Coleus scutellarioides, commonly known as coleus, is a species of flowering plant in the family Lamiaceae (the mint or deadnettle family), native to southeast Asia through to Australia. Typically growing to 60–75 cm (24–30 in) tall and wide, it is a bushy, woody-based evergreen perennial, widely grown for the highly decorative variegated leaves found in cultivated varieties. Another common name is painted nettle, reflecting its relationship to deadnettles (Lamium species), which are in the same family. (True nettles and their close kin are in the family Urticaceae.) The synonyms Coleus blumei, Plectranthus scutellarioides and Solenostemon scutellarioides are also widely used for this species.
The common coleus, scientifically known as Coleus scutellarioides, is sometimes referred to as Plectranthus amboinicus. Plants from this genus are well-known for their vibrant and colorful leaves, particularly Coleus scutellarioides. Because of this feature, the name "Coleus" is often used in their common names. Among the species in the Coleus genus, this particular plant is the most popular, which is why it is commonly called "common coleus."
Coleus is generally resistant to disease and usually not prone to illnesses. However, it can be vulnerable to leaf spots when light and ventilation are poor or when watering is excessive. The plant’s care level is considered easy since it mainly needs regular watering and little else. Coleus is suitable for people who do not have much time or energy to spend on regular care.
How to keep Coleus Scutellarioides.
Light
Coleus grows best with a moderate amount of sunlight each day, although it tolerates exposure to intense sun. Native to environments with moderate daylight, coleus withstands strong light periods well, but too little sun results in weak growth.
Water
The common coleus plant thrives in high humidity and needs consistently moist soil, as it does not tolerate drought well. To maintain its lush foliage, it's best to water the plant weekly. When grown indoors as an ornamental plant, coleus benefits from added humidity. This can be achieved by misting the plant regularly or placing it on a tray filled with water and pebbles, which is especially important during the dry winter months.
Humidity
This plant will thrive in moderate humidity, which is probably the level in your home. However, misting it a few times a week can be very beneficial. Make sure the room has good ventilation.
Temperature
Coleus originates from warm, tropical areas and prefers temperatures of 68 to 100 ℉ (20 to 38 ℃). In cooler months, make sure the temperature does not drop below 60 ℉ (15.5 ℃) to prevent harm to the plant. During hotter periods, provide some shade to protect it from excessive heat.
Fertilizer
Coleus needs the greatest amount of fertilizer during its active growth phase, which occurs mainly in spring, summer, and early fall. Fertilization supplies essential nutrients the soil may be lacking, supporting healthy root and stem development and encouraging attractive foliage, which is a key feature of this plant.
Pruning
To keep common coleus healthy and attractive, it's important to regularly prune the plant from early to late spring. This encourages bushier growth and helps maintain its shape. Be sure to trim any leggy stems and pinch off flower buds. Always use sterilized tools to prevent the spread of disease. Regular pruning not only enhances airflow but also reduces pests, contributing to the overall health of the plant.
Pot & Repot
When repotting Coleus, select a pot 1–2 inches (2.5–5.1 cm) larger that has good drainage. Use a well-draining potting mix. Repot in spring or fall, making sure the root ball sits slightly lower than the rim of the pot. Water thoroughly after repotting and put the plant in a warm place with indirect sunlight.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial, Annual
- Genus
- Coleus
- Family
- Lamiaceae
- Hardiness Zone
- 9-11
- Mature Height
- 61 cm to 91 cm
- Mature Spread
- 1 cm to 1 cm
- Leaf Color
- Green, White, Red, Gold, Orange, Purple, Brown
- Leaf Type
- Evergreen
- Flower Color
- Lavender
- Flower Size
- 0.76 cm to 1.02 cm
- Bloom Time
- Mid spring, Late spring, Summer, Early fall
- Planting Time
- Spring, Summer, Autumn
- Harvest Time
- Summer, Fall
- Native Area
- Sri Lanka, India, Malaysia, Indonesia, Vietnam, Myanmar, Philippines, Thailand, China
