Did you planted your lemongrass somewhere where it can get at least 6 hours of direct sunlight?
Did you planted your lemongrass in well-drained soil rich in organic matter?
Are you making sure that the soil is consistently moist?
Did you feed your lemongrass with a nitrogen-rich fertilizer?
Do you live in a region with cold winters?
Did you prune the dead foliage off of your lemongrass?
Do you keep your lemongrass free of pests and diseases?
In its native habitat, lemongrass grows in full sun, even in hot climates. At least six hours of direct sun per day will meet the plants' energy needs. Plants growing in shade will be sparse and may attract pests.
Lemongrass plants prefer rich, loamy soil. You can create this ideal soil by adding several different soil amendments: compost, manure, and leaf mold are all enriching additives that you can add at planting time.
Unlike some ornamental grasses, lemongrass is not a drought-tolerant plant. Keep the roots constantly moist for best plant health. A 3-inch layer of mulch can help conserve soil moisture and will enrich the soil as it breaks down.
As a grassy plant, lemongrass needs a nitrogen-rich fertilizer for its best growth. You can use a slow-release 6-4-0 fertilizer that will feed lemongrass throughout the growing season. You can also water your lemongrass plants with manure tea, which will add trace nutrients.
As tropical plants, lemongrass thrives in hot, steamy climates. Lemongrass is very frost sensitive, so if you plan to overwinter the plant indoors, bring it inside before temperatures drop bellow 50 °F.
Lemongrass plants that live for more than one season benefit from annual pruning to tidy up plants and remove dead foliage. Shear your plants to about 6 inches high at the end of winter, when plants are in their resting phase. Lemongrass plants will rebound quickly and send up new shoots when warm weather returns.
Good job! You are taking good care of your lemongrass.
In some areas, rust fungus can affect lemongrass plants. Symptoms include brown spots or streaks on leaves, leading to plant death. Prevent rust by watering plants at the soil level.
https://www.thespruce.com/lemongrass-plant-profile-4686088
Sreten null
Hi! I’m Sreten Filipović. I graduated from the Faculty of Agriculture at the University of Belgrade, with a master's degree in Environmental Protection in Agricultural Systems. I’ve worked as a researcher at Finland's Natural Resources Institute (LUKE) on a project aimed at adapting south-western Finland to drought episodes. I founded a consulting agency in the field of environment and agriculture to help farmers who want to implement the principles of sustainability on their farms. I’m also a founding member of the nonprofit organization Ecogenesis from Belgrade whose main goal is non-formal education on the environment and ecology. In my spare time, I like to write blog posts about sustainability, the environment, animal farming, horticulture, and plant protection. I’ve also published several science-fiction short stories.
You can find me on LinkedIn at https://www.linkedin.com/in/sreten-filipovi%C4%87-515aa5158/
