Phytolacca dioica
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Phytolacca dioica

Ombú · Umbratree · Belhambra · Bella ombre · Pokeweed

Tier 1 Difficulty: easy Water: low Light: full_sun
Water every
7 days
Temperature
20–37 °C
Soil pH
6–7
Hardiness
Zone 9–11
Click count
407
Observations
2,971

Description

Source: leafsnap

Phytolacca dioica, commonly known as ombú or bellaco, is a large evergreen tree native to South America. It can grow up to 20 meters tall and has a broad canopy that can reach up to 15 meters in diameter. The tree features a thick trunk with smooth bark and large branches that spread horizontally. The leaves of the ombú are simple, alternate, and ovate in shape with prominent veins. They are dark green on the upper surface and lighter green on the lower surface. The flowers are small, white or pinkish-white in color, and arranged in long clusters. The fruit of Phytolacca dioica is a small berry that turns from green to black when ripe. It contains numerous seeds, which are dispersed by birds. This plant is commonly used for its medicinal properties, as it contains compounds such as saponins, flavonoids, and tannins, which have anti-inflammatory properties, among others. Phytolacca dioica is also valued for its hardy and durable wood, making it ideal for construction purposes such as furniture making or fence posts. Overall, Phytolacca dioica plays an important ecological role by providing habitat for birds. Economically, it is significant due to its medicinal properties and its uses in woodworking, among other applications.

💡 The ombú plant belongs to the same family as American pokeweed, a toxic plant known for its purple berries. Like pokeweed, the leaves and other parts of the ombú plant are also poisonous.

🌳 Beyond offering shade, the Ombú also provides a rich, plant-based ink and a natural dye. Traditionally, its berries have been used to produce a bright red dye, giving textile manufacturers a sustainable and environmentally friendly alternative. Although this use is not widespread, it underscores the Ombú's potential as a sustainable bioresource in a time of eco-conscious consumption.

Care Guide

💧 Water Every 7 days

The Ombú tree is native to the arid regions of South America and is known for its drought tolerance and ability to store moisture in its thick trunk. When cultivated, it requires watering every 2 to 3 weeks. Its extensive root system allows it to use water efficiently during the growing season.

Suggested frequency: Every 7 days
FAQ
How should I water my Ombú plant in the best way?

Your Ombú is not demanding when it comes to watering. Any common watering tool, such as watering cans, hoses, or even cups, can be used to water this plant. Regardless of the tool you choose, it is important to apply the water directly to the soil. Make sure to evenly moisten all areas of the soil to provide sufficient water to all parts of the root system. Consider using filtered water instead of tap water, as tap water may contain harmful particles. Additionally, it is preferable to use water that is at or slightly above room temperature, as extreme temperatures can be a bit shocking to the Ombú. However, the Ombú generally reacts well to any type of water provided.

What should I do if I give my Ombú tree too much or too little water?

Outdoor plants, especially newly planted ones or seedlings, are prone to lack of watering. It's important to remember to water them enough for a few months, especially when they are small or recently planted. Once the roots of an Ombú tree are established, they can rely on rain most of the time. When your Ombú is planted in pots, overwatering is more likely to happen. If you accidentally overwater your Ombú, there are steps you can take to remedy the situation. First, stop watering your plant immediately to minimize the effect of overwatering. Then, remove your Ombú from its pot to check its roots. If there is no sign of root rot, you can return your plant to its container. If root rot is present, trim away the affected roots and consider applying a fungicide to prevent further damage. Finally, repot your Ombú in well-draining soil. In the case of underwatering, simply water the plant more frequently. Underwatering is usually easy to fix. When a plant is underwatered, its leaves tend to droop, dry out, and fall off. However, the leaves will quickly recover and regain fullness after sufficient watering. It's important to correct your watering frequency as soon as you notice signs of underwatering.

How frequently should I give water to my Ombú plant?

If your area doesn't get enough rainfall, you'll need to water your plants regularly. In the spring and fall, watering every 2 weeks should be enough. In the summer, you'll need to water more often. In the winter, you can water less frequently and may not need to water at all. If your Ombú plant is young or newly planted, it will need more frequent watering to help it grow and become drought tolerant. For potted plants, there are two ways to determine how often to water your Ombú. One way is to stick to a set watering schedule, such as once a week or once every other week. However, this may not always be ideal as it doesn't take into account the specific growing conditions for your plant. Another option is to check the soil moisture before watering. Wait until the top two to four inches of soil (about ⅓ to ½ depth of the pots) have completely dried out before giving more water.

How much water does my Ombú tree need?

Watering your Ombú plant may not always require a large amount of water. It is sufficient to give it around five to ten ounces of water if only a few inches of soil have dried since the last watering. You can determine the appropriate 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 proper moisture, water the plant enough to moisten all the dry soil layers since the last watering. If more than half of the soil has dried, give more water until excess water drains from the pot's holes. If your Ombú is planted in a rainy outdoor area, additional watering may be unnecessary. When the plant is young or newly established, it needs 1-2 inches of rain per week. As it grows, it can rely solely on rainwater unless there is a lack of rain for 2-3 weeks during hot weather, then a full watering is advisable to prevent plant stress.

How should I water my Ombú plant as it grows?

As the Ombú grows from a seedling, it requires more water compared to when it is fully matured. It's important to consistently keep the soil moist during the early stages to promote root development. This also applies to any Ombú that has been transplanted to a new location. Proper care can result in the Ombú producing beautiful flowers and fruits. During the flowering or fruiting phase, it may require slightly more water to support these structures.

☀️ Light Full sun

The ombú requires substantial sunlight to grow healthily. Its native habitat is defined by plentiful sunshine. While it can tolerate periods of limited light, ongoing absence of sunlight may impede its growth. Excessive sun exposure can also cause the leaves to wilt or lose color.

Ideal: Full sun
FAQ
What are the sunlight requirements for the Ombú plant?

The Ombú plant thrives best under full sun exposure, which means it needs more than 6 hours of sunlight daily to grow healthy. It can tolerate partial sun too, with about 3-6 hours of sunlight. However, too little or too much sunlight can be harmful. Insufficient sunlight may result in growth issues, while excessive sun can cause the leaves to wither or become discolored. To ensure your plants are happy, observe the sunlight movement through your garden and find spots that offer a good balance of light and shade.

Can artificial lighting be used for indoor Ombú plants?

Yes, artificial lighting is essential for the growth of indoor Ombú plants, especially when natural sunlight is inadequate. LED lights are recommended as they can be customized to provide the specific wavelengths of light the plants need. For optimal growth, full sun plants require 30-50W/sq ft of artificial light, partial sun plants need 20-30W/sq ft, and full shade plants need 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.

What are symptoms of insufficient or excessive sunlight in Ombú plants?

Insufficient sunlight in Ombú plants can lead to smaller new leaves, leggy or sparse growth, faster leaf drop, slower or no new growth, lighter-colored new leaves, and symptoms of light deficiency. Excessive sunlight can cause chlorosis (leaves turning yellow and losing green color), sunscald (damage from intense sunlight exposure), leaf curling (to minimize water loss), wilting (loss of turgor pressure), and leaf scorching (brown, dry edges on leaves). These symptoms indicate the plant's struggle with the current light conditions.

How can I ensure my Ombú plant receives the right amount of sunlight?

To ensure your Ombú plant gets the right amount of sunlight, gradually move it to a sunnier spot each week until it receives at least 6 hours of direct sunlight daily. If indoors, use a south-facing window and keep curtains open. For outdoor plants, avoid sudden changes in light intensity to prevent sunburn. If necessary, use artificial light sources for plants that are large or difficult to move. Remember, parts of the plant affected by inadequate light may not recover, but new growth will be healthy once proper light is restored.

🌡️ Temperature 20–37.8°C

Ombú prefers warm conditions and performs best at temperatures of 68 to 100 °F (20 to 38 °C). This preference comes from its native temperate climates. During particularly extreme seasons, slight temperature adjustments may be needed to ensure optimal growth.

Ideal temperature: 20–37.8°C
FAQ
What is the preferred environment for Ombú plants?

Ombú plants thrive in warm environments, favoring temperatures between 68 to 100°F (20 to 38°C), which reflects their native temperate climates. They require slight temperature adjustments during extreme seasons to maintain optimal growth. As heat-loving plants, they can be harmed by cold temperatures. In the autumn, it is advisable to bring outdoor Ombú plants indoors, placing them near a bright window but away from direct heat sources. Keeping the temperature above 20°C during winter benefits their growth, while temperatures nearing 0°C are harmful.

What are the symptoms of low temperature exposure in Ombú plants and how can they be treated?

Ombú plants prefer warm temperatures and do not tolerate low temperatures well, thriving best above 20°C. In winter, they should be kept above 0°C since temperatures below -5°C may cause the leaves to lighten in color. After frost damage, leaves gradually turn brown or black, and wilting or drooping may occur. To treat frost damage, trim off the frost-damaged parts and move the plant indoors to a warm environment for protection. Place it near a south-facing window for ample sunlight, ensuring it is not placed near heaters or air conditioning vents to avoid air dryness.

How should Ombú plants be cared for in high temperatures?

During the summer, it's important to keep Ombú plants in conditions below 38°C. When temperatures exceed 43°C, the leaves may lighten in color and the plant becomes prone to sunburn. To care for an Ombú in high temperatures, trim away sunburned and dried parts and move the plant to a shaded area during the intense midday and afternoon sun. Water the plant in the morning and evening to maintain soil moisture and protect it from extreme heat.

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

Fertilizing is essential for the care of an Ombú. Regular feeding during the growing season preserves the energy needed for its showy leaves and supports overall growth. Failing to fertilize can lead to unhealthy leaves, reduced ornamental appeal, and stunted or weak growth that is prone to breakage.

FAQ
Why should I put fertilizer on my Ombú?

Ombú plants need regular fertilization because their showy leaves require a lot of energy to produce and maintain. This can be a challenge because the plant not only needs energy for its leaves, but also for the growth of its stems, branches, roots, and other vital structures. If you neglect fertilization, two things are likely to happen. Firstly, the leaves will lose their natural color and texture, making the plant look unhealthy and less ornamental. Secondly, the growth of the plant will slow down or become weak, making it more susceptible to breakage.

When should I fertilize my Ombú plant?

To ensure the health of your Ombú plant, it's best to feed it occasionally rather than following a strict schedule. One simple way to fertilize it is by applying the fertilizer when watering the plant from time to time. Additionally, during the growing season, it requires a sufficient amount of water. Feeding the Ombú once every two to three weeks is recommended, and this frequency should be maintained as long as the plant is actively growing.

When is the best time to not fertilize my Ombú plant?

You can follow a regular fertilization schedule for your Ombú throughout most of the year, specifically during the active growing season of spring, summer, and early fall. However, it is important to note that during the winter, the Ombú enters a dormant growth phase. During this time, the plant does not experience much or any new growth. Since the plant is using less energy overall during this phase, fertilization is not necessary.

What kind of fertilizer does my Ombú tree need?

When fertilizing an Ombú tree, it is important to use a specific blend of nutrients in relatively low amounts. The ideal ratio of nitrogen (N), phosphorus (P), and potassium (K) in the fertilizer should be 3-1-2. However, in some cases, a general-purpose fertilizer with an even blend of nutrients can also work well. Regardless of the type of fertilizer used, the volume of each nutrient should be at 3 or lower. You have the option of using either granular or liquid-based fertilizer. If you choose to use a liquid-based fertilizer, it is recommended to dilute its strength by half. Granular fertilizer does not have many drawbacks, but using liquid fertilizer, especially when watering your Ombú tree, is often the most practical choice.

How should I add fertilizer to my Ombú plant?

One easy way to fertilize a Ombú is to feed it whenever you water it. Here's how to do it: gather your fertilizer and a water container, like a watering can. Mix the fertilizer with water to weaken its strength. Then, pour the water with the fertilizer onto the soil, making sure it reaches the roots. Alternatively, you can use a granular fertilizer. To do this, simply sprinkle some of the fertilizer on the soil where your Ombú is planted. Granular fertilizers are usually slow-release, so you don't have to fertilize as often as you would with a liquid fertilizer. Remember to water your Ombú while you feed it, regardless of the fertilizer type you choose.

🪴 Pot & Repot
✂️ Pruning

The Ombú is a fast-growing tree known for its thick foliage. To maintain its health and appearance, it is important to use key pruning techniques. Remove any dead branches and thin out the canopy to improve airflow; this should ideally be done from early to late spring. Be sure to use clean, sharp tools to prevent diseases and encourage quick healing.

🌿 Propagating
🐛 Diseases & pets
☠️ Toxicity

Characteristics

Plant Type
Tree
Life Cycle
Perennial
Genus
Phytolacca
Family
Phytolaccaceae
Hardiness Zone
9-11
Mature Height
11.89 m to 17.98 m
Mature Spread
11.89 m to 14.94 m
Leaf Color
Green
Leaf Type
Evergreen, Semi-evergreen
Flower Color
White, Cream
Flower Size
2.54 cm
Bloom Time
Early summer, Mid summer
Planting Time
Autumn, Winter, Spring
Harvest Time
Mid summer, Late summer, Early fall
Native Area
Colombia, Bolivia, Venezuela, Peru, Ecuador

Tags (5)

Common Names (9)

en Ombú
en Umbratree
en Belhambra
en Bella ombre
en Pokeweed
en Ombu tree
en Umbra
en Ombu
en Belhombra