Euphorbia bupleurifolia
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Euphorbia bupleurifolia

Pine-cone plant · Rabbit-eared spurge · Cycad Euphorbia

Tier 1 Difficulty: easy Water: low Light: full_sun Toxicity: high
Temperature
20–37 °C
Soil pH
6–7
Hardiness
Zone 5–11
Click count
137
Observations
68

Description

Source: leafsnap

Euphorbia bupleurifolia, commonly known as cycad spurge or pine cone plant, is a species of plant in the family Euphorbiaceae.It is native to southern Africa. It is found in the South African regions of Cape Provinces and KwaZulu-Natal.The Latin specific epithet of bupleurifolia refers to means ‘with leaves like those of the genus Bupleurum’, a large genus in the Apiaceae (carrot family), commonly called Hare's Ear. The genus name Bupleurum is also an ancient Greek word for ‘umbelliferous plant’. It was first described and published in Pl. Hort. Schoenbr. Vol.1 on page 55 in 1797.

🌳 The pine-cone plant maintains a little-known symbiotic relationship with certain insects that rely on it for shelter and food. Those insects, in turn, can act as natural pest controllers, helping to preserve balance in the local ecosystem. The plant’s distinctive shape and the latex it secretes may deter herbivores while simultaneously providing a specialized habitat for its insect associates. This mutual arrangement is a striking illustration of the complex connections in nature that often go unnoticed.

Care Guide

💧 Water

The pine-cone plant is a drought-tolerant succulent native to arid regions. It requires minimal watering, typically every three weeks. It thrives in controlled environments and is often grown indoors. As an evergreen plant, the pine-cone plant efficiently retains moisture throughout the year without shedding its leaves seasonally.

FAQ
What should I do if I give my Pine-cone plant too much or too little water?

Pine-cone plants, along with other succulents, can survive without water for long periods of time. However, if these plants are neglected and not watered for a month or more, they may show signs of thirst and damage from lack of watering. An underwatered Pine-cone plant will appear lacklustre, wrinkled, and some may have completely dried up, turned brown and crispy, or dropped off the plant. The soil will also be completely dried out. To remedy this, you should give the plant plenty of water by submerging the pot entirely in water for 5-10 minutes until you feel moisture on the surface of the soil. On the other hand, overwatering is dangerous for Pine-cone plants and can be fatal if not addressed. Root rot occurs due to excessive moisture, which prevents the roots from absorbing nutrients and water. Wet conditions allow fungi and bacteria to thrive in the soil and feed on the roots, leading to symptoms such as yellow, swollen, and translucent organs. If overwatering continues, the plant may turn brown or black and fall off easily. To save an overwatered plant, it is important to catch the issue early. Remove the plant from its pot, gently remove wet soil, and rinse the roots in room-temperature water to remove any fungi. If the roots are dark brown or black, soft, mushy, or slimy, they have likely developed root rot. If most of the roots are affected, it may not be possible to save the plant. However, if only a portion of the roots are affected, there is a chance of salvation. Remove unhealthy roots, dip the healthy ones in a fungicide, and repot the plant in fresh, well-draining soil. While this does not always guarantee recovery, most Pine-cone plants with root rot can fully recover and grow new growth in the next growing season.

How often do I need to water my Pine-cone plant?

Determining the watering schedule for a Pine-cone plant is not a strict rule. The best approach is to check the soil and only water when it is completely dry. To check the soil moisture, you can either put your finger in the pot or use a moisture meter to examine the soil beneath the surface. If the plant is in a deep pot, you can use a stick or chopstick to do this. If the soil feels slightly damp, it is advisable to wait a few days and check again. In general, during summer, most people will need to water the Pine-cone plant approximately every two weeks, while in winter, watering once a month is usually sufficient. However, keep in mind that various factors can affect the watering frequency. The following section provides some considerations to help determine how often to water the plant.

What should I think about when watering my Pine-cone plant?

The way you water your Pine-cone plant is influenced by various environmental factors such as the size of the container, the type of soil, the temperature, and the humidity. To determine the frequency and amount of water needed, consider the container and soil you are using. Ensure that the container has sufficient drainage holes so that excess water can escape. Smaller containers hold less soil and therefore retain less moisture, while larger pots stay wet longer and require less frequent watering. Avoid using an oversized pot as this can lead to overwatering. When repotting, opt for a container that is just one size larger than the current one. As the Pine-cone plant has shallow root systems, a shallow container is more suitable than a deep one. Regarding seasonal watering, the Pine-cone plant requires less water during winter and more during the active growing seasons of spring and autumn. In winter, the plant's growth slows down significantly, resulting in lower energy and water usage. The cooler air reduces evaporation, causing the soil to stay wet for longer compared to summer. Additionally, the climate of your location also affects watering needs. If you reside in a humid area with plenty of rainfall, you will need to water less frequently compared to living in a dry and arid climate. Keep in mind that conditions can vary within the same geographic location due to different seasons and the use of indoor heating and air conditioning. When planting the Pine-cone plant outdoors in the ground, it typically does not require additional watering once its roots are established. It relies on precipitation and dew for moisture. However, during extended dry spells, occasional watering may be necessary. For areas where the Pine-cone plant can only be grown in containers, it can be moved outside during appropriate temperatures in the spring and summer and brought back indoors as temperatures drop. A potted Pine-cone plant kept outside generally needs more water than the same plant kept indoors due to increased sun exposure, even on a shaded porch.

How do I water a Pine-cone plant?

To properly water your Pine-cone plant, it is best to soak it thoroughly and then allow it to dry out before watering again. This plant can withstand drought, so it's okay to let it become quite dry before giving it water. It is better to give this plant too little water than too much. When watering, make sure to thoroughly soak the soil throughout the entire pot, rather than pouring water in one spot. Also, try to water around the entire rim of the planter to ensure all sides of the plant get wet. The amount of water needed depends on the pot size and how well the soil absorbs it. Water the plant enough so that it drains out from the drainage holes. Leave the drained water in the saucer for about 20-30 minutes to allow it to absorb into dry pockets of soil. Discard any excess water to prevent waterlogging the soil. Another effective watering method for the Pine-cone plant is bottom-watering. This involves placing the pot in a saucer of water and allowing the soil to absorb moisture through the drainage holes. You'll know the soil has absorbed enough water when the top layer is moist. Although it takes a bit more time, bottom-watering ensures an even distribution of water throughout the pot. In its natural habitat, the Pine-cone plant is exposed to relatively dry conditions with occasional heavy rain. You can replicate this by bottom-watering the plant when the soil is completely dry. Deep soil bathing is preferred over frequent light watering for this plant.

☀️ Light Full sun

The pine-cone plant does best in surroundings that receive a plentiful amount of sunlight, although it can tolerate situations with somewhat reduced sun exposure. In its natural habitat, the plant relies on strong sunlight for healthy growth. If placed in excessively shady conditions, it may show stunted development.

Ideal: Full sun
FAQ
What are the sunlight requirements for Pine-cone plants?

Pine-cone plants, known botanically as Euphorbia bupleurifolia, thrive best in environments that receive ample amounts of sunlight, ideally above 6 hours of direct sunlight (full sun) daily. They can also tolerate partial sun conditions, which means about 3-6 hours of sunlight each day. It's crucial for the well-being of these plants to monitor the movement of sunlight through your garden or indoor space to ensure they receive the right balance of light and shade. This careful placement helps in securing their happiness and robust growth.

How should indoor Pine-cone plants be cared for in terms of lighting?

For indoor Pine-cone plants, when natural sunlight is insufficient, artificial lighting becomes essential for optimal growth. LED lights are recommended because they can be customized to emit specific wavelengths needed by the plants. Full sun plants require 30-50W/sq ft of artificial light, partial sun plants need 20-30W/sq ft, and plants adapted to full shade require 10-20W/sq ft. The light source should be placed 12-36 inches above the plant and kept on for 8-12 hours per day to mimic natural daylight hours, ensuring the plants experience faster and healthier growth.

What symptoms indicate a Pine-cone plant is receiving insufficient light?

Pine-cone plants show several symptoms when they're not getting enough light. These include the development of small leaves that are smaller than previous ones once mature, leggy or sparse growth with long spaces between leaves or stems, accelerated leaf drop as the plant attempts to conserve resources, slower or halted growth as the plant enters survival mode, paler new leaves indicating a lack of chlorophyll, and chlorosis where leaves lose their green color and turn yellow. Symptoms like sunscald, leaf curling, wilting, and leaf scorching can also occur due to excessive sunlight exposure, highlighting the plant's distress under improper light conditions.

What solutions can be implemented for Pine-cone plants with insufficient sunlight?

To address insufficient sunlight for Pine-cone plants, a gradual increase in sunlight exposure is crucial. For indoor plants, this can mean moving them to a sunnier location each week until they receive at least 6 hours of direct sunlight, using a south-facing window for maximum exposure, or supplementing with artificial light such as professional grow lights or standard lamps for at least 8 hours daily. Outdoors, it's key to gradually move plants to sunnier spots, avoiding sudden changes to prevent sunburn. Additionally, reducing obstructions like pruning trees or transplanting smaller plants to sunny locations with good drainage can significantly improve light access. Though parts of the plant that suffered from lack of light may not recover, new growth should be healthy with these adjustments.

🌡️ Temperature 20–37.8°C

Pine-cone plant is native to regions with moderate climates that experience temperatures between 68 to 100°F (20 to 38℃). It thrives best in that warmth. During colder seasons, indoor settings may need to be adjusted to more closely mimic its preferred habitat.

Ideal temperature: 20–37.8°C
FAQ
What is the ideal temperature range for the Pine-cone plant?

The Pine-cone plant, or Euphorbia bupleurifolia, is native to regions that enjoy moderate climates, with ideal temperature ranges between 68 to 100°F (20 to 38°C). It thrives best in such warmth, making it a heat-loving plant. It is important to replicate these conditions as closely as possible in indoor settings, particularly during colder seasons, to ensure the plant's wellbeing.

What should I do with my Pine-cone plant during winter?

During winter, when outdoor temperatures drop below 0°C, it's essential to move the Pine-cone plant indoors to protect it from the cold. Choosing a location near a south-facing window can provide the plant with ample sunlight. If natural light is insufficient, supplemental lighting can be employed. As growth slows down when temperatures fall below 20°C, watering should be adjusted—reduced or stopped—to prevent root rot. For those grown outdoors, watering should halt during low temperatures, and measures like setting up a temporary greenhouse or wrapping the plant with plastic film or fabric are recommended for added insulation.

How does low temperature affect the Pine-cone plant, and what are the solutions?

The Pine-cone plant is not tolerant of low temperatures and thrives when it is above 20°C. Exposure to temperatures below -5°C can weaken the plant, causing it to wilt and making it prone to root rot. Mild frost damage may not show immediate symptoms but can lead to gradual withering. To address this, trim frostbitten areas, check for and remove rotted roots, then propagate through cuttings if necessary. The plant should be moved to a warm indoor setting near a south-facing window for sunlight, and supplemental lighting can be used if needed.

What should I do if my Pine-cone plant is exposed to high temperature?

During summer, it's crucial to keep the Pine-cone plant's temperature below 38°C to prevent stopping its growth, water loss, wilting, and sunburn risks. Should the temperature exceed 43°C, sunburned and rotten parts must be removed. Protect the plant from direct afternoon sunlight until it recovers. If the plant suffers from root rot due to overwatering during high temperature periods, cease watering until new root growth is observed.

💨 Humidity
Humidity:
🪴 Soil 6-7
Soil pH: 6-7
🌱 Fertilizer

For the Pine-cone plant, light applications of fertilizer once or twice a year during the growing season are enough. Avoid fertilizing in winter or in summer when the plant is dormant. Reduce fertilizer for plants that have been repotted, and wait a couple of months after repotting before you start fertilizing again. Fertilizing helps maintain healthy growth and encourages blooming.

FAQ
Why is it important to add fertilizer to my Pine-cone plant?

Applying fertilizer to the Pine-cone plant helps add nutrients to the soil and supports healthy growth. Even though it can store water and nutrients, adding plant food during the growing season is beneficial. Fertilizing can also stimulate mature plants to bloom during this time.

What is the best time to give my Pine-cone plant fertilizer?

The Pine-cone plant thrives with a light amount of fertilizer throughout its growing season. It is recommended to fertilize the plant 1-2 times a year, specifically during the spring and autumn when it's actively growing. Avoid fertilization during the dormant periods in winter and summer. If the plant has recently been repotted, it's important to be cautious with the amount of fertilizer used. It is advised to wait a few months after repotting before applying any fertilizer.

When is it not a good idea to fertilize my Pine-cone plant?

The Pine-cone plant, like most plants, has a dormancy period where it stops growing. During this time, you should avoid applying fertilizer. This dormancy period occurs in both the summer and winter seasons. Additionally, it is recommended to refrain from fertilizing for the first few months after repotting in the spring.

What kind of fertilizer does my Pine-cone plant need?

When fertilizing Pine-cone plants, it is recommended to use a liquid plant food specifically made for succulents and cacti. Remember to dilute the fertilizer with water at half-strength to prevent a buildup in the soil. Apply the fertilizer to the base of the plant and water it thoroughly, making sure any extra moisture drains away either from the container or into the ground.

How should I give nutrients to my Pine-cone plant?

When fertilizing the Pine-cone plant, it is recommended to use liquid plant food as it is easier. However, granules are also an option. Make sure to follow the instructions on the packaging and dilute liquid fertilizers to half-strength. Regardless of whether you choose granules or liquid plant food, always apply it directly to the soil. Afterwards, cover the granules with a thin layer of soil and water the plant.

🪴 Pot & Repot 2-3 years

Repot the Pine-cone plant during warmer months, using a pot only slightly larger than the current one with good drainage. Use a well-draining cactus or succulent soil mix. Handle the roots and caudex gently when repotting. After repotting, wait about a week before watering to avoid root rot. Place it in a sunny location for optimal growth.

Suggested frequency: 2-3 years
✂️ Pruning

As a dwarf planet with a moderate growth rate, Euphorbia bupleurifolia, pruning, and trimming will be minimal. Euphorbia bupleurifolia can be pruned or trimmed to your preference if you want it to grow in a particular shape. The sap is the only thing you need to be cautious of when trimming. Remember to always wear gloves when pruning.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

All parts of the plant are poisonous, but the seeds have larger concentrations of cycasin, a glucoside that is neurotoxic and carcinogenic. If consumed, the cycad sago palm is exceedingly toxic to both people and animals. Dogs will frequently opt to eat the seeds and leaves if they are available even though they are exceedingly hazardous.

Characteristics

Plant Type
Succulent
Life Cycle
Perennial
Genus
Euphorbia
Family
Euphorbiaceae
Hardiness Zone
9-11
Mature Height
10 cm to 15 cm
Mature Spread
49 cm
Leaf Color
Light Green, Yellow Green
Leaf Type
Deciduous
Flower Color
Green, Yellow
Flower Size
2.54 cm
Bloom Time
Spring, Early summer, Mid fall, Late fall, Winter
Planting Time
Spring, Summer
Harvest Time
Spring, Early summer, Mid summer, Winter
Native Area
South Africa

Tags (14)

Common Names (3)

en Pine-cone plant
en Rabbit-eared spurge
en Cycad Euphorbia