ends.
12. Thai Hot
Thai Hot peppers are the most container-practical super-hot on this list. Plants are naturally compact (12–18 inches tall) and covered with small upright pods that ripen from green to bright red at 50,000–100,000 SHU. They mature in 70–80 days — faster than habaneros or ghost peppers — which makes them viable in zones 5 and above without season extension [4]. Essential in Southeast Asian cooking, the pods freeze well and retain heat after freezing. A 3-gallon pot is sufficient for a full-season plant.
13. Habanero
Habaneros are the most flavor-complex pepper in the super-hot category. Heat registers at 100,000–350,000 SHU, but what distinguishes them from pure-heat peppers is a fruity, tropical flavor profile — citrus, apricot, and floral notes alongside the burn. ‘Orange Habanero’ is the standard; ‘Red Savina’ runs hotter (350,000–580,000 SHU) for those who want to push further. Matures in 100–110 days, which requires an early indoor start (8–10 weeks) in zones 5–7. Growth stalls below 65°F soil temperature, so delay transplanting until nighttime temperatures are consistently warm [2].
14. Scotch Bonnet
Botanically close to habanero and nearly identical in heat (100,000–350,000 SHU), Scotch Bonnets have a slightly sweeter, fruitier flavor and are the defining pepper of Caribbean jerk seasoning. The squat bonnet shape distinguishes them visually from habanero’s lantern form. They require the same long season (100–120 days) and warm conditions as habaneros. If you’re cooking Caribbean food specifically, Scotch Bonnet is the more authentic choice; for general super-hot use, the two are interchangeable in the garden.
15. Ghost Pepper (Bhut Jolokia)
The ghost pepper exceeded 1,000,000 SHU when formally tested in 2007, briefly holding the world record. At 120–150 days from transplant, it’s the longest-season variety in this guide — which effectively rules it out for zones 3–5 without starting seeds 12 weeks indoors and using row covers at both ends of the season. Zone 6–11 growers with full sun and consistently warm nights can grow it without special equipment [5]. Two to three ghost pepper pods is enough for an entire bottle of hot sauce; treat it as a flavoring ingredient in small quantities rather than a fresh-eating pepper.
Choosing Your Varieties by Garden and Zone
The most common growing mistake with peppers isn’t poor soil or overwatering — it’s choosing a long-season variety for a short-season climate. A habanero transplanted in zone 5 after a May 15 last frost has roughly 140 frost-free days to reach full maturity. That’s barely enough, and only if the transplant goes out exactly on schedule and September holds warm [5].
Short seasons (Zones 3–5): Choose varieties under 80 days. Early Jalapeño (65 days), Shishito (60–75 days), Serrano (70–80 days), and Banana Pepper (60–75 days) all finish comfortably. Start seeds 8–10 weeks before your last frost date indoors, and consider black plastic mulch at transplant time — it adds 3–5°F of soil temperature and accelerates early establishment [1].
Mid-length seasons (Zones 6–8): Nearly all 15 varieties are viable. Habanero and Scotch Bonnet need an early indoor start (8–10 weeks) to guarantee maturity before frost. Zone 8 gardeners can start habanero seeds as early as January for a March transplant [5].
Warm seasons (Zones 9–11): Two growing seasons are possible — spring-summer and fall-winter. Ghost peppers planted in spring can produce a second flush of fruit in the fall without being pulled. UF/IFAS recommends ‘Mariachi’ and ‘Cubanelle’ for Florida’s specific heat and humidity [2].
Container growing: Most varieties thrive in containers 12 inches in diameter or larger. Best container choices by category: sweet — Banana Pepper and Jimmy Nardello; mild-medium — Shishito and Early Jalapeño; super-hot — Thai Hot. Use a well-draining potting mix rather than garden soil, and hold back on nitrogen fertilizer once flowers appear — excess nitrogen delays fruiting [2]. For zone-specific transplant timing alongside other warm-season crops, the year-round planting guide covers pepper windows by zone. Peppers and tomatoes share nearly identical cultural requirements — spacing, soil fertility, and watering — so the tomato growing guide is directly applicable if you’re setting up a warm-season vegetable bed.
Frequently Asked Questions
What is the mildest pepper to grow?
Bell peppers register 0 SHU — no capsaicin at all. Pimientos and Jimmy Nardello peppers are also 0 SHU with more culinary flexibility in cooked dishes than bells.
Which pepper is easiest for first-time growers?
Early Jalapeño. It matures in 65 days, produces reliably across zones 5–11, tolerates container growing, and delivers enough heat to be interesting without requiring special handling.
Can peppers grow in containers?
Yes — nearly all varieties thrive in containers 12 inches or larger. Thai Hot is the best compact super-hot for patio growing; Shishito delivers the highest yield of mild peppers per square foot of container space. Use a 5-gallon pot for bells or larger varieties.
Why are red peppers hotter than green peppers from the same plant?
Capsaicin concentration peaks at 40–50 days into fruit development [3]. Green peppers are harvested before peak accumulation; red peppers are the same fruit allowed to ripen fully, containing 2–3× more capsaicin. The heat was always building — red harvesting simply captures it at maximum concentration.
Sources
Iowa State University Extension — Growing Peppers in the Home Garden
University of Florida IFAS Extension — Peppers
PMC/NIH — Capsaicin: Biosynthesis, Antiobesity Properties, and Applications (pmc.ncbi.nlm.nih.gov/articles/PMC11543913/)
NC State Extension — Capsicum annuum
Pepper Geek — When to Plant Peppers by Zone
