Pequin Chili

Maturity: around 120 days

Tiny chile, usually only 1" long, but extremely hot, and one of the hottest chiles available. The pequin (meaning little) is a common chile used for ultra-spicy dishes. Plants are semi-annuals and in warmer areas can survive for several years. Closely related to the wild Tepin chile.
Origin: Probably Mexico.

Orange Habanero Pepper

1-1.5" long, orange colored pepper. Extremely hot, the orange habanero is one of the spiciest peppers in the world. It is often used in making hot sauces. Be very careful when handling the seeds or inner parts of this pepper, the oil can be a serious irritant to the skin and eyes.
Origin: Capsicum chinense originates from Brazil and has been domesticated since 2000-1000 B.C. The orange habanero variety is believed to have originated in the Yucutan. It is grown commercially in some areas.

Numex Twilight

Small, very spicy pepper usually grown for its interesting ornamental characteristics. Peppers slowly ripen from green to yellow, to purple, orange, and finally red. Small plants are filled with multi-colored fruits throughout the growing season.

Manzano Pepper

Extremely hot, orange colored pepper looking much like the habanero. This pepper is a rocoto tree pepper relative and is noted for its cold hardiness, as it naturally grows on Andean mountain slopes, this pepper will survive several degrees below freezing. Plants grow to 2-6ft, can live for many years.

Kung Pao

A long, red, thin-skinned pepper with a mildly hot flavor. Excellent for use in Asian cooking. Plants bear heavily. Fruits can grow to 6-9 and are very slender. A recent hybrid introduction.

Japanese Chili

Slender, red chile with a mildly hot flavor. Similar to Cayenne, and Thai Dragon peppers.

Jalapeno

Medium sized green pepper, the most popular in the United States for eating and cooking. Mild flavor, 2000-5000 Schoville. Eaten raw or cooked, the jalapeno is an important ingredient in numerous dishes. When dried, it is known as chipotle. Easily container grown, or as an annual.