Cymbopogon citratus (lemongrass).

Abstract

Abstract Genetics: The chromosome number reported for C. citratus is 2n = 40 (Flora of China, 2016). Reproductive biologyIn most places Cymbopogon citratus flowers very rarely or not at all. It mostly reproduces vegetatively (Oyen, 1999). Physiology and phenology: In China, C. citratus has been recorded flowering and fruiting during summer (Flora of China, 2016). Longevity: Cymbopogon citratus has a life-span of 4-6 years (Oyen, 1999). Environmental requirements: Cymbopogon citratus grows best under sunny, warm and humid conditions at elevations below 750 m, with mean annual temperatures ranging from 23°C to 30°C and mean annual rainfall between 2500-3000 mm. It is adapted to grow on a wide variety of soils types, but prefers well-drained soils with pH ranging from 5.5 to 7.5. However, this species has been recorded growing in Australia on clay soils with pH=9.6. It does not tolerate saline soils or frosty conditions (Oyen, 1999).