Coleus
A foliage plant with brilliantly colored leaves in endless combinations of red, green, yellow, orange, and purple patterns.
On this pageOverview
Meet Coleus
A foliage plant with brilliantly colored leaves in endless combinations of red, green, yellow, orange, and purple patterns. Modern sun-tolerant coleus varieties thrive in both sun and shade, making them incredibly versatile for any garden situation. Pinch flower spikes to keep plants bushy and take cuttings easily in water for propagation.
When to plant Coleus
Sow coleus seeds indoors eight to twelve weeks before the last frost date. Press tiny seeds onto the surface of moist seed-starting mix without covering, as they need light to germinate. Maintain soil temperature of 70 to 75 degrees Fahrenheit. Seeds germinate in ten to fourteen days. Grow seedlings under bright light to develop the best color. Transplant to individual pots when seedlings have two sets of true leaves and harden off before planting outdoors after frost danger passes.
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Used once to set your season · never sharedHow to grow Coleus
Start coleus seeds indoors eight to ten weeks before the last frost date. Sow seeds on the surface of moist seed-starting mix without covering, as they require light for germination. Maintain temperatures of 70 to 75 degrees Fahrenheit and expect germination in ten to fourteen days. Seedlings are slow-growing initially but accelerate once they develop several true leaves.
Transplant outdoors after all frost danger has passed and nighttime temperatures stay above 55 degrees Fahrenheit. Space plants twelve to eighteen inches apart depending on variety size. Modern sun-tolerant varieties handle full sun, but traditional types perform best in partial to full shade. Water regularly to keep soil consistently moist but not waterlogged.
Pinch the growing tips when plants reach six inches tall to promote bushy, well-branched growth. Continue pinching throughout the season to maintain compact form. Remove flower spikes as they appear, since flowering signals the plant to slow leaf production and can cause leggy growth. Take stem cuttings in late summer to root in water for overwintering indoors.
The bed planner spaces every plant for you
Pick a bed size and PlotMyGarden spaces your Coleus at 30 cm, counts how many fit, and lays the block out before you buy a single seed.
Coleus's best neighbours
Coleus pairs beautifully with shade-loving companions like begonias, impatiens, caladiums, and ferns. Use contrasting coleus colors to create dynamic foliage combinations without relying on flowers. In sun, combine with petunias, lantana, and ornamental grasses. Coleus makes an excellent filler in container combinations and provides season-long color when flowers fade between bloom cycles.
It flags clashes before you plant, not after
Every plant you place is checked against its neighbours in real time. Good matches glow green; conflicts get flagged on the spot — so a season-wrecking mistake never makes it into the ground.
Feed it well
Coleus thrives in rich, well-drained soil amended with compost or aged manure. A slightly acidic to neutral pH of 6.0 to 7.0 is ideal. Feed every two to three weeks with a balanced liquid fertilizer diluted to half strength during the growing season. Avoid heavy nitrogen feeding which can wash out leaf colors. Container-grown coleus benefits from a premium potting mix with added perlite for drainage.
Ideal Temperature
Hardiness Zone Compatibility
From seed to harvest, stage by stage
Seed Germination
Coleus seeds are extremely fine, almost dust-like, and require light to germinate. They should be surface-sown on moist seed-starting mix without any covering. At optimal temperatures of 22-25°C (72-77°F), germination occurs in 10-14 days. Seeds are slow and somewhat erratic, so patience is important during this stage.
Seedling Stage
Tiny cotyledons emerge first, followed by the first true leaves which begin to show faint hints of the mature color pattern. Seedlings are very small and delicate during this phase. Color intensifies gradually as the leaves expand and receive adequate light. Growth is relatively slow compared to many annuals.
Juvenile Growth
The plant begins developing its characteristic leaf colors and patterns in full. Stems strengthen and the plant starts branching naturally. Leaf size increases significantly and the overall plant form becomes apparent. This is an ideal stage to begin pinching for bushier growth and to take the first cuttings for propagation.
Mature Vegetative Stage
The coleus reaches its full glory with richly colored, fully developed foliage. Plants can reach 30-90 cm tall depending on cultivar. The branching structure is well established, creating a full, bushy specimen. Leaf colors are at their most vivid, especially with proper light exposure. This is the peak ornamental display period.
Flowering and Seed Setting
If flower spikes are not removed, coleus produces slender racemes of small tubular blue to purple flowers. While mildly attractive to pollinators, flowering signals the plant to slow foliage production and can cause the overall plant form to become leggy and open. After flowering, small nutlet seeds develop within the calyces.
Decline and Overwintering Preparation
As temperatures drop below 10°C (50°F), coleus growth slows dramatically and foliage colors may fade. The plant is highly frost-sensitive and will be killed by the first freeze. This stage is the critical window for taking cuttings to overwinter indoors or bringing container plants inside before cold weather arrives.
Press seeds gently onto the surface of pre-moistened sterile seed-starting mix. Do not cover them, as they are light-dependent germinators. Maintain consistent moisture by misting or bottom-watering and cover trays with clear plastic or a humidity dome to prevent drying out.
Caring for Coleus month by month
What to do each month for your Coleus
July
You are hereNo specific care tasks for this month.
Harvesting Coleus
Harvest coleus stems for indoor arrangements by cutting just above a leaf node, which encourages bushier regrowth. Cut in the morning when stems are most turgid. Remove lower leaves that would sit below the waterline. Coleus cuttings root easily in water, so harvested stems can serve double duty as both decoration and propagation material. Regular harvesting actually benefits the plant by promoting denser, more compact growth.
We count the days and tell you when to pick
Tell us when you planted and PlotMyGarden tracks the 50-day countdown to harvest, then pings you the day your Coleus is ready.
Storage & Preservation
Coleus is best enjoyed fresh rather than dried, as the vibrant leaf colors fade significantly when preserved. For overwintering, take four to six inch stem cuttings in late summer, root them in water or moist perlite, and grow them indoors on a bright windowsill. Press individual colorful leaves between parchment paper in heavy books for craft projects, though colors will mute over time. Rooted cuttings can be maintained all winter and transplanted outdoors the following spring.
What goes wrong — and the fix
Downy Mildew
DiseaseBrown or gray spots on leaves, sudden leaf drop, stunted growth, and grayish fuzz on leaf undersides in humid conditions.
Mealybugs
PestWhite cottony masses at leaf axils and on stems, sticky honeydew on leaves, yellowing and wilting foliage.
Slugs and Snails
PestIrregular holes chewed in leaves, particularly on lower foliage. Silvery slime trails visible on and around plants in the morning.
Troubleshooting Common Problems
The most common issue is leggy, sparse growth caused by insufficient pinching or too much shade for sun-loving varieties. Flower spikes left unpinched cause plants to become tall and sparse. Coleus downy mildew has become a serious problem in recent years, causing sudden wilting and death. Overwatering leads to root rot, while underwatering causes wilting and leaf drop. Cold temperatures below 50 degrees Fahrenheit cause leaf discoloration and plant decline.
Growing Tips
- Start coleus seeds indoors 10-12 weeks before the last frost date. The seeds are extremely fine and need light to germinate, so press them gently onto the surface of moist seed-starting mix without covering. Maintain a soil temperature of 22-25°C (72-77°F) for best germination rates.
- Propagate coleus effortlessly from stem cuttings by snipping 10-15 cm sections just below a leaf node, removing the lower leaves, and placing the stems in a jar of clean water. Change the water every few days and pot up the cuttings once roots are 3-5 cm long.
- Pinch the growing tips regularly, starting when plants have 4-6 sets of leaves, to create full, bushy specimens. Each pinch point will produce two new branches, so consistent pinching transforms a single-stemmed plant into a dense, multi-branched mound of foliage.
- Remove flower spikes as soon as they appear by pinching them off at the base. Flowering redirects the plant's energy away from foliage production and can cause the overall growth habit to become leggy and open, diminishing the ornamental display.
- Water coleus consistently, keeping the soil evenly moist but never waterlogged. Coleus wilts dramatically when drought-stressed, though it typically recovers quickly after watering. Mulching around plants helps maintain consistent soil moisture levels throughout the summer.
- Choose sun-tolerant cultivar series such as ColorBlaze, Under the Sea, or Mainstreet for full-sun locations. Traditional coleus varieties still perform best in partial shade with 3-4 hours of morning sun and afternoon protection from intense heat.
- Feed coleus every two weeks with a balanced liquid fertilizer during the active growing season. Avoid high-nitrogen fertilizers which can promote rapid but weak growth with washed-out leaf colors. A balanced 10-10-10 or 20-20-20 formula works well for most cultivars.
- Bring coleus indoors before the first fall frost by potting up garden plants or rooting fresh cuttings. Place them in a bright location with temperatures above 15°C (60°F) and moderate humidity. Reduce watering and stop fertilizing during winter to allow a natural rest period.
- Experiment with coleus in mixed containers by combining upright varieties as thrillers, mounding types as fillers, and trailing cultivars as spillers. The vast range of leaf colors and patterns available makes coleus ideal for creating cohesive container designs without relying on flowers.
- Monitor for common pests including mealybugs, aphids, whiteflies, and spider mites, especially on indoor plants and during periods of environmental stress. Treat infestations early with insecticidal soap, neem oil, or a strong spray of water to dislodge the pests before populations build.
Pick your Coleus
Wizard Mix
A compact seed-grown series reaching twelve to fourteen inches with large, heart-shaped leaves in a wide range of bold color patterns, ideal for bedding.
Kong Series
Extra-large leaves up to six inches across on vigorous eighteen to twenty-four inch plants in dramatic color combinations, best in shade to part sun.
ColorBlaze Royale Cherry Brandy
A sun-tolerant vegetatively propagated variety with deep burgundy-red leaves edged in bright pink, excellent heat and sun tolerance.
Under the Sea Series
Unique varieties with ruffled, lobed, or serrated leaves resembling sea creatures, offering unusual textures in vibrant color combinations.
Coleus is one of the most economical ornamental plants to grow due to its extraordinarily easy propagation from cuttings. A single $4-6 nursery plant can provide unlimited cuttings throughout the growing season, with each cutting rooting in water within 7-10 days. A gardener starting with just two or three plants can produce 50-100 new plants in a single season at no additional cost. Compared to purchasing bedding plants at $3-5 each, propagating your own coleus from a few mother plants can save $150-500 or more when filling garden beds and containers. Overwintering cuttings indoors eliminates the need to repurchase plants each spring, making coleus one of the most budget-friendly choices for adding season-long color to the garden.
Quick recipes
Coleus Leaf Wraps (Traditional Southeast Asian)
15 minutesIn parts of Indonesia and Malaysia, large coleus leaves are sometimes used as edible wraps for sticky rice and savory fillings, similar to how banana leaves are used. The mild, slightly minty flavor of the leaves adds a subtle herbal note. Use only organically grown, unsprayed coleus leaves and consume in moderation.
7 ingredients
Coleus and Herb Infused Garden Tea
10 minutesA gentle herbal tea blending mild coleus leaves with more robust garden herbs for a soothing warm drink. The coleus contributes a subtle earthy, slightly minty undertone. This recipe uses a small amount of coleus as a complement to traditional tea herbs rather than as the primary ingredient.
6 ingredients
Coleus Leaf Tempura Garnish
20 minutesColorful coleus leaves dipped in a light tempura batter and quickly fried make a visually stunning edible garnish for salads and appetizer plates. The frying process mellows the leaf flavor while preserving some of the vibrant color patterns. Choose leaves with the most dramatic markings for the best visual impact.
7 ingredientsWhat's inside
Health Benefits
- Contains rosmarinic acid, a polyphenol with documented anti-inflammatory and antioxidant properties that may help reduce oxidative stress and support overall cellular health
- Traditional Southeast Asian medicine has used coleus leaf preparations to treat minor digestive complaints including bloating, indigestion, and mild stomach discomfort
- The related species Coleus forskohlii produces forskolin, a compound that has been studied for its potential effects on metabolism, blood pressure regulation, and respiratory function
- Coleus leaves contain flavonoid compounds including luteolin and apigenin, which have demonstrated antioxidant activity in laboratory studies and may contribute to cellular protection
- As a foliage plant, coleus provides documented mental health benefits associated with caring for living plants, including reduced stress levels, improved mood, and enhanced feelings of well-being
- Growing coleus and other ornamental plants indoors can contribute to improved indoor air quality by increasing humidity and filtering certain airborne compounds through natural biological processes
Where Coleus comes from
Coleus (Plectranthus scutellarioides, syn. Coleus scutellarioides) is native to the tropical and subtropical regions of Southeast Asia, with its center of diversity stretching from Indonesia and Malaysia through the Philippines and into northern Australia. In its native habitat, coleus grows as an evergreen perennial in the dappled shade of tropical forest understories and along riverbanks, where warm temperatures and consistent moisture support year-round growth. The plant has been cultivated for centuries by indigenous peoples of Southeast Asia, who valued it for both ornamental and traditional medicinal purposes. Dutch botanists first brought coleus specimens from Java to European botanical gardens in the 1850s, and the plant's spectacular foliage immediately captivated Victorian-era horticulturists. By the 1860s and 1870s, coleus had become one of the most fashionable bedding plants in Europe and North America, featured prominently in the elaborate carpet bedding schemes that defined Victorian garden design. Plant breeders of this period developed dozens of named cultivars through careful selection, establishing many of the color patterns still recognizable in modern varieties. Interest in coleus waned somewhat during the early twentieth century as gardening tastes shifted away from formal bedding displays toward more naturalistic plantings. However, a dramatic renaissance began in the 1990s and 2000s when breeders introduced revolutionary sun-tolerant cultivars that vastly expanded the plant's versatility. Modern breeding programs, particularly those utilizing vegetative propagation rather than seed production, have produced hundreds of named cultivars with an astonishing array of leaf shapes, sizes, colors, and patterns. Today coleus ranks among the top-selling ornamental foliage plants worldwide, prized equally for container gardening, landscape bedding, and indoor houseplant culture.
Coleus: did you know?
Fascinating facts about Coleus
Coleus belongs to the mint family (Lamiaceae) and is closely related to herbs like basil, oregano, and rosemary. Its square stems and opposite leaf arrangement are telltale signs of its mint family heritage.
Coleus questions, answered
When should I plant Coleus?
What are good companion plants for Coleus?
What hardiness zones can Coleus grow in?
How much sun does Coleus need?
How far apart should I space Coleus?
What pests and diseases affect Coleus?
How do I store Coleus after harvest?
What are the best Coleus varieties to grow?
What soil does Coleus need?
Can coleus grow in full sun or does it need shade?
Why is my coleus losing its vibrant leaf color?
How do I overwinter coleus plants indoors?
Is coleus toxic to cats, dogs, or other pets?
Why is my coleus wilting even though the soil is moist?
Can I grow coleus from seed, or is it better to buy plants?
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Everything that makes Coleus fiddly — the timing, the spacing, the companions, the harvest window — is exactly what PlotMyGarden handles for you, for every plant in your garden.
A plan that knows your weather
Set your location once. Get sow, feed and harvest dates built around your real last-frost date and live forecast — no more guessing from a generic seed packet.
From the “When to plant” sectionDrag-and-drop bed planner
Design beds on a grid. Every plant snaps to its proper spacing, and you can see your whole season laid out before you spend a cent on seed.
From the “Growing guide” sectionCompanion conflicts, caught early
200+ good-and-bad pairings checked live as you plant — so a season-wrecking mistake never makes it into the ground.
From the “Companions” sectionReminders you'll actually act on
“Water the beans.” “Pick today before it turns.” Timely, specific, and tied to the plants you're really growing.
From the “Harvest” sectionSuccession, scheduled
Want a harvest for six weeks, not six days? It spaces your sowings automatically and reminds you when each new block is due.
From the “When to plant” sectionA record that gets smarter
Every harvest you log teaches it your garden. Next year's plan starts from what actually worked in your soil, not a textbook's.
From the “Overview” sectionPlant these alongside Coleus
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