started lemongrass for oil, want to know harvest cuttings per year and distillation basics
3 Answers
Lemongrass is a perennial grass that, once established, gives several cuttings a year, commonly three to four or more depending on rainfall, fertility and climate, for several years before replanting. Cut the grass a little above the base, let it wilt briefly, then steam or water and steam distil to extract the oil, with recovery being a small fraction of the fresh weight that depends on grass quality and citral content. Harvest at the right stage for good oil and citral, do not let it over mature or get too dry. Keep the distillation unit and water clean and condense well to avoid oil loss. Lemongrass oil price and citral demand vary, so do not assume a fixed income. Confirm variety and distillation details with your KVK or CSIR aroma mission centre.
Mine gives me three to four cuttings a year once it settled in, and the clump keeps coming for a few years before I replant. Cutting a little above the base lets it flush again fast. It is a hardy crop on my slope.
Do not over dry the cut grass before distilling, a short wilt is enough. Fully dried grass lost oil for me. And keep the condenser water cool and clean, that is where I was losing oil before I fixed the setup.