How To Care Lemongrass Plant. The soil should only ever feel dampnot soggy. As a grassy plant lemongrass needs a nitrogen-rich fertilizer for its best growth.
Change water every day. To harvest your lemongrass for use trim leaves once the plant is established at least 1 foot in height. How To Grow Lemongrass Plants.
You can use a slow-release 6-4-0 fertilizer that will feed lemongrass throughout the growing season.
Plant your lemongrass in any no-frost climate. Stick your finger into the top two inches of soil. When you get home trim a couple of inches 5 cm off the top of the lemongrass plants and peel away anything that looks somewhat dead. The general rule of thumb for finding the right schedule is to check the soil directly.