How to Grow Misai Kucing (Cat's Whiskers) from Seed in Malaysia
How to grow misai kucing (cat's whiskers, Orthosiphon) in Malaysia: sowing tiny seeds, potting up, pruning, flowers, pests and growing more from cuttings.
- Difficulty
- Medium
- Days to harvest
- 80–100 days
- Updated
- 2026-11-05
Yes — misai kucing (cat's whiskers, Orthosiphon, 猫须草) is a true local plant and grows happily in lowland Malaysian heat and humidity. It is a bushy perennial, about 50–100 cm tall, with spikes of white or pale lilac flowers whose long stamens look like a cat's whiskers. From seed, expect first flowers and leaf picking from about 3 months. Expect a slow start: the seeds are tiny, sprout unevenly over 1–3 weeks and the seedlings are delicate. Once you have one strong plant, though, stem cuttings root easily and you will rarely need seed again.
The leaves are traditionally dried for tea. This guide is about growing the plant; it is not medical advice.
Quick facts
| Item | Misai kucing |
|---|---|
| Sun | Full sun to light shade; at least 4–5 hours of direct sun |
| Sowing depth | On the surface; do not cover |
| Germination | About 7–21 days, often uneven |
| Spacing | 40–50 cm between plants |
| Days to harvest | First flowers and leaves from about 80–100 days |
| Container | 30 cm pot or large polybag per plant |
| Support | Not needed; regular pruning keeps it bushy |
Choosing a spot and container
Misai kucing flowers best with at least 4–5 hours of direct sun — a terrace-house yard, a sunny fence line or a bright balcony. In deep shade it grows lanky with few flowers. On a very hot west-facing balcony, a little afternoon shade stops potted leaves scorching.
In containers, use a 30 cm pot or large polybag per plant; smaller pots dry out quickly. Bees and butterflies visit the flowers all day, so it is lovely near a window or path.
Soil and potting mix
It likes a loamy, well-drained mix with some organic matter:
- 2 parts garden soil or potting mix
- 1 part compost
- 1 part burnt rice husk (sekam bakar) or coarse sand
For sowing, use a fine seedling mix; coarse lumps hide tiny seeds from the light.
How to sow misai kucing step by step
- Prepare a tray or shallow pot with fine, moist seedling mix. Water it from below or with a fine mist so the surface is level and damp.
- Sow on the surface. Tip the seeds onto a folded piece of paper and tap them out thinly over the surface. Press gently with a flat hand. Do not cover them.
- Keep humid. Cover with a clear lid or slip the tray into a clear plastic bag. Place in bright shade, never in direct sun while covered.
- Water from below. Stand the tray in a shallow dish of water for a few minutes when the surface starts to look pale. Watering from above can wash tiny seeds away.
- Wait. Seedlings appear over about 7–21 days, a few at a time. Once most are up, open the cover gradually over 2–3 days.
- Thin. Snip crowded seedlings so the rest stand about 5 cm apart.
Misai Kucing (Cat's Whiskers) Seeds
Bushy local herb with white or lilac 'whisker' flowers; the leaves are traditionally dried for tea.
Potting up and planting out
At 4–6 leaves, lift seedlings with a chopstick into their own small pots. Keep them in bright shade for a week, then give more sun. Plant out at about 10–15 cm tall, 40–50 cm apart. Heavy rain flattens young seedlings, so keep them under a roof edge until sturdy.
Pruning and growing more from cuttings
- Pinch the growing tips when plants are about 20 cm tall, and keep pinching for the first couple of months. This gives a bushy plant with many flower spikes.
- After each flush of flowers fades, trim the spent spikes and cut back the stems by about a third.
- After a year or two, plants can turn woody and sparse at the base. Cut them back hard, or replace them with fresh cuttings.
Cuttings: take 10–15 cm pieces of soft, non-flowering stem, remove the lower leaves and push them into moist potting mix in bright shade. Keep moist, and roots usually form within a few weeks.
Watering in hot and rainy weather
- Hot, dry spells: potted plants may need water every 1–2 days. Water deeply in the morning until it runs out of the drainage holes.
- Rainy season: it dislikes waterlogged roots. Use free-draining mix, raise pots and empty saucers.
- Mulch plants in the ground with dry leaves or grass clippings to keep the roots cool.
Feeding
Mix compost into the soil at planting. Then give a light feed about once a month: a little compost or a balanced fertilizer at half strength. Too much nitrogen gives soft leafy growth with fewer flowers.
Common pests and problems in Malaysia
- Aphids, mealybugs and whiteflies. Clusters on new shoots and under leaves. Spray with water, diluted neem oil or a mild soap solution in the evening. Check where ants are running — they often farm these pests.
- Caterpillars. Chewed leaves. Pick them off by hand.
- Spider mites. Pale speckled leaves in dry weather, mostly on balconies. Mist the undersides of leaves and spray neem.
- Root and stem rot. Wilting despite wet soil, usually after long rain in a pot that does not drain. Improve drainage and take cuttings from healthy stems as a backup.
- Damping off. Seedlings collapse at soil level. Use fresh mix, water from below and give air once they sprout.
Harvesting leaves and enjoying the flowers
Once plants are bushy and about 30 cm tall, pick young leaves and shoot tips as needed, never more than a third of the plant at once. Picking tips also makes the plant branch more. To dry leaves, spread them in a single layer in a shaded, airy place until crisp, then store in an airtight jar.
Flowers come in waves through the year. Leave some spikes for the bees and butterflies, and trim them once they fade.
FAQ
Why are my seedlings so slow? That is normal for misai kucing. Seedlings stay tiny for the first few weeks, then speed up once potted on into good mix.
Will my flowers be white or purple? Plants grown from seed can vary between white and pale lilac. If you love one plant's colour, keep it going from cuttings.
Does it need to be replanted every year? No. It is a perennial. With regular trimming one plant lasts a few years, and cuttings renew it.