Coleus ‘Ruby Slipper’ is an ornamental plant known for its striking, vibrant foliage. This cultivar offers deep red to burgundy leaves, providing a rich visual impact. Its compact, bushy growth habit makes it ideal as an accent plant or for mass plantings.
Characteristics of Coleus ‘Ruby Slipper’
Coleus ‘Ruby Slipper’ features intensely colored leaves, displaying shades of deep ruby-red to burgundy, sometimes accented by a variable yellow edging. Darker veins often add to its intricate appearance. This variety typically reaches a height of 14 to 24 inches and a spread of 14 to 16 inches, developing an upright, compact, and well-branched form. Its non-flowering or very late-flowering habit ensures a consistent display of its signature hues throughout the growing season.
Cultivating Coleus ‘Ruby Slipper’
Light Requirements
Coleus ‘Ruby Slipper’ thrives in bright, indirect light, tolerating both sun and shade. For optimal color vibrancy, especially deep red tones, morning sun followed by afternoon shade is ideal. Too much direct sun can lead to bleached or dull coloration, while insufficient light may cause foliage to become greener and less vibrant.
Watering Needs
Maintain consistent soil moisture for ‘Ruby Slipper’ coleus. Keep the soil evenly moist but never waterlogged, as this can lead to root issues. Check the soil moisture by feeling the top inch; if it feels dry, it is time to water. Good drainage is essential, particularly for potted plants, to prevent fungal problems. During hot or windy conditions, daily watering or even twice-daily watering may be necessary.
Soil Preferences
This coleus cultivar grows best in rich, well-draining soil. A high-quality potting mix or garden soil amended with organic matter provides an optimal environment. The ideal soil pH ranges from slightly acidic to neutral, typically between 5.8 and 7.0.
Temperature and Humidity
Coleus ‘Ruby Slipper’ prefers warm temperatures, thriving best above 60°F. The optimal range for robust growth is 70°F to 100°F. It is not frost-tolerant; plant outdoors only after all danger of frost has passed and night temperatures are reliably above 60°F. These plants appreciate moderate to high humidity; for indoor plants, use a humidifier or pebble tray.
Fertilization
During the active growing season, ‘Ruby Slipper’ coleus benefits from regular fertilization. Apply a balanced liquid fertilizer at half-strength every two to three weeks. Avoid over-fertilization, as it can lead to faded leaf color and reduced plant vigor. If planted in rich soil, less frequent fertilization may be sufficient.
Pinching and Pruning
Pinching is a fundamental practice for encouraging a bushy, compact form in ‘Ruby Slipper’ coleus and preventing legginess. When the plant is young, pinch off the growing tips. This encourages branching and a denser appearance. Regularly remove any flower spikes, as blooming diverts energy from foliage production, potentially leading to a decline in leaf color and overall plant vigor. Pruning also maintains desired shape and size throughout the growing season.
Propagating Coleus ‘Ruby Slipper’
Propagating Coleus ‘Ruby Slipper’ is a straightforward process, commonly achieved through stem cuttings. Select a healthy, non-flowering stem about 4 to 6 inches long. Make the cut just below a leaf node, where leaves emerge. Remove lower leaves, ensuring no foliage will be submerged if rooting in water. Cuttings can be rooted in water or moist potting mix.
For water rooting, place cuttings in a glass of water, submerging only the leafless portion. Change water every few days. Roots typically develop within two to three weeks.
For soil rooting, insert the cutting into a pot with moistened, well-draining potting mix, ensuring at least one node is below the surface. Covering the pot with a clear plastic bag or dome helps maintain humidity. Once roots are established and new growth appears, transplant the young plants.
Common Problems and Solutions
Coleus ‘Ruby Slipper’ may encounter pests and environmental issues.
- Aphids, mealybugs, and whiteflies are common sap-sucking pests. For minor infestations, a strong spray of water can dislodge them; for severe cases, use insecticidal soap. Regular inspection aids early detection.
- Leggy growth often indicates insufficient light. Increase light exposure or pinch back growth to promote a bushier habit.
- Fading or dull leaf color can result from too much direct sun or over-fertilization.
- Root rot is caused by overwatering or poorly draining soil, leading to wilting and discolored leaves. Ensure good drainage and allow topsoil to dry slightly between waterings.
- Slugs may also cause holes in leaves, especially in damp, shady areas.