Gotu kola is a low, creeping herb with round, scalloped leaves. It behaves less like a typical kitchen herb and more like a groundcover from damp tropical ground. Growing it well mostly means copying a warm, wet, lightly shaded patch of earth, and once it’s happy it spreads on its own.
You pick leaves from it again and again rather than harvesting once, so how you pick shapes how long it keeps producing. The same thirst that lets it thrive in wet soil also means it draws up whatever that soil holds, so where you plant it is a safety question too.
Where Gotu Kola Grows Best
Most gotu kola plants grow more leaves in about 50% shade than in full sun.1The Journal of Horticultural Science and Biotechnology. Screening of genetic resources of the medicinal-vegetable plant Centella asiatica for herb and asiaticoside yields under shaded and full sunlight conditions A few strains do just as well in full light, so a plant that already thrives in your sunny spot needn’t move. Deep shade under dense trees, though, cuts leaf growth noticeably.2IOP Conference Series: Earth and Environmental Science. The potential of Curcuma longa, Curcuma xanthoriza and Centella asiatica in Silvofarmaka System Based on Melia azedarach and Azadirachta excelsa Dappled light, or morning sun with afternoon shade, is the target.
It thrives in rich, loamy soil with a pH of about 6.0 to 7.0.3VegPlotter. How to grow Gotu Kola It tolerates mildly acid to mildly alkaline soil, so you rarely need to adjust pH.4Plants For A Future. Gotu Kola Digging in compost can greatly increase how much leaf a plant produces, while liquid organic feeds showed little clear benefit on their own.5IOP Conference Series: Earth and Environmental Science. Response of Gotu Kola Plants (Centella asiatica (L.) Urban) to Corn Cob Compost and Liquid Organic Fertilizer from Banana Corms and Moringa Leaves
Water is the deciding factor. The soil should stay constantly damp, never drying out between waterings.6VegPlotter. How to grow Gotu Kola That’s because the plant is semi-aquatic and can even grow in shallow water gardens or bog planters.7PlotMyGarden. Grow Gotu Kola: Care, Harvest & Companion Plants Even so, soggy, airless soil is different from constantly moist soil, so avoid pots sitting in stagnant puddles. In a typical yard, the damp edge near a downspout or pond, or the ground under a tree’s light canopy, often suits it.
Gotu kola is a tropical and subtropical plant, and it grows fastest in warm weather. Frost damages or kills the top growth, and growth slows sharply in cool weather, so expect less to pick. In cooler regions, treat it as a summer plant outdoors or keep it in pots.
Before planting, loosen the soil and mix in a generous layer of compost. Add mulch to hold moisture, and check that water soaks in rather than pooling for days.
Starting From Seed or Runners
Press seeds onto the surface of a very well-drained mix rather than burying them.8Strictly Medicinal Seeds. Gotu Kola (Centella asiatica), packet of 30 seeds, Organic They need light, and a thin 1/8-inch layer of fine pumice on top can help them come up.9Strictly Medicinal Seeds. Gotu Kola (Centella asiatica), packet of 30 seeds, Organic In normal conditions seeds may take 30 to 90 days to sprout.10Strictly Medicinal Seeds. Gotu Kola (Centella asiatica), packet of 30 seeds, Organic Kept at 60°F (about 16°C) or warmer under a grow light, one sowing sprouted heavily at day 19.11Strictly Medicinal Seeds. Gotu Kola (Centella asiatica), packet of 30 seeds, Organic Some seed sellers advertise 5 to 10 days, so treat fast germination as a bonus, not the norm.12Magicgardenseeds. Gotu Kola (Centella asiatica) seeds Seed sown in a cold greenhouse in fall may wait until spring to sprout.13Strictly Medicinal Seeds. Gotu Kola (Centella asiatica), packet of 30 seeds, Organic
Seed is a gamble for most home growers. A tray can look dead for weeks while seeds are still working, so a bare tray at week four is not a failure. Fresh seed gives better odds than a leftover packet, and seedlings can vary in leaf size and vigor, which is one reason many gardeners prefer cuttings.
Runners are the easier way to start. These are the creeping stems that root where leaf nodes touch soil. Cut a piece with roots and a few leaves and plant it in moist soil, then keep it shaded and wet for the first week while it settles. A single bought plant can supply many new starts within a season.
If you don’t have a plant, a potted one from a nursery or herb seller, or a rooted piece from another gardener, is the usual starting point. Look for healthy green leaves and white or pale roots at the base; a plant that is yellow or has been sitting dry will take longer to settle.
Seedlings need gentle handling. Water from below or with a mister so seeds don’t wash away, and keep the mix damp but not waterlogged during the long wait. Move seedlings to pots once they have a few true leaves.
When planting out, remember that plants spread sideways, so give them room or a barrier. Set starts a hand-width or more apart and let them fill in, and water well right after planting.
Growing Gotu Kola in Pots and Indoors
Gotu kola does well in wide, shallow pots that suit its spreading habit.14PlotMyGarden. Grow Gotu Kola: Care, Harvest & Companion Plants Use a pot at least 30 cm (12 inches) wide and 15 cm (6 inches) deep with drainage holes.15PlotMyGarden. Grow Gotu Kola: Care, Harvest & Companion Plants A pot also keeps it from spreading through the rest of the garden.16PlotMyGarden. Grow Gotu Kola: Care, Harvest & Companion Plants A crowded, root-bound plant gives smaller, less flavorful leaves,17PlotMyGarden. Grow Gotu Kola: Care, Harvest & Companion Plants so divide or repot once roots fill the container.
For the mix, use something rich with compost that holds water. Avoid fast-draining cactus mixes for grown plants, and refresh the pot with compost each spring.
Outdoors in summer, a spot with morning sun and afternoon shade, such as the east side of a house, suits a potted plant better than a hot south-facing patio. Dark pots on pavement heat up and dry out fast, so a lighter pot, or one set on a shaded surface, keeps roots cooler.
In cooler climates, grow it in pots you can bring indoors before the first frost.18PlotMyGarden. Grow Gotu Kola: Care, Harvest & Companion Plants Place it in a bright window with some direct light. Pots dry faster indoors with heating, so check the soil daily; a saucer of water underneath can keep this water-loving plant moist. Expect slower growth and smaller harvests until spring.
Feeding, Weeding and Everyday Care
Weeds compete strongly with gotu kola and cut leaf harvests.19Medicinal Plants – International Journal of Phytomedicines and Related Industries. Assessing the impact of organic mulches on weed control, crop growth, herbage yield and triterpenoids yield of Centella asiatica L. under western ghats region of Karnataka In one trial, beds left weedy produced the lowest yields.20Medicinal Plants – International Journal of Phytomedicines and Related Industries. Assessing the impact of organic mulches on weed control, crop growth, herbage yield and triterpenoids yield of Centella asiatica L. under western ghats region of Karnataka An organic mulch plus one hand-weeding about six weeks after planting controlled weeds well and gave better harvests.21Medicinal Plants – International Journal of Phytomedicines and Related Industries. Assessing the impact of organic mulches on weed control, crop growth, herbage yield and triterpenoids yield of Centella asiatica L. under western ghats region of Karnataka Mulch with shredded husks, leaves or straw, and pull weeds early.
Compost is the feed with the clearest benefit.22IOP Conference Series: Earth and Environmental Science. Response of Gotu Kola Plants (Centella asiatica (L.) Urban) to Corn Cob Compost and Liquid Organic Fertilizer from Banana Corms and Moringa Leaves Top-dress beds with it a couple of times a season.
Runners can move into lawns and paths. Edge beds or sink a barrier a few inches down, and pull wandering runners to replant or share.
The leaves tell you a lot. Yellowing can point to dry or tired soil, and scorched edges can suggest too much sun. Long, stretched stems mean too little light, and small leaves in pots suggest crowding.
Variety matters too. Some types have small leaves and others broad ones, and broad-leaved types usually give more leaf to pick.
When and How to Harvest
Plants can be ready to pick about 60 days after planting once they spread actively.23PlotMyGarden. Grow Gotu Kola: Care, Harvest & Companion Plants Other growers wait 3 to 6 months, so judge by a well-filled plant rather than the calendar.24VegPlotter. VegPlotter | How to grow Gotu Kola Leaves are ready when green and about 1 to 2 inches across.25VegPlotter. VegPlotter | How to grow Gotu Kola Pick in the morning, when leaves are crispest.26PlotMyGarden. Grow Gotu Kola: Care, Harvest & Companion Plants If most leaves are still small and the plant has only a handful, give it a couple more weeks of water and shade.
Take leaves or stems from the outer edges and leave the growing center intact.27PlotMyGarden. Grow Gotu Kola: Care, Harvest & Companion Plants Pinch leaves at the base of the stalk or snip with clean scissors,28VegPlotter. VegPlotter | How to grow Gotu Kola but take no more than a third of the leaves at a time.29VegPlotter. VegPlotter | How to grow Gotu Kola Shearing the whole plant leaves too little leaf to regrow and can weaken or kill young plants. Regrowth can allow picking every couple of weeks in warm climates, slower in cool or indoor spots.30VegPlotter. VegPlotter | How to grow Gotu Kola Regular picking keeps the plant from going woody or leggy.31PlotMyGarden. Grow Gotu Kola: Care, Harvest & Companion Plants
Hold the stem with one hand and pinch or snip with the other so you don’t tug the whole runner out of the soil. Clean scissors matter because torn or crushed stems can rot, and a clean cut heals faster. Take whole leaves with a short length of stalk rather than nipping off just the blade, since leftover stalks tend to wither and brown.
Young, bright green leaves have the best flavor.32PlotMyGarden. Grow Gotu Kola: Care, Harvest & Companion Plants Skip yellow or wilted leaves.33VegPlotter. VegPlotter | How to grow Gotu Kola Rotate around the plant so no side is stripped, water after a big harvest to speed regrowth, and ease off picking as cold weather arrives.
Grow It in Clean Soil
Gotu kola can build up cadmium in its roots to levels higher than in the surrounding soil.34Industrial Crops and Products. Heavy metal accumulation efficiency, growth and centelloside production in the medicinal herb Centella asiatica (L.) urban under different soil concentrations of cadmium and lead Plants grown on polluted soil also took up lead, zinc and nickel,35PubMed. Effects of metal-contaminated soils on the accumulation of heavy metals in gotu kola (Centella asiatica) and the potential health risks: a study in Peninsular Malaysia so eating leaves daily from polluted sites is not advised.36PubMed. Effects of metal-contaminated soils on the accumulation of heavy metals in gotu kola (Centella asiatica) and the potential health risks: a study in Peninsular Malaysia Long-term eating of leaves high in these metals may carry health risks such as kidney harm.37SN Applied Sciences. Heavy metal concentrations in the edible portions of Centella asiatica: Health risk toward chronic kidney disease of uncertain etiology Washing removes surface dust and dirt but not metals already absorbed into the tissue.
Avoid soil near busy roads, old painted buildings or former industrial land, and beds where runoff from treated wood or old pipes collects. If you’re unsure, have the soil tested or grow in pots with bought potting mix. Use clean water too.
A home gardener can send a soil sample to a lab or local extension service and ask for a heavy-metal panel, since a standard fertility test doesn’t check for them. Results are compared with published safety guidelines for garden soil, and if levels are high, the safer choice is to avoid growing edible plants there. Test where you actually plan to plant, since contamination can vary within a single yard.
Gotu kola also grows wild in ditches and wet ground that may be polluted. Gathering from unknown roadside sites carries the same risk, and your own clean bed is the safer source.
Storing and Drying Your Harvest
For fresh leaves, rinse and pat them dry, then wrap them in a damp towel inside a bag in the fridge. Use them within a few days for salads, juices or sambols.
Quick, warm drying can preserve much of the leaves’ plant compounds,38ScienceDirect (Elsevier / Food and Humanity). Effect of drying techniques on phytochemical properties of Centella asiatica and its application in formulation of herbal yoghurt so dry leaves fast in a dehydrator or a warm, airy spot out of direct sun. Rinse the leaves, shake or pat off all surface water, and spread them in a single layer so air can move around each one. In a dehydrator, use a low setting and check often, because thin leaves dry quickly and over-drying makes them brittle and dull. In a warm airy spot, turn the leaves daily; direct sun can bleach them.
Leaves are ready when they crumble. Store them in an airtight jar away from light, label it with the date, and use within a year. Dried leaves are good for tea.