Euphorbia lactea
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Euphorbia lactea

Candelabra-cactus · Coral Cactus · Mottled spurge · African milk tree · False cactus

Tier 1 Difficulty: easy Water: low Light: full_sun Toxicity: high
Water every
7 days
Temperature
20–37 °C
Soil pH
6–7
Hardiness
Zone 10–12
Click count
957
Observations
1,869

Description

Source: leafsnap

Euphorbia lactea is a succulent plant belonging to the Euphorbia family, commonly known as the mottled spurge or candelabra cactus because of its unique branching pattern, which resembles a candelabra. Native to Madagascar and India, this plant can now be found in various parts of the world. The Euphorbia lactea features thick, fleshy stems that are green with white or pinkish stripes. These stems can grow up to 6 feet tall and 3 inches in diameter. The plant has small leaves that fall off quickly and produces small yellow-green flowers during the spring and summer. This succulent requires bright light but should be shielded from direct sunlight during the hot summer months to prevent sunburn on its leaves. It prefers well-draining soil and should be watered sparingly, allowing the soil to dry out between watering sessions. Euphorbia lactea has been used for medicinal purposes for centuries due to its anti-inflammatory properties. However, it should be handled with care, as it produces a toxic milky sap when cut or broken. This sap can cause skin irritation or even blindness if ingested. Overall, Euphorbia lactea is an attractive addition for any indoor garden enthusiast seeking an easy-to-care-for succulent with unique branching patterns and interesting foliage coloration.

💡 Despite its cactus-like appearance and the common name "Coral Cactus," the mottled spurge is not actually a cactus. This succulent belongs to the genus Euphorbia, which includes plants known as spurges. All Euphorbias are highly poisonous. If you cultivate mottled spurge as a houseplant or in your garden, be cautious not to touch its milky sap, as the toxins it contains can cause skin irritation.

🌳 The candelabra cactus is frequently valued not for usual purposes like food or medicine but for its striking, candelabrum-like appearance, which makes it a popular ornamental among collectors of exotic houseplants. The stems’ intricate, mottled markings are prized in the horticultural trade, and the crested variety, especially, is sought after for its distinctive, bizarre shapes that lend a dramatic accent to indoor spaces.

🎭 Cleanliness, safeguarding and insight

Care Guide

💧 Water Every 7 days

Mottled spurge, which originates from dry environments, is a drought-tolerant plant that prefers minimal moisture. It should be watered every three weeks. As an indoor plant, it thrives in containers filled with well-draining soil to prevent root rot, mimicking its natural arid habitat.

Suggested frequency: Every 7 days
FAQ
What should I do if I give too much or too little water to my Mottled spurge plant?

Mottled spurge and other succulents can withstand extended periods without water, so it's uncommon to find them suffering from underwatering. However, if you forget to water your Mottled spurge for a month or more, you may notice it looking thirsty with leaf damage. The signs of underwatering are shriveled, dry, and flat leaves that may have turned brown and crispy or fallen off the plant. The soil will also be completely dried out. To remedy underwatering, submerge the pot in water for 5-10 minutes until you feel moisture on the soil surface. Remove any dried out leaves to make room for new growth. On the other hand, overwatering is dangerous for Mottled spurge and can be fatal if not addressed. Excessive moisture leads to root rot, preventing the roots from absorbing nutrients and water. Root rot occurs when fungi and bacteria thrive in wet soil. Symptoms of overwatering include yellow, swollen, and translucent leaves that may burst open. If left untreated, leaves may turn brown or black and easily fall off. Check the soil to confirm if overwatering is the issue. Saving an overwatered plant is challenging but possible if caught early. Remove the plant from its pot, rinse the roots in room-temperature water to remove fungus, and assess their health. Dark brown or black, soft, mushy, or slimy roots indicate root rot. If most of the roots are affected, it might not be salvageable, but if only some roots are rotted, there's a chance it can be saved. Cut off unhealthy roots with a sterilized tool, dip the remaining healthy roots in a fungicide, and repot in fresh, well-draining soil. Most succulents can recover with new growth in the next growing season.

How frequently should I water my Mottled spurge plant?

Determining how often to water Mottled spurge does not have a strict rule. The best way is to check the soil and only water when it is completely dry. To do this, you can stick your finger in the pot or use a moisture meter to check the soil beneath the surface. If you are using a deep pot, you can use a stick or chopstick to check the moisture. If it feels even slightly moist, wait a few more days and check again. Generally, most people will need to water Mottled spurge approximately every two weeks during summer and once a month in winter. However, there are various factors that can affect the watering frequency. The section below provides some considerations that can help you determine how often you should water the plant.

What do I need to think about when watering my Mottled spurge plant?

To properly water your Mottled spurge, you need to consider several environmental conditions, such as container size, soil type, temperature, and humidity. The container and soil you choose will determine the frequency and amount of water needed. Make sure the container has drainage holes to prevent excess water from pooling. A small container holds less moisture, so it needs to be watered more often, while a larger pot retains moisture and requires less frequent watering. Avoid using an oversized pot as it can lead to overwatering. When repotting, choose a slightly larger container than the current one. Since Mottled spurge has shallow roots, a shallow container works better than a deep one. The watering needs of Mottled spurge vary throughout the year. During winter, when growth slows down and less energy and water are consumed, watering should be reduced. The cooler winter air retains moisture in the soil for longer, so watering is not required as frequently as in summer. Your location's climate also plays a role. If you live in a humid and rainy area, you will need to water less often compared to a dry and arid climate. Keep in mind that the same geographic location can have different conditions depending on the season and indoor heating or air conditioning. If you have planted Mottled spurge in the ground, it generally does not require supplemental watering once its roots are established. It can rely on natural precipitation and dew. However, during long dry periods, occasional watering may be necessary. In areas where Mottled spurge can only be grown in a container, you can move the plant outside during spring and summer when the temperature is suitable and bring it back indoors as temperatures drop. Remember that a potted Mottled spurge kept outside will require more water due to increased sun exposure, even if it is placed on a shaded porch.

How should I water Mottled spurge?

To effectively water Mottled spurge, soak the plant thoroughly and allow it to dry out before watering again. This plant can tolerate some drought, so it's okay to let it get quite dry before watering. It's always better to give too little water rather than too much. When watering, ensure that the soil in the entire pot is thoroughly soaked. Avoid pouring water in just one spot; instead, try to go around the entire rim of the planter so that all sides of the plant get wet. The amount of water needed depends on the container size and how much water the soil absorbs. Provide enough water so that it drains out from the drainage holes. Ideally, leave the drained water in the saucer for about 20-30 minutes to absorb into dry pockets of soil. Afterward, discard any excess water to prevent waterlogging. Another effective method is bottom-watering. Place the pot in a saucer of water and let the soil absorb moisture through the drainage holes. You'll know the soil has enough water when the top layer is moist. This method takes longer but ensures even water distribution throughout the pot. In its natural habitat, the Mottled spurge experiences a relatively dry environment with sporadic rain that thoroughly moistens the soil. You can replicate this by bottom-watering your plant when the soil is completely dry. Deep soil bathing is better than frequent light watering for Mottled spurge.

☀️ Light Full sun

The candelabra cactus grows best in spots with plenty of light. Too much light can scorch its foliage, while too little can cause leggy, stretched growth. Coming from a habitat with abundant overhead light, it can also tolerate situations where it gets sunlight only part of the day.

Ideal: Full sun
FAQ
What are the sunlight requirements for Mottled Spurge?

Mottled Spurge requires full sun to thrive, meaning it needs more than 6 hours of sunlight daily. However, it can also survive under partial sun conditions, which is about 3-6 hours of sunlight. It is important to observe how sunlight moves through your garden to ensure that your plants receive the right balance of light and shade, promoting their optimal growth.

What should I consider about sunlight exposure for Mottled Spurge?

Mottled Spurge thrives in areas with plenty of light exposure. Too much sunlight can scorch its foliage, while insufficient light may cause leggy growth. Originating from bright habitats, this plant adapts well even when sunlight is only available for part of the day. For indoor plants not getting enough natural light, particularly during winter or in darker spaces, artificial lighting can be a beneficial alternative. Using LED lights, which provide specific light wavelengths, can help. Full sun plants typically need 30-50W/sq ft of artificial light, partial sun plants need 20-30W/sq ft, and full shade plants require 10-20W/sq ft. The artificial light should be placed 12-36 inches above the plant, for 8-12 hours per day, mimicking natural daylight hours as closely as possible.

What are the symptoms of insufficient or excessive light in Mottled Spurge?

Mottled Spurge may display several symptoms when the lighting is not optimal. Insufficient light can lead to leggy or sparse growth, faster leaf drop, and potentially weak plants that are prone to breakage. On the other hand, too much light can cause chlorosis, where leaves lose their green color, sunscald with pale or necrotic areas on the plant, leaf curling as a defense mechanism against excessive sunlight, wilting due to increased water loss, and leaf scorching characterized by brown, crispy edges on leaves. These symptoms indicate the plant's struggle with its current light conditions.

How can I address lighting issues for Mottled Spurge?

To optimize growth for Mottled Spurge struggling with lighting issues, gradually increase sunlight exposure by moving plants to sunnier locations each week until they receive at least 6 hours of direct sunlight daily. For indoor plants, consider using artificial light, like grow lights, for at least 8 hours a day if they're too large to move easily. For outdoor plants, ensure a gradual adaptation to avoid sunburn. If obstructions like trees block sunlight, pruning may help. For smaller plants that can be moved, transplanting during their dormant period to a sunnier spot with good drainage might be beneficial. Remember, parts of the plant damaged by insufficient sunlight might not recover, but new growth should be healthy with improved light conditions.

🌡️ Temperature 20–37.8°C

The candelabra cactus originates from tropical and subtropical areas and thrives in temperatures between 68 and 100°F (20 to 38°C). During the summer months it may require shading or occasional misting to prevent heat stress. In winter the plant can tolerate cooler temperatures but should not be exposed to frost.

Ideal temperature: 20–37.8°C
FAQ
What is the ideal temperature range for Mottled spurge?

Mottled spurge thrives in a temperature range of 68 to 100°F (20 to 38°C), favoring the climate of tropical and subtropical regions. During the hot summer months, measures such as shading or periodic misting might be necessary to prevent heat stress, whereas, in winter, the plant can withstand cooler temperatures but must be kept away from frost. As the outdoor temperature drops below its minimum tolerable growing temperature, it's suggested to move the plant indoors, near a south-facing window for ample sunlight, or provide supplemental lighting if natural light is insufficient. Watering should be reduced or ceased entirely when temperature falls further to avoid root rot.

How do I care for Mottled spurge in varying temperatures?

For optimal growth, keep Mottled spurge above its suitable growth temperature minimum. In winter, ensure the temperature remains above its tolerable growing temperature minimum. If the temperature dips below its limit for growth, the plant might weaken, wilt, and become susceptible to root rot. For mild frost damage, trim off the affected areas, check for root rot, and propagate if necessary. Move the plant to a warm place with plenty of sunlight, using supplemental lighting as needed. In contrast, during summer, if the temperature exceeds its maximum tolerable point, remove any sunburned or rotten parts, provide shade from the harshest sunlight, and stop watering to prevent further root rot until recovery.

💨 Humidity normal (40-60%)

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.

Humidity: normal (40-60%)
🪴 Soil 6-7
Soil pH: 6-7
🌱 Fertilizer

Candelabra cactus needs only light fertilizer applications once or twice a year during the growing season. Do not fertilize in winter or summer when it is dormant. Cut back on fertilizer for repotted plants and wait a couple of months after repotting before applying any. Fertilizing helps maintain healthy growth and encourages blooming.

FAQ
Why should I put fertilizer on my Mottled spurge plant?

By fertilizing Mottled spurge, you can provide essential nutrients for its growth. While this plant is capable of storing water and nutrients, applying plant food during the growing season is still beneficial for promoting healthy development. Additionally, fertilizing can stimulate mature specimens to produce beautiful blooms during the growing season.

When should I fertilize my Mottled spurge?

Mottled spurge, like other plants, thrives with extra nutrients. However, it only requires a small amount of fertilizer during the growing season. You should fertilize it 1-2 times a year, ideally in the spring and autumn. Avoid fertilizing it in winter and summer when it is dormant. When repotting, be cautious and reduce the amount of fertilizer used. It's best to wait a few months after repotting before applying any fertilizer.

When is it not a good idea to fertilize my Mottled spurge?

Mottled spurge, like other plants, goes through a dormancy period. During this period, it's important to avoid using fertilizer. The plant stops growing in both summer and winter, so it's best to refrain from fertilizing during these seasons. Additionally, after repotting in the spring, it's recommended to hold off on fertilizing for a few months.

What kind of fertilizer should I use for my Mottled spurge?

When fertilizing Mottled spurge, it's recommended to use a liquid plant food specifically made for succulents and cacti. Make sure to dilute the fertilizer with water, using half the recommended strength. This is important to avoid fertilizer buildup in the soil. Apply the diluted fertilizer to the base of the plant and water it thoroughly. Be sure to allow any excess moisture to drain from the container or absorb into the ground.

How should I fertilize my Mottled spurge plant?

When fertilizing Mottled spurge, you have the option to use liquid plant food or granules. It is recommended to follow the instructions on the packaging, especially when using liquid fertilizers, as you should dilute them to half-strength. Whether you choose granules or liquid plant food, be sure to apply it directly to the soil. For granules, cover them with a thin layer of soil and water. Regardless of the type of plant food, watering the soil is essential.

🪴 Pot & Repot 2-3 years

Repot the candelabra cactus in the warmer months, selecting a pot only slightly bigger than the current one that has good drainage. Use a fast-draining cactus or succulent potting mix. Handle the roots and caudex carefully during the transfer. After repotting, hold off on watering for about a week to avoid root rot. Put the plant in a sunny location for best growth.

Suggested frequency: 2-3 years
✂️ Pruning

Pruning cactus and succulent plants may be done to remove dead or damaged sections or to maintain a specified size or form. Pruning promotes new growth and branching while also providing plant fragments for propagation. Trimming the plant stimulates additional side shoots and decreases the plant's need to establish a bigger root system. This is significant since the roots are in a limited region. Depending on the plant's growth behavior, long succulent leaves may be pruned down to the plant's base. Side stems may be pruned all the way back to the main trunk. If trimming to form, trim smaller segments slightly above the junction. Pups are baby cacti that develop on the parent plant. They may get rather dense on certain cacti. Puppies may be chopped off at a 45-degree angle with a sharp knife. Allow the puppies' cut areas to dry until a callus develops, then place them in damp sand to root and ultimately grow new plants. Some succulents and cacti create "offsets." These are plants that are spread by short rhizomes from the mother plant. These, like puppies, may be cut off at the rhizome and utilized to establish new plants.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Succulent, Shrub
Life Cycle
Perennial
Genus
Euphorbia
Family
Euphorbiaceae
Hardiness Zone
10-12
Mature Height
0.61 m to 4.57 m
Mature Spread
0.61 m to 1.52 m
Leaf Color
Green, Variegated
Leaf Type
Evergreen, Deciduous
Flower Color
White
Flower Size
2.54 cm
Bloom Time
Early spring, Mid spring, Late summer, Fall, Winter
Planting Time
Spring, Summer, Autumn
Harvest Time
Spring, Fall, Winter
Native Area
Sri Lanka, India, Thailand

Tags (15)

Common Names (14)

en Candelabra-cactus
en Coral Cactus
en Mottled spurge
en African milk tree
en False cactus
en Candelabra spurge
en Dragon-bones
en Hat-rack-cactus
en Devil's Walking Stick
en Dragon bone tree
en Elkhorn
en Frilled Fan
en Riñón de Cactus
en African milk bush