Othonna capensis, commonly known as ‘Ruby Necklace,’ is a trailing succulent noted for its slender, bead-like leaves that blush red in bright light. This charming plant is a favorite for hanging baskets and shelves, offering a cascade of vibrant color with minimal fuss. Its unique appearance and easy-going nature make it a standout in any succulent collection.
If you’re looking for a plant that is both beautiful and resilient, the Ruby Necklace is an excellent choice. This guide covers everything you need to know to care for your Othonna capensis, from ideal lighting conditions to propagation techniques. You’ll learn how to keep it thriving and showing off its best ruby hues.
Othonna Capensis
Othonna capensis is a member of the Asteraceae family, hailing from the dry regions of South Africa. It’s a perennial, evergreen succulent that grows as a ground cover in its native habitat. In cultivation, it’s prized for its long, trailing stems that can reach several feet in length, making it perfect for containers.
The most distinctive feature are its leaves. They are small, cylindrical, and shaped like beans or beads, storing water to help the plant survive drought. When given plenty of sunlight, these green beads develop a stunning reddish-purple or ruby color, hence the common name. It also produces small, yellow, daisy-like flowers that contrast beautifully with the foliage.
Botanical Profile And Origins
Understanding where this plant comes from helps you replicate its preferred conditions. Native to the Eastern Cape of South Africa, it thrives in rocky, well-drained soils with lots of sun. It’s adapted to periods of drought followed by rain, which informs its watering needs in your home.
The genus Othonna contains over a hundred species, but *capensis* is one of the most popular for indoor gardeners. It’s not frost-tolerant and is typically grown as a houseplant in most climates, though it can summer outdoors in temperate zones.
Why Choose Ruby Necklace?
There are several reasons this succulent has gained such popularity. First, its visual appeal is undeniable; the trailing stems of colorful beads are uniquely decorative. Second, it’s relatively low-maintenance compared to many houseplants, forgiving of the occasional missed watering.
It’s also a fast grower under the right conditions, quickly filling a pot or basket. Furthermore, it’s non-toxic, making it a safe option for homes with curious pets, though it’s always best to discourage chewing on any plant. Here are its key advantages:
- Striking, colorful foliage that changes with light exposure.
- Excellent trailing habit for vertical interest.
- Drought-tolerant and easy to care for.
- Fast growth and easy to propagate from cuttings.
- Produces cheerful yellow flowers.
- Pet-friendly (non-toxic).
Complete Care Guide For Your Plant
Caring for Othonna capensis is straightforward once you understand its basic needs. The core principles mimic its natural habitat: lots of light, careful watering, and well-draining soil. Neglecting these fundamentals is the most common cause of problems.
Light Requirements For Optimal Color
Light is the most critical factor for a vibrant Ruby Necklace. This plant needs bright, direct light to develop its signature ruby red color. Without sufficient light, the stems will become leggy as they stretch for the sun, and the leaves will remain green.
A south or west-facing window is ideal. If grown outdoors, aim for full sun to partial shade. In very hot climates, some afternoon shade can prevent leaf scorch. If you only have lower light, consider supplementing with a grow light to maintain compact growth and intense coloration.
Signs of Insufficient Light
Your plant will tell you if it needs more sun. Look for elongated spaces between the leaves on the stem (etiolation), a general pale or green color instead of red, and slower growth. If you notice these signs, gradually move it to a brighter location to avoid shocking it.
Watering Schedule And Techniques
As a succulent, Othonna capensis stores water in its leaves and is prone to rot if overwatered. The golden rule is “soak and dry.” Water thoroughly until water runs out of the drainage holes, then allow the soil to dry out completely before watering again.
In spring and summer during active growth, this might mean watering every 7-10 days. In fall and winter, when growth slows, you may only need to water every 3-4 weeks. Always check the soil moisture first; the top inch or two should be bone dry. It’s better to underwater than overwater this plant.
- Use the “finger test”: Stick your finger into the soil up to the first knuckle. If it feels dry, it’s time to water.
- Water deeply and directly at the soil level, avoiding the leaves and stems.
- Ensure your pot has excellent drainage holes.
- Reduce watering frequency significantly in cooler, darker winter months.
Soil And Potting Mix Formula
The right soil is your best defense against root rot. Othonna capensis requires a very well-draining, gritty mix. A standard cactus or succulent potting mix is a good start, but you can improve it for even better drainage.
A simple DIY mix consists of two parts cactus soil to one part perlite or pumice and one part coarse sand. This creates an airy, fast-draining environment that mimics its native rocky soil. Avoid heavy, moisture-retentive soils like standard potting mix or garden soil.
Temperature And Humidity Preferences
This plant prefers average to warm temperatures, similar to most common houseplants. Ideal temperatures range from 70°F to 80°F (21°C to 27°C) during the growing season. It can tolerate temperatures down to about 50°F (10°C) but should be protected from frost.
Humidity is not a major concern. Average household humidity is perfectly fine. It does not require high humidity like some tropical plants, and in fact, good air flow in drier conditions helps prevent fungal issues.
Fertilizing For Healthy Growth
Fertilizing is simple. Feed your Othonna capensis sparingly during its active growing season (spring and summer). Use a balanced, water-soluble fertilizer diluted to half strength, or a fertilizer specifically formulated for succulents.
Applying fertilizer once a month is sufficient. Do not fertilize in the fall and winter when the plant is not actively growing, as this can lead to weak growth and salt buildup in the soil. Over-fertilizing can cause more harm than good, leading to burnt roots.
Propagation and Repotting
One of the joys of Othonna capensis is how easily it propagates. You can create many new plants from a single parent. Repotting is also occasionally needed to refresh the soil or give the plant more room to grow.
How To Propagate From Stem Cuttings
Propagation by stem cuttings is the fastest and most reliable method. You can do this any time of year, but success is highest in spring or summer. Follow these steps:
- Select a healthy stem with plump leaves. Using a clean, sharp pair of scissors or knife, cut a piece that is 3-6 inches long.
- Gently remove a few of the lower leaves from the cut end to expose a node (the point on the stem where leaves grow). This is where roots will form.
- Allow the cutting to callous over by letting it sit in a dry, shaded spot for 1-3 days. This prevents rot when planted.
- Place the calloused cutting on top of well-draining succulent soil. You can lightly press the stem into the soil, but do not bury it deeply.
- Place the pot in bright, indirect light. Mist the soil lightly every few days to provide slight moisture. Roots should begin to form within 2-4 weeks.
- Once you feel resistance when giving the cutting a gentle tug, roots have established. Begin watering normally using the “soak and dry” method.
When And How To Repot
Repot your Ruby Necklace every 2-3 years, or when you see roots growing out of the drainage holes. The best time to repot is in the spring. Choose a new pot that is only 1-2 inches larger in diameter than the old one; too large a pot holds excess moisture.
Gently remove the plant, shake off the old soil, and inspect the roots. Trim any black or mushy roots with sterile tools. Place the plant in the new pot with fresh succulent mix, fill in around the roots, and wait a week before watering to let any disturbed roots heal.
Common Problems and Solutions
Even with good care, you might encounter some issues. Most are related to watering, light, or pests. Early identification is key to saving your plant.
Identifying And Treating Pests
Othonna capensis can occasionally attract common houseplant pests. Mealybugs are the most frequent nuisance, appearing as small, white, cottony masses in leaf joints. Aphids and fungus gnats can also be a problem.
For mealybugs and aphids, wipe the stems and leaves with a cotton swab dipped in rubbing alcohol. For persistent infestations, use an insecticidal soap or neem oil spray, applying it thoroughly. For fungus gnats, let the soil dry out more between waterings and use yellow sticky traps.
Addressing Leaf Drop And Leggy Growth
Leaf drop is often a sign of stress, usually from overwatering or underwatering. Check your soil moisture and adjust your schedule. If the stems are dropping leaves from the base while the top looks okay, this can be a natural part of aging, but check for root health.
Leggy growth, with long stretches of stem between leaves, is a sure sign of insufficient light. Prune back the leggy stems to encourage bushier growth and move the plant to a much brighter location. The cuttings you prune can be used for propagation.
Preventing And Managing Root Rot
Root rot is the most serious threat and is caused by consistently wet soil. Symptoms include black, mushy stems at the base, yellowing leaves that fall off easily, and a general wilted appearance despite wet soil.
If you suspect rot, act quickly. Remove the plant from its pot and wash the roots. Cut away all dark, soft roots with a sterile tool. Repot the plant in fresh, dry succulent mix and do not water for at least a week. In severe cases, you may need to take healthy stem cuttings to save the plant.
Design Ideas and Companion Plants
The trailing form of Othonna capensis makes it incredibly versatile in design. Its vibrant color provides a beautiful contrast to other plants and container materials.
Using Ruby Necklace In Hanging Baskets
This is the classic and most effective display method. Plant it in a hanging basket by itself for a dramatic cascade of ruby beads. Ensure the basket has a liner that allows drainage or use a plastic pot with holes inside a decorative basket.
Hang it in a bright window, on a porch, or under a covered patio where it will receive ample light. The stems can eventually trail several feet, creating a living curtain of color.
Creating Stunning Succulent Arrangements
Othonna capensis is a fantastic “spiller” element in mixed succulent pots. Combine it with upright succulents like Echeveria or Haworthia (the “thrillers”) and low-growing fillers like Sedum. The red-purple leaves complement the blues, greens, and silvers of other succulents beautifully.
When planting in arrangements, ensure all plants have similar light and water needs. Plant the Ruby Necklace near the edge of the pot so its stems can trail over the side freely.
Frequently Asked Questions
Is Othonna Capensis Toxic To Cats Or Dogs?
No, according to the ASPCA and other sources, Othonna capensis is considered non-toxic to both cats and dogs. However, it’s still wise to place it out of reach to prevent any gastrointestinal upset from ingesting plant material.
Why Is My Ruby Necklace Plant Not Turning Red?
If your Othonna capensis remains green, it is not receiving enough direct sunlight. The red pigmentation is a stress response to protect the leaves from intense light. Move it gradually to a brighter spot, such as a south-facing window, and you should see the color develop within a few weeks.
How Often Should I Water My Othonna Capensis?
There is no fixed schedule. Watering frequency depends on light, temperature, and pot size. Always use the “soak and dry” method: water deeply only when the soil is completely dry. This may be weekly in hot, sunny weather or monthly in cool, low-light conditions.
Can Othonna Capensis Grow Indoors?
Yes, it is an excellent indoor plant provided it gets enough light. A bright, sunny windowsill is essential. It thrives in the stable temperatures of a home and can be grown indoors year-round, or moved outside during the warm summer months for a boost.
What’s The Difference Between Othonna Capensis And String Of Rubies?
They are the same plant. “String of Rubies” and “Ruby Necklace” are common names for Othonna capensis. Sometimes you might see it called “Little Pickles” due to the shape of its leaves, though this name is less common.