The intensity of hot peppers is measured on the Scoville Scale, a system of gauging the Heat and spiciness of foods. Reported in Heat Units referred to as "SHU". The higher a peppers number on the Scoville scale the more intense the flavor and heat.
Sweet Pepper on the scoville scale runs from 0 - 100 while those sado-masochistic peppers such as the Trinidad scorpion sometimes run into the millions.
Anaheim Chilli [500-2500 SHU]
Poblano Peppers [1,000 - 2,000 SHU]
Hungarian Wax [1,000 to 15,000 SHU]
Jalapeņo Peppers [2,500 - 10,000 SHU]
Serrano Chilli [6,000-23,000 SHU]
Cayenne Peppers [30,000 - 50,000 SHU]
Tabasco Peppers [30,000 - 50,000 SHU]
Thai Pepper [50,000 - 100,000 SHU]
Habanero Hot Peppers [100,000 - 350,000 SHU]
Trinidad Scorpion Pepper [1,000,000 - 1,200,000 SHU]
Guinness book of World Records lists the Carolina Reaper Pepper, a close relative of the Trinidad Scorpion as the Worlds hottest pepper, however botanists argue that the Carolina Reaper and Trinidad Scorpion are actually the same genus. In 2011 a Trinidad Scorpion pepper was measured at 1,463,700 SHU, officially making it the Worlds hottest pepper at that time.  The average mean measurement of this pepper is actually 1.2 Million SHU.
Partial Sun - without some shade , even though these are tropical plants - they will scald without a little shade.
Spacing [Outdoors] 24 - 32"
Fertilize frequently only once the plant is established, generally less than halfway through its first season.
Water generously on a regular basis. This plant is not drought resistant so do not allow the soil to become overly dry - by the same token don't drown them either as root rot is not unheard of.
Plant Height - 3 to 4 Ft
In the dog days of summer it is best to water in the morning before the sun delivers a full dose of heat and sunshine. Watering these or any plants in full blazing sunlight can and frequently does cause sun scald.
If you want a less intense pepper, harvest them a few weeks before full maturity, for the most painfully delicious hot peppers allow them to ripen to their most exquisite level of masochistic ripeness.
They are not bothered by very many pests, aphids from time to time and sometimes spider mites. Either pest can be treated with insecticidal soap. Spray the plants thoroughly with insecticidal soap weekly [Not weakly - but weekly] if they're affected. Stop applying it once the pests are gone. Avoid using insecticidal soap during periods of higher temperature.
Pepper Varieties Pepper Plant Diseases Pepper Plant Pests
Pepper Companions Preserving Hot Peppers