Pterocarpus officinalis — an easy houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Pterocarpus officinalis

Pterocarpus Officinalis

Updated · 72 observations
ON THIS PLANT

Pterocarpus officinalis, commonly known as Pau Santo or Santos Rosewood, is a species of flowering tree in the Fabaceae family. It is native to Central and South America, including countries such as Brazil, Colombia, and Peru. The tree can reach heights of up to 30 meters, with a trunk diameter of up to 1 meter. Its bark is dark brown and deeply fissured, with a reddish inner layer.

The leaves of this tree are pinnate, consisting of 5 to 9 leaflets that are ovate or elliptical in shape. They are dark green on the upper surface and lighter green on the lower surface.

The flowers of Pterocarpus officinalis are small and yellowish-green. They grow in clusters at the ends of branches during the springtime.

The wood from this tree is highly valued for its durability, strength, beauty, and fragrance. It has been used for centuries in the making of furniture and musical instruments such as guitars.

Additionally, Pterocarpus officinalis has been traditionally used by indigenous people for medicinal purposes, including treating fever, inflammation, and pain relief.

However, due to overexploitation, this species has become endangered. Various organizations, including CITES (Convention on International Trade in Endangered Species), have implemented conservation efforts to protect it.

A note from PlantMom

The Dragonsblood tree has good disease resistance and is generally not prone to diseases. Regarding care, this plant is fairly low-maintenance. When grown outdoors it needs minimal watering, and larger plants usually do not require pruning. Smaller plants, however, should be pruned after they have finished blooming. The Dragonsblood tree is suitable for anyone with an outdoor area, such as a garden or deck, and does not require much care experience.

— PlantMom
CARE GUIDE

How to keep Pterocarpus Officinalis.

Light

The Dragonsblood tree comes from open habitats, like sunny meadows and forest edges, which supply abundant light. It does best in Full Sun but can also tolerate Partial Sun, adapting to a range of sunlight conditions.

Water

The Dragonsblood tree is a drought-tolerant plant well-suited for arid regions. It requires watering only every 2-3 weeks and thrives outdoors, easily adapting to variations in natural rainfall. To ensure optimal growth, use well-draining soil to prevent root rot, which is common in overwatered plants.

Temperature

The Dragonsblood tree comes from tropical areas, where the climate is usually warm and humid. Because of this, it is adapted to high temperatures and moisture. It does not tolerate sudden temperature shifts and prefers a consistent temperature, so indoor fluctuations should be avoided. It typically cannot withstand cold and needs higher temperatures to grow. If the surrounding temperature becomes too low, the plant may stop growing or even die.

Fertilizer

Fertilizing is essential for the care of the Dragonsblood tree. Regular feeding during the growing season maintains energy for its showy foliage and supports overall growth. Neglecting fertilization can lead to unhealthy leaves, reduced ornamental appeal, and stunted or weak growth that is more prone to breakage.

Pruning

The Dragonsblood tree, known for its distinctive blood-red sap, benefits greatly from pruning in early spring. To improve its health and appearance, trim dead or crossing branches to increase airflow. Additionally, remove any suckers and thin out crowded areas. Always use sterilized tools to make clean cuts, which helps prevent disease and enhances the tree's vitality and appearance.

CHARACTERISTICS

Botanical profile.

Plant Type
Tree
Life Cycle
Perennial
Genus
Pterocarpus
Family
Fabaceae
Hardiness Zone
10-12
Mature Height
39.93 m
Mature Spread
14.94 m to 20.12 m
Leaf Color
Dark Green, Forest Green
Leaf Type
Deciduous
Flower Color
Yellow
Flower Size
25.40 cm
Bloom Time
Late spring, Early summer, Mid summer
Planting Time
Spring, Summer, Autumn
Harvest Time
Mid summer, Late summer, Early fall
Native Area
Colombia, Belize, Cuba, Honduras, Mexico, Guyana, Brazil, Nicaragua, Ecuador, Costa Rica, Panama, Jamaica
ALSO KNOWN AS

Other names.

en Bois mang en Swamp bloodwood en Dragon's-Blood-Tree en Dragonsblood tree en Bloodwood en Dragon Blood Tree en Guadaloupe Dragon's Bloo en Lagunero en Sangre de Drago en Corkwood
FREQUENTLY ASKED

Reader questions.

How should I water my Dragonsblood tree in the best way?

To ensure excellent root development, it is recommended to place a garden hose at the base of the plant, avoiding direct spraying of the leaves. If the plant is outdoors and exposed to direct sunlight, the leaves will need more watering. Using bubblers or soaker hoses to moisten the roots of each plant is also effective. When adding or removing plants, using soaker hoses that cover the entire garden or bed will help push the roots deeper. It's important to drain any excess water and allow the soil to dry before watering again. Watering at ground level is advisable to prevent diseases. On sunny days, it may be beneficial to spray the entire bush with water. Regardless of whether the plant is potted or in-ground, it is important to remember that the Dragonsblood tree prefers deep watering rather than light sprinkling.

What are the sunlight requirements for a Dragonsblood tree?

Dragonsblood trees, scientifically known as Pterocarpus officinalis, thrive in environments that offer full sun but can also adapt well to partial sun conditions. Full sun exposure means the plant should receive above 6 hours of direct sunlight daily, while partial sun refers to about 3-6 hours of sunlight. It's crucial to observe your garden's sunlight pattern to ensure the plants are positioned in spots that provide an ideal balance of light and shade, fostering their growth and happiness.

What do I do if I give too much or too little water to the Dragonsblood tree?

An overwatered Dragonsblood tree can exhibit yellowing, wilting leaves, and leaf drop. It may also have a lackluster appearance and mushy stems. Adjusting your watering schedule when these signs appear is recommended. Additionally, wilting can be a sign of under watering, with crispy and dry leaves indicating this condition. When the soil is dry and regular watering is insufficient, giving it a full watering will help. However, even with enough water, the plant may still have dry and yellow leaves due to root damage. Once the plant recovers, the yellowing of leaves will cease. When keeping the Dragonsblood tree indoors, always check the moisture levels in the pot and avoid overwatering. Look out for black spots as a sign of excess water, and allow the soil to dry by withholding watering for a few days. Overwatering can lead to root rot, so if discolored and slimy roots are present, consider transferring the plant to a different pot. Preventing root rot and avoiding excessively soggy soil is crucial. When planting the Dragonsblood tree outdoors, ensure proper soil moisture by checking the soil for dryness and providing adequate watering to aid in plant recovery.

How can artificial lighting be used for Dragonsblood trees when natural sunlight is insufficient?

When Dragonsblood trees are grown indoors or in spaces where natural sunlight is lacking, especially during winter, artificial lighting can be an effective solution to supplement their light requirements. LED lights, for instance, are recommended as they can be tailored to provide specific wavelengths of light necessary for plant growth. The intensity of artificial light needed varies depending on the plant's sunlight requirements; full sun plants require 30-50W/sq ft, partial sun plants need 20-30W/sq ft, and full shade plants require 10-20W/sq ft. The artificial light source should be positioned 12-36 inches above the plant, mimicking natural sunlight's distance, and should be left on for about 8-12 hours per day to imitate natural daylight hours.

How frequently should I water my Dragonsblood tree?

The Dragonsblood tree prefers deep and infrequent watering. If they are planted in pots, it is especially important to soak them with a gallon of water each time. This is because the water storage capacity of flower pots is limited and the soil tends to dry out faster. In cold regions, watering is needed every 3 to 5 days. The best time to water is in the early morning when the soil is dry, whether the plant is indoors or outdoors. To determine if watering is necessary, check the soil inside the pot. If the top 2-3 inches of soil are dry, it is time to give the plant a full watering. During hot days, check the moisture daily as the heat can quickly dry out the soil in the pot. If you have a garden, it is also important to irrigate the soil. In hot climates, watering once a week is recommended. Only water when you notice that about 2 to 3 inches of soil have become too dry, both indoors and outdoors. Take into account the amount of rainfall on the plant and avoid adding additional water to prevent root rot. If there is already a lot of rainfall, additional watering may not be necessary. The Dragonsblood tree generally grows during spring and fall. When the plant is outdoors, adding a layer of mulch about 3 to 4 inches deep can help conserve water. Sandy soil, which drains faster, requires more frequent watering. On the other hand, clay soil requires less frequent watering, where the plant can go for 2-3 days without water to avoid root rot. To keep track of watering, mark the date on the calendar and pay attention to the leaves. If they start to droop, it may indicate that watering is needed sooner.

What are common symptoms of light deficiency in Dragonsblood trees?

Dragonsblood trees exposed to inadequate sunlight may exhibit several symptoms indicating light deficiency. These include smaller new leaves, leggy or sparse growth with increased space between leaves or stems, faster leaf drop as older leaves are shed early, and a halt in new growth as the tree enters a survival mode. New leaves might appear lighter in color or pale due to insufficient sunlight affecting chlorophyll production and essential nutrient absorption. Coping strategies for excessive sunlight include symptoms like chlorosis, sunscald, leaf curling, wilting, and leaf scorching, highlighting the plant's sensitivity to both low and high sunlight intensity.

How much water does my Dragonsblood tree need?

The Dragonsblood tree has specific watering needs. For potted plants, it's recommended to water them deeply until the water is dripping out of the pot. After that, allow the soil to dry before watering again. It's helpful to use a water calculator or moisture meter to track how much water you've given the plant each week. During the flowering period, make sure to provide plenty of water, but allow the moisture to evaporate afterwards to avoid root rot. If the Dragonsblood tree is planted outside and receives sufficient rainfall, it may not need extra watering. When the tree is young or newly planted, aim for 1-2 inches of rain per week. As the tree grows, it can rely on natural rainfall. Only in very hot weather or if there is no rainfall for 2-3 weeks, consider giving the tree a thorough watering during cooler parts of the day to prevent heat damage. Additional watering may be necessary during prolonged dry periods.

What solutions can be applied to address insufficient sunlight for Dragonsblood trees?

To counteract insufficient sunlight for Dragonsblood trees, consider gradually moving the plants to sunnier locations, aiming for at least 6 hours of direct sunlight daily. For indoor plants that are large or difficult to move, supplementing with artificial lighting, such as desk or ceiling lamps turned on for at least 8 hours daily, can be beneficial. For outdoor plants, it's crucial to adjust them gradually to new light conditions to prevent sunburn. If the environment has physical obstructions blocking sunlight, strategic pruning or relocating the plant during its dormant period to a brighter spot with good drainage might be necessary. It's essential to note that while parts of the plant already affected by light deficiency may not recover, new growth should be healthy once optimal light conditions are restored.

Do I need to change how often I water my Dragonsblood tree based on the time of year or the weather?

The Dragonsblood tree requires outdoor conditions with rain, but only needs watering in persistently dry weather. Keep the soil moist but not soggy during the spring and fall growing seasons, as alternating dry and moist soil conditions are best for growth. In the summer, hot weather can cause water to evaporate quickly, so additional watering may be necessary if there is a lack of rainfall. However, the tree will generally need less water in the winter when it goes dormant. Using well-draining soil and terracotta pots can help moisture evaporate faster during this time. Once the tree starts leafing out in the spring, watering can be skipped altogether, as it can rely on fall and winter rains to survive. When the temperature warms up, you can cultivate and encourage your Dragonsblood tree to bloom. Good drainage is essential year-round, particularly in winter, to avoid ponding or drought. When in pots, these trees have limited root growth, so keep them well-watered, especially in the summer. Avoid cold and wet roots by providing adequate drainage. Water the root system deeply at least once or twice a week, depending on the weather, rather than applying shallow sprinkles that encourage fungal growth and don't reach the roots. Even during dormancy in the fall and winter, don't allow the tree to dry out completely. Avoid overwatering and ensure the soil drains well to prevent plant death during the winter. Additionally, using mulch can reduce stress, conserve water, and promote healthy blooms.

What do I need to do when watering my Dragonsblood tree in different seasons, climates, or during different growing periods?

If you're planting a Dragonsblood tree in the ground, it primarily relies on rain. However, if there hasn't been any rainfall for 2-3 weeks, you may need to give them a deep watering. When watering the tree in the summer, it's best to do it in the morning to avoid stressing the roots with a large temperature difference. Also, avoid watering the bushes when it's too hot outside. Mulching should be done in the spring when the ground isn't too cold. The age of the plants is important, as lack of water is a common reason for newly planted ones to fail to grow. Once they are established, you can reduce the watering schedule. During fall and winter, especially if there is water-retaining material in the soil, watering should be decreased. Dry winds in these seasons can dry out the plants, especially the newly planted ones. Windy seasons generally require more watering. If you have potted plants, they tend to dry out faster and need more watering. Look out for signs such as reduced blooming and drying leaves. Watering potted plants can be more complex and their frequency can fluctuate. Avoid letting the pots sit in water and don't use containers with saucers, bowls, or trays. Overwatering in the fall can cause mottled or yellowish foliage. It's important to prevent overwatering regardless of the climate or season. During the flowering months, you might increase the watering frequency, but once they are fully grown, it's best to give them a rest. Water them adequately every 3 to 5 days, but don't stick to a strict schedule. Check the soil's dryness by sticking your finger in it or using a moisture meter if unsure. Too much root rot can be detrimental to the tree, so avoid overwatering or underwatering regardless of your area's climate or season.

Why do I need to water my Dragonsblood tree?

Watering the Dragonsblood tree is necessary to transport nutrients from the soil to the rest of the plant. Understanding the appropriate amount of water to give is crucial for maintaining the species' health. The watering requirements vary depending on the weather conditions in your region and the type of soil the plant is in. The Dragonsblood tree prefers moist soil but cannot tolerate being waterlogged. Using enough mulch when planting in the ground is important, and it's crucial to avoid under-watering. When planted in a pot, a full can of water should be provided, ensuring that the water is moist at the base to encourage optimal blooming. If the Dragonsblood tree is primarily grown for its foliage, it needs to be watered to a depth of 10 to 20 inches for continuous growth. During rainy periods, it is advisable to refrain from watering as the tree can acquire the necessary nutrients from the rainwater.

PLATES
Pterocarpus officinalis leaf
PLATE 01 · leaf
Pterocarpus officinalis leaf
PLATE 02 · leaf
Pterocarpus officinalis flower
PLATE 03 · flower
Pterocarpus officinalis flower
PLATE 04 · flower
Pterocarpus officinalis fruit
PLATE 05 · fruit
Pterocarpus officinalis fruit
PLATE 06 · fruit
ALSO IN THE LIBRARY

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