Senecio macroglossus — a medium houseplant, prefers full sun light
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Senecio macroglossus

Senecio Macroglossus

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ON THIS PLANT

Senecio macroglossus, commonly known as wax ivy or Cape ivy, is an evergreen vine native to South Africa. Part of the Asteraceae family, this fast-growing plant can reach up to 6 feet in length. It features glossy, succulent, heart-shaped leaves that range in color from green to variegated shades of green and yellow.

Wax ivy is popular as a houseplant due to its attractive foliage and easy care requirements. It thrives in bright, indirect light but can tolerate some shade. The plant needs well-draining soil and should be watered when the top inch of soil feels dry.

Beyond its ornamental value, Senecio macroglossus has been employed in traditional African medicine to treat various ailments, including coughs, colds, fever, headaches, and stomach problems.

However, it is important to note that this plant contains toxic compounds called pyrrolizidine alkaloids, which are harmful if ingested by humans or animals. Therefore, it should be kept out of reach of children and pets.

A note from PlantMom

Wax ivy is fairly resistant to disease and usually does not suffer from illnesses easily. However, it can be vulnerable to pests and diseases present in its surroundings. These problems are typically mild. In terms of care, the plant requires moderate maintenance. It should be pruned regularly to preserve a tidy appearance and support healthy growth. Fertilizing can also help encourage flowering. Wax ivy is suitable for anyone with outdoor space, such as a garden or patio, and does not demand extensive experience in plant care. It may need more attention when grown indoors.

— PlantMom
CARE GUIDE

How to keep Senecio Macroglossus.

Light

Wax ivy does best with plentiful sunlight, echoing the bright conditions of its native habitat. During its growth phases, steady exposure to strong light is helpful. It can also tolerate a moderate amount of sun. Excessive light can cause leaf burn, while too little may hinder growth.

Water

Wax ivy, native to South Africa, is a drought-tolerant plant known for its ability to store moisture in its succulent leaves. It thrives in well-draining soil and dry environments, making it a perfect choice for indoor settings. This evergreen plant requires watering every 1-2 weeks, maintaining its hydration throughout the year.

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

Wax ivy comes from warm regions and does best at temperatures of 68 to 100 °F (20 to 38 °C). For optimal growth, imitate its native environment by adjusting conditions as the seasons change.

Fertilizer

Proper fertilization is essential for Wax ivy's health and appearance. Feed Wax ivy in summer, repeating the feeding monthly throughout the season. Nutrients power growth and help maintain the plant's parts. Fertilizing improves Wax ivy's flower display, ensuring the best blooms.

Pruning

Wax ivy is an evergreen climber known for its waxy leaves. To encourage dense growth and remove weak stems, it is best to prune the plant from early to late spring. Thinning out crowded areas can improve air circulation. Always use clean, sharp tools to avoid damage and disease, and time your pruning to match the plant's growth phase for optimal recovery.

Pot & Repot

Repot wax ivy every 2-3 years during the spring. Use a medium-sized pot that offers good drainage. After repotting, place the plant in indirect light and water it sparingly to help the roots recover. Additionally, keep the waxy leaves clean to maintain optimal health.

CHARACTERISTICS

Botanical profile.

Plant Type
Herb
Life Cycle
Perennial
Genus
Senecio
Family
Asteraceae
Hardiness Zone
10-11
Mature Height
3.05 m
Mature Spread
1.83 m to 2.44 m
Leaf Color
Green
Leaf Type
Evergreen
Flower Color
Yellow, White
Flower Size
5.08 cm to 6.35 cm
Bloom Time
All year round
Planting Time
Winter
Harvest Time
All year round
Native Area
South Africa, Mozambique, Zimbabwe
ALSO KNOWN AS

Other names.

en Natal-ivy en Cape-ivy en Waxvine en Flowering Ivy en Variegated wax ivy en English Ivy en Wax Ivy
FREQUENTLY ASKED

Reader questions.

How should I water my Wax ivy?

To properly water the Wax ivy, it is best to use filtered water that is at room temperature or slightly warmer. Tap water may contain harmful particles, so filtered water is preferred. The Wax ivy is accustomed to a warm environment, so cold water can be a shock to its system. It is important to avoid overhead watering for this plant as it can cause foliage problems. Instead, you should apply filtered, room temperature water directly to the soil until it is fully soaked. This helps to moisten the roots and supports their spread throughout the soil for nutrient collection.

Why is it important to fertilize my Wax ivy?

All plants, including Wax ivy, need soil nutrients for growth. However, it's not guaranteed that the soil will have all the necessary nutrients. That's why fertilization and soil amendments are important in gardens. They ensure that plants receive not only the basic nutrients they need, but also the specific ones required for their growth. For Wax ivy, fertilizer is crucial for healthy root and stem development throughout the growing season. It also helps the plant have beautiful foliage, which is its main ornamental feature.

What are the sunlight requirements for wax ivy?

Wax ivy requires full sun, meaning it thrives in locations that receive more than 6 hours of sunlight per day. However, it can also tolerate partial sun, which is about 3-6 hours of sunlight daily. Observing the natural movement of sunlight through your garden will help you find the ideal balance of light and shade for your plants, ensuring they grow healthy and happy.

What are the ideal temperature conditions for Wax ivy?

Wax ivy, or Senecio macroglossus, thrives in warmer climates, with ideal temperature ranges between 68 to 100 °F (20 to 38 °C). To ensure optimum growth, it is important to replicate its natural habitat by adjusting the environmental conditions as the seasons change. Wax ivy is particularly heat-loving and can be harmed by cold temperatures. In autumn, it is recommended to bring outdoor-grown Wax ivy indoors and place it near a bright window, away from direct heat sources, to maintain temperatures above 20°C during winter. Exposure to temperatures near or below 5°C can be detrimental to the plant.

What should I do if I give my Wax ivy too much or too little water?

Overwatering is a more common problem than underwatering for the health of your Wax ivy. When the plant receives too much water, its stems and leaves may wilt and turn yellow. Overwatering for a long time can lead to diseases like root rot, mold, and mildew, which can kill the plant. Although Wax ivy has good drought tolerance, underwatering is still possible, causing leaves to become brittle and brown. It's important to notice signs of overwatering early to prevent irreversible damage. Reduce watering if you see early signs and check the soil's drainage. Replace poorly draining soil with a loose, well-draining potting mix. If your Wax ivy shows signs of not getting enough water, simply water it more regularly until the signs improve.

When should I fertilize my Wax ivy?

During the active growth phase, which lasts from spring to early fall, a Wax ivy requires the highest amount of fertilizer. Once winter is over, you should feed your Wax ivy every two to four weeks until fall. When fall arrives, gradually reduce the amount of fertilizer given until you stop entirely in preparation for the lower growth during winter.

What are the essentials for growing healthy wax ivy?

Wax ivy flourishes best with abundant sun exposure, reminiscent of its native habitat's conditions. It benefits from continuous exposure to plenty of sunlight during its growth stages but can also manage well with a moderate amount of light. Overexposure might lead to leaf burn, while insufficient light could hamper growth. For indoor plants, especially during winter or in less sunny spaces, artificial lighting can be a great alternative, ensuring optimal growth. LED lights are popular for their ability to provide specific light wavelengths needed by plants. Full sun plants require 30-50W/sq ft of artificial light, partial sun plants 20-30W/sq ft, and full shade plants 10-20W/sq ft. Proper positioning, 12-36 inches above the plant, and mimicking natural daylight hours, usually 8-12 hours per day, are crucial.

How does low temperature affect Wax ivy and what are the solutions?

Wax ivy prefers warm temperatures and does not tolerate cold well. It thrives when temperatures are above 20°C and should be kept above 5°C during winter. Exposure to temperatures below 1°C can cause the leaves to lighten in color. Following frost damage, the leaves may turn brown or black, and the plant may exhibit wilting and drooping. To address this, trim off the frost-damaged parts and move the plant to a warm environment indoors. It's best to place it near a south-facing window for ample sunlight and avoid placing it near heaters or air conditioning vents, which can cause excessive dryness.

How often should I give water to my Wax ivy?

If your Wax ivy is in a pot, the most precise way to check if it needs water is by sticking your finger into the soil. If the first two to three inches of soil are dry, it's time to water it. The same method can be used if you have your Wax ivy planted outdoors. When the top few inches of soil have dried out, it's time to water it. In the spring and early fall, watering once a week using this method is usually enough. However, during extremely hot weather, you may need to water it two or more times a week. It's worth noting that mature, well-established Wax ivy plants can tolerate drought quite well.

When is it best to not put fertilizer on my Wax ivy?

You should regularly feed your Wax ivy throughout most of the year, including spring, summer, and most of the fall. However, be cautious not to over-fertilize or fertilize incorrectly, as this can cause issues like fertilizer burn. Make sure to fix any problems before resuming a regular feeding schedule. The only time you should avoid fertilizing your Wax ivy is during winter, especially if you grow it indoors in cold winters. During this time, the plant enters a dormant phase, and feeding it is not only unnecessary but can also lead to fertilizer burn.

What are the important symptoms of light deficiency in wax ivy?

Wax ivy shows several symptoms when suffering from inadequate lighting. This includes new leaves growing smaller, leggy or sparse growth, faster leaf drop, slower or halted new growth, and lighter-colored or yellowing leaves, indicating a condition known as chlorosis. Excessive sunlight can cause sunscald, leaf curling, wilting, and leaf scorching, which appear as bleached or necrotic areas, curled leaves, drooping stems, and brown, dry patches on the leaves respectively. These symptoms signal either too much or too little light exposure, affecting the plant's health.

How does high temperature affect Wax ivy and what are the solutions?

During summer, it's important to maintain Wax ivy's temperature below 38°C. Temperatures above 43°C can cause the leaves to lighten and increase susceptibility to sunburn. In case of sunburn, trim away the sunburned and dried parts of the plant. Move the plant to a shaded location, particularly to protect it from midday and afternoon sun. Ensure the soil remains moist by watering the plant in the morning and evening.

PLATES
Senecio macroglossus leaf
PLATE 01 · leaf
Senecio macroglossus leaf
PLATE 02 · leaf
Senecio macroglossus flower
PLATE 03 · flower
Senecio macroglossus flower
PLATE 04 · flower
Senecio macroglossus bark
PLATE 05 · bark
Senecio macroglossus habit
PLATE 06 · habit
ALSO IN THE LIBRARY

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