Capsicum annuum is the most cultivated pepper species on earth, spanning everything from sweet bells to scorching ornamentals. This hub covers the full breadth of C. annuum varieties tracked on KnowThePepper, from mild Mexican cooking peppers to vivid heat-bearing heirlooms. Whether you grow them, cook with them, or just want to understand the species, this is your starting point.
Capsicum annuum sits at the center of global pepper culture — it is the species behind bell peppers, jalapeños, paprika, cayenne, and hundreds of named varieties grown across every continent. Its heat range runs from 0 SHU (sweet bells) to roughly 100,000 SHU in the hotter ornamental forms, making it the most heat-diverse single species in the genus.
What unifies all C. annuum varieties is not heat — it is genetics and structure. The flowers are white with no purple marking, the fruits set one per node, and the plants are generally more cold-tolerant than their C. chinense or C. frutescens cousins. That cold tolerance made the species the dominant choice across temperate Europe and North America once peppers spread out of the Americas after the 16th century.
The varieties covered on this hub span a wide spectrum. On the mild end, the dried Mexican staple with earthy complexity known as the Chilaca — and its closely related dried form, Pasilla — brings just 1,000-2,500 SHU, a level that adds flavor without serious heat. The NuMex Heritage 6-4 sits in similar territory at 1,000-1,500 SHU, a New Mexico-bred variety developed at the Chile Pepper Institute to preserve the character of the classic 6-4 line.
Step up the scale and you find the round, snackable cherry-type with mild punch Cherry Bomb at 2,500-5,000 SHU — roughly the same range as the long, curved Southern-style fresh pepper with mild heat Cowhorn. Both land well below an Anaheim, which typically runs 500-2,500 SHU, putting these mid-mild varieties at two to three times that benchmark.
Higher still are the ornamental and specialty forms. The vivid multi-colored Bolivian ornamental Bolivian Rainbow reaches 10,000-30,000 SHU, matching the tangy Eastern European yellow heirloom Bulgarian Carrot pepper in its upper range. Both sit roughly ten to fifteen times hotter than a typical Anaheim — serious heat, but still within the range most experienced cooks handle without issue.
The deep-purple jalapeño variant with comparable heat Purple Jalapeño and the dark-podded Hungarian heirloom Black Hungarian represent the ornamental-meets-edible overlap that C. annuum handles better than any other species. Both carry visual drama alongside real culinary utility.
From a growing standpoint, C. annuum varieties are generally the most forgiving for home growers. They germinate faster, tolerate cooler nighttime temperatures, and finish earlier in the season than C. chinense types. Most varieties in this hub reach maturity in 70-90 days from transplant, making them practical for short-season climates. Soil, sun, and consistent moisture matter more than coddling — these are not difficult plants.
Culinary applications range just as widely as the heat. Mild varieties like the Chilhuacle — a thick-walled Mexican pepper central to mole negro — are fundamental to regional Mexican cooking. The brined Chicago-style condiment pepper Sport Pepper is a C. annuum variety so embedded in regional American food culture that a Chicago-style hot dog without it barely qualifies. These are not interchangeable ingredients; each variety carries its own texture, wall thickness, flavor, and cultural role.
About Capsicum Annuum
The most widely cultivated pepper species on Earth. Capsicum annuum includes jalapeños, bell peppers, cayenne, serranos, and hundreds more. If you've eaten a pepper, it was probably this one. We track 110 varieties in this species. All chili peppers belong to five domesticated Capsicum species, each with unique characteristics in heat range, flavor, pod shape, and growing requirements.
The hottest Capsicum annuum in our database is Apollo Pepper at 50K–100K SHU, measured on the Scoville scale. Heat in peppers comes from capsaicin, a compound concentrated in the placental tissue inside the pod.
Growing Capsicum annuum? Start with our seed-to-harvest guide and check the growing calendar for your zone. Understanding pepper anatomy helps identify species traits like seed color, flower count, and pod position.
How to Use This Species Hub
A species hub is most useful when you want to understand the family traits underneath the grocery names. Species explains why peppers can share flower form, pod position, growth habit, or flavor chemistry even when their heat levels are far apart. That matters especially in Capsicum annuum, where one species can cover fresh-eating peppers, frying peppers, drying chiles, ornamentals, and serious heat all at once. Start here to understand the family, then sort by heat tier, origin, or recipe use once you know which branch of the species you actually need.
We currently track 110 varieties in this species, and the biggest origin lane inside that set is USA with 26 entries. That spread is why species pages pair naturally with American Peppers: they show how the same biological family gets expressed in different regional cooking traditions. The 6 linked comparisons help show where shared species is enough for substitution and where it is not.
In practice, the cleanest workflow is to use the species page to set expectations, then jump into the profile that matches your target heat range, wall thickness, or flavor direction. From there, use a comparison or substitute page if the recipe demands flexibility. That keeps the species layer useful for cooks and growers instead of turning it into taxonomy with no payoff.
All Capsicum Annuum
Every variety in this collection, sorted by maximum Scoville heat rating. Click any card for the full profile with flavor notes, anatomy details, growing tips, and substitutes.
Apollo Pepper
Thai Dragon
Bird's Eye Chili
Thai Chili
Chiltepin
Prik Jinda
Teja Chili
Charleston Hot
Prairie Fire
Tien Tsin
Dundicut Pepper
Piquin Pepper
Origins Breakdown
Capsicum annuum varieties are grown worldwide. Explore peppers from specific regions in our origin hub pages.
Heat Level Distribution
How capsicum annuum distribute across the Scoville scale. Click any tier to browse all peppers at that heat level.
Heat Range Comparison
Visual breakdown of where each variety falls on the Scoville scale. The bar width shows the documented SHU spread — wider bars mean more variable heat between individual pods. Learn why heat varies in our guide to pepper heat variation.
Related Comparisons
Side-by-side breakdowns of heat, flavor, and culinary uses. Each comparison covers Scoville ratings, pod anatomy, and substitution options.
Browse all comparisons in our comparison hub, or use the pepper tools for calculators and finders.
Related Guides
Deep-dive articles covering the cooking techniques, growing methods, and science behind capsicum annuum.
Other Capsicum Species
All chili peppers belong to five domesticated Capsicum species. Each species has unique traits in heat capacity, pod shape, and growing requirements.
Frequently Asked Questions
Explore More
Browse our full pepper database, compare varieties head-to-head, or find peppers by heat level. For cooking inspiration, check our guides and recipes.