Rauvolfia serpentina — an easy houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Rauvolfia serpentina

Rauvolfia Serpentina

Updated · 87 observations
ON THIS PLANT

Rauvolfia serpentina, the Indian snakeroot, devil pepper, or serpentine wood, is a species of flower in the milkweed family Apocynaceae. It is native to the Indian subcontinent and East Asia (from India to Indonesia).Rauvolfia is a perennial undershrub widely distributed in India in the sub-Himalayan regions up to 1,000 metres (3,300 ft).

A note from PlantMom

Serpentine wood is resistant to disease and is generally not susceptible to illnesses. In terms of care, the plant is fairly low maintenance. When grown outdoors it needs only light watering, and larger specimens typically do not require pruning. Smaller plants, however, should be pruned after they finish blooming. Serpentine wood is suitable for anyone with an outdoor area, such as a garden or deck, and does not demand extensive experience in plant care.

— PlantMom
CARE GUIDE

How to keep Rauvolfia Serpentina.

Light

Serpentine wood thrives with ample sunlight throughout the day but can also tolerate periods of reduced sun. Its native habitat offers similar light conditions. However, extreme lack or excessive sunlight can impede healthy growth and damage the plant.

Water

Serpentine wood is well-known for its high drought tolerance, which stems from its natural environment. Despite this, it thrives best with moderate moisture levels and should be watered every 2 to 3 weeks. When cultivating it outdoors, take into account any rainfall during its active growth phases to maintain consistent soil moisture, promoting healthy development.

Temperature

Serpentine wood originates from subtropical areas and performs best at temperatures between 68 and 100 °F (20 to 38 ℃). During cold periods, it is recommended to keep indoor temperatures within this range to protect the plant's health.

Fertilizer

The best time to fertilize a Serpentine wood is in early spring as it breaks dormancy. This stimulates overall growth and flower development. Fertilizing improves foliage, stems, and branches, while encouraging large, vibrant, and long-lasting blooms. It helps transport nutrients from the roots to the flowers and enhances the plant’s health and disease resistance.

Pruning

Serpentine wood features curvy stems and provides medicinal benefits. To maintain its health and appearance, prune it in late spring. This helps by removing dead branches and thinning dense areas to improve air circulation. Doing so encourages growth, increases flowering, and prevents overgrowth, making serpentine wood more manageable in gardens.

CHARACTERISTICS

Botanical profile.

Plant Type
Shrub
Life Cycle
Perennial
Genus
Rauvolfia
Family
Apocynaceae
Hardiness Zone
10-12
Mature Height
49 cm to 61 cm
Mature Spread
1.52 m
Leaf Color
Green
Leaf Type
Evergreen
Flower Color
White
Flower Size
1.02 cm to 1.52 cm
Bloom Time
Late spring, Summer, Early fall
Planting Time
Spring
Harvest Time
Late summer, Fall
Native Area
Nepal, Sri Lanka, India, Malaysia, Indonesia, Cambodia, Vietnam, Myanmar, Bhutan, Bangladesh, Pakistan, Laos, Thailand, China
ALSO KNOWN AS

Other names.

en Ajmaline en Serpentine-wood en Rauwolfia en Java devil-pepper en Snakewood en Serpentine-root en Serpentina en Snake root en Devilpepper en Serpentwood en సర్పగంధి
FREQUENTLY ASKED

Reader questions.

How should I water my Serpentine wood plant?

Your Serpentine wood is not demanding when it comes to watering methods. You can use any common watering tool, such as watering cans, hoses, or even cups, to soak the plant's soil. It is important to directly apply the water to the soil and ensure that all areas of the soil receive equal moisture for the root system's benefit. Using filtered water is recommended to avoid harmful particles found in tap water. Additionally, it is best to use water that is at or slightly above room temperature as extremely cold or hot water can be somewhat shocking to the Serpentine wood. However, the Serpentine wood generally responds well to any type of water you provide.

What are the sunlight requirements for Serpentine wood?

Serpentine wood requires full sun, meaning above 6 hours of sunlight daily, to flourish but can also cope with partial sun, which is about 3-6 hours of sunlight. It's crucial to observe how sunlight moves through your garden to provide the ideal balance for the plants. Serpentine wood's origin habitat offers similar lighting conditions, and while it can adapt to varying levels of sun exposure, both a severe lack and excessive exposure can be detrimental to its health.

What is the ideal temperature range for Serpentine wood?

Serpentine wood, also known by its botanical name Rauvolfia serpentina, is native to subtropical regions and has a preference for temperatures ranging from 68 to 100°F (20 to 38°C). It is crucial to maintain this temperature range indoors during cold seasons for the plant's health. The plant is extremely heat-loving, and exposure to cold temperatures can cause harm. In locations where it is grown outdoors, it is advised to bring the Serpentine wood inside during autumn and place it near a bright window, ensuring that it is not too close to heaters. Keeping indoor temperatures above 20°C during the winter supports its growth, while temperatures near 5°C are considered harmful.

What should I do if I give my Serpentine wood too much or too little water?

Outdoor plants, especially newly planted ones or seedlings, are prone to being under-watered. It's important to provide enough water for the first few months, even if the tree is small or recently planted. Once the roots are established, outdoor plants can rely on rain most of the time. When Serpentine wood is planted in pots, overwatering becomes more likely. If you accidentally overwater your Serpentine wood, there are steps you can take to fix it. First, stop watering the plant immediately to minimize the damage. Then, remove the plant from its pot and check its roots for any signs of root rot. If there is no root rot, you can return the plant to its container. However, if there is root rot, trim away the affected roots and consider using a fungicide to prevent further damage. Finally, repot the Serpentine wood in well-draining soil. In the case of under-watered Serpentine wood, simply water the plant more frequently. Under-watering is often easy to fix - if the leaves are drooping, drying out, or falling off, they will quickly recover after sufficient watering. It's important to correct your watering frequency as soon as you notice under-watering.

How does artificial lighting benefit indoor Serpentine wood plants?

Artificial lighting is essential for Serpentine wood plants indoors where natural sunlight is insufficient, especially during winter or in less sunny spaces. It promotes healthier, faster growth. LED lights are recommended because they can be tailored to provide specific light wavelengths needed by the plants. For full sun plants, 30-50W per square foot is needed; partial sun plants require 20-30W per square foot, and full shade plants need 10-20W per square foot. The artificial light source should be placed 12-36 inches above the plant to mimic natural sunlight, and the lighting duration should replicate natural daylight hours, typically 8-12 hours per day.

How does low temperature affect Serpentine wood and what measures should be taken?

Serpentine wood thrives in warm temperatures and does not tolerate low temperatures well, thriving best when the temperature is maintained above 20°C. During winter, it's important to keep the temperature above 5°C to prevent damage. Exposure to temperatures below 1°C may cause the leaves to lighten in color. After frost damage, leaves might gradually turn brown or black, and the plant may show symptoms like wilting and drooping. To address low temperature exposure, trim off frost-damaged parts and move the plant to a warm indoor location. Placing it near a south-facing window can ensure ample sunlight while avoiding placement near heaters or air conditioning vents to prevent air dryness.

How frequently should I water my Serpentine wood?

If your area does not receive enough rainfall, you should water your outdoor plants every two weeks in spring and fall, and more often in the summer. In winter, when plants need less water, you can water them sparingly or not at all. However, if your Serpentine wood is young or newly planted, it may need more frequent watering to help it establish and become more drought tolerant. For potted plants, there are two main ways to determine how often to water your Serpentine wood. The first is to set a predetermined watering schedule, but this may not always be accurate for the specific conditions of your plant's environment. Another option is to water based on soil moisture. Wait until the top two to four inches of soil (about ⅓ to ½ depth of the pot) have dried out completely before giving more water. Keep in mind that during the summer, your plants may need watering more frequently than the predetermined schedule suggests.

What are the symptoms of light deficiency in Serpentine wood?

Symptoms of light deficiency in Serpentine wood include smaller new leaves compared to mature ones, leggy or sparse growth, faster leaf drop, and slower or halted growth. Additionally, new leaves may appear lighter in color, indicating a lack of chlorophyll. Other symptoms related to excessive sunlight exposure include chlorosis, sunscald, leaf curling, wilting, and leaf scorching. These conditions show the plant's struggle with adapting to its light environment, whether it's insufficient or excessive light.

How should Serpentine wood be cared for during high temperatures?

During summer, it is important to ensure that the temperature around Serpentine wood does not exceed 38°C to prevent heat stress. Temperatures above 43°C can cause the leaves to lighten and increase the risk of sunburn. To mitigate damage from high temperatures, trim away sunburned or dried parts and relocate the plant to a shaded area, especially to protect it from midday and afternoon sun. Watering the plant in the morning and evening can help keep the soil adequately moist, further reducing heat stress.

How much water does my Serpentine wood require?

When watering your Serpentine wood, it's important to note that it doesn't always require a large amount of water. If only a few inches of soil have dried since the last watering, giving it about five to ten ounces of water each time will promote healthy growth. You can also determine the amount of water based on the moisture level of the soil. Take note of how many inches of soil have dried out between waterings. To ensure the plant receives adequate moisture, water enough to dampen all the layers of dry soil since the last watering. If more than half of the soil has dried out, consider giving it more water than usual and continue until you see excess water draining from the pot's drainage holes. If your Serpentine wood is planted in an area with plenty of outdoor rain, it may not require additional watering. When the plant is young or still establishing, aim for 1-2 inches of rain per week. As it grows and becomes established, it can rely entirely on rainwater. Only during hot weather conditions with no rainfall for 2-3 weeks should you consider giving it a full watering to prevent stress.

What solutions can be applied to improve the light conditions for Serpentine wood?

To improve light conditions for indoor Serpentine wood plants, gradually move them to sunnier locations until they receive at least 6 hours of direct sunlight daily, using south-facing windows for maximum exposure. If moving the plant isn't feasible, consider using artificial lights for at least 8 hours a day. For outdoor plants, avoid sudden changes in light intensity by slowly acclimatizing them to sunnier spots. Reducing obstructions such as pruning trees or transplanting to sunnier locations can also help. However, parts of the plant affected by insufficient sunlight may not recover, but new growth should be healthy with improved light exposure.

How do I know if I'm watering my Serpentine wood enough?

The Serpentine wood is more commonly affected by overwatering, and there are certain signs to watch out for. An overwatered Serpentine wood will typically have yellowing leaves and may even shed some leaves. Additionally, overwatering can cause the plant's overall structure to shrink and potentially lead to root rot. Conversely, an underwatered Serpentine wood will also show signs of wilting and may have brown or brittle leaves. Regardless of whether you notice signs of overwatering or underwatering, it is important to take action and restore the plant's well-being.

PLATES
Rauvolfia serpentina leaf
PLATE 01 · leaf
Rauvolfia serpentina leaf
PLATE 02 · leaf
Rauvolfia serpentina flower
PLATE 03 · flower
Rauvolfia serpentina flower
PLATE 04 · flower
Rauvolfia serpentina fruit
PLATE 05 · fruit
Rauvolfia serpentina fruit
PLATE 06 · fruit
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