Conocarpus erectus — an easy houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Conocarpus erectus

Conocarpus Erectus

Updated · 560 observations
ON THIS PLANT

Conocarpus erectus, commonly known as buttonwood or button mangrove, is a species of flowering plant in the Combretaceae family. This plant can grow as a small to medium-sized tree or shrub, reaching heights of up to 10 meters, and features a dense, rounded crown. Native to the coastal regions of the Americas, Conocarpus erectus is found from Florida in the United States, through Central America, and into South America.

The leaves of Conocarpus erectus are simple, alternate, and leathery, with an oval shape that tapers at both ends. The plant produces small, inconspicuous flowers that have five greenish-white petals. The fruit is a woody capsule that contains a single seed.

Conocarpus erectus is valued for various reasons, including its use as an ornamental plant in landscaping due to its attractive foliage and tolerance for salt spray from ocean winds. Additionally, the plant provides habitat for various wildlife, such as birds, insects, crabs, and fish, thanks to its ability to thrive near saltwater environments.

Beyond its ornamental appeal, Conocarpus erectus possesses medicinal properties. Indigenous peoples have traditionally used it to treat a range of ailments, including diarrhea, fever, coughs, colds, sore throats, skin infections, wounds, and burns, among others.

Overall, Conocarpus erectus's hardiness makes it an ideal choice for coastal gardens. It can withstand harsh conditions while providing year-round beauty and ecological benefits by supporting local wildlife populations through habitat creation.

A note from PlantMom

Buttonwood has strong resistance to disease and is typically not prone to illnesses. In terms of care, this plant is fairly low-maintenance. Planted outdoors, it needs minimal watering, and larger specimens generally do not require pruning. Smaller plants, however, should be pruned after they have finished blooming. Buttonwoodt is appropriate for anyone with an outdoor area, such as a garden or deck, and does not demand extensive care experience.

— PlantMom
CARE GUIDE

How to keep Conocarpus Erectus.

Light

The buttonwood does best when it receives abundant light for most of the day, which improves its growth and health. It can survive with less light, but too much shade may impede its full development. In its native habitat it generally gets substantial light exposure, indicating that light is important for its well-being.

Water

Buttonwood is a plant that originates from coastal areas and is quite drought-tolerant. It thrives when watered every 1-2 weeks. As an evergreen, it prefers soil that remains consistently moist, but it can endure short dry spells, which makes it adaptable to a variety of climate zones.

Temperature

Buttonwood prospers in its native habitat at temperatures ranging from 68℉ to 100℉ (20℃ to 38℃). This temperate woody species favors the warmer portion of that range. In cooler conditions, it may need protection from frost to maintain its growth and health.

Fertilizer

Fertilizing is essential for Buttonwood care. Consistent feeding throughout the growing season maintains the energy needed for its showy foliage and promotes overall development. Skipping fertilization can lead to unhealthy leaves, reduced ornamental value, and stunted or weak growth that is more likely to break.

Pruning

The Buttonwood is a hardy and adaptable plant, featuring leathery leaves and dense, bushy growth. For best results, prune it from early to late winter to remove any damaged branches and encourage healthy new growth. Thinning the plant not only enhances light and air circulation but also helps reduce the risk of disease, all while maintaining its shape and promoting vigorous, attractive foliage.

Pot & Repot

When repotting Buttonwood, select a pot 1-2 inches (2.5–5.1 cm) larger with adequate drainage. Use a well-draining potting mix. Repot in spring or fall, making sure the root ball sits slightly lower than the rim of the flower pot. Water thoroughly after repotting and place in a warm spot with indirect sunlight.

CHARACTERISTICS

Botanical profile.

Plant Type
Shrub
Life Cycle
Perennial
Genus
Conocarpus
Family
Combretaceae
Hardiness Zone
10-11
Mature Height
3.96 m to 20.12 m
Mature Spread
4.57 m to 6.1 m
Leaf Color
Green, Blue
Leaf Type
Evergreen
Flower Color
White, Green
Flower Size
2.54 cm
Bloom Time
Late spring, Early summer, Mid summer
Planting Time
Spring, Autumn
Harvest Time
Mid summer, Late summer, Fall
Native Area
Belize, Angola, Honduras, Mexico, Peru, Nigeria, Guinea, Gabon, Guinea-Bissau, Panama, Jamaica, Benin, Colombia, Bahamas, Cuba, Sierra Leone, Equatorial Guinea, Cameroon, Liberia, Venezuela, Brazil, Guyana, Ghana, El Salvador, Senegal, Nicaragua, Côte d'Ivoire, Ecuador, Costa Rica, Congo
ALSO KNOWN AS

Other names.

en Button mangrove en Buttonwood en Caribbean mangrove en Button Tree en Silver-leaved Buttonwood en Buttonwood Shrub en Buttonbush en False mangrove en Florida button en Florida buttonwood en Green buttonwood en Grey mangrove en Zaragoza mangrove en Silver buttonwod en Green Buttonwood Mangrove ar کنوکارپوس، چنار دریایی ru Конокарпус
FREQUENTLY ASKED

Reader questions.

How should I water my Buttonwood plant?

Your Buttonwood is not particular about how you water it, so you can use any common watering tool. This includes watering cans, hoses, or even cups. It is important to water the soil directly, making sure to evenly moisten all areas. Using filtered water is recommended, as tap water may contain harmful particles. Additionally, using water at or slightly above room temperature is beneficial to avoid shocking the plant. However, the Buttonwood generally responds well to any water you give it.

Why should I put fertilizer on my Buttonwood plant?

Buttonwood plants require regular fertilization because their showy leaves require a significant amount of energy to develop and maintain. It is a challenge for Buttonwood to allocate enough energy to keep its leaves healthy and also support the growth of its stems, branches, roots, and other vital structures. Neglecting fertilization can lead to two likely outcomes. Firstly, the leaves may lose their natural color and texture, making them appear unhealthy and diminishing their ornamental appeal. Secondly, the overall growth of the Buttonwood plant may slow down or result in weak growth that is susceptible to breakage.

What are the sunlight requirements for Buttonwood plants?

Buttonwood plants thrive under different sunlight conditions, requiring full sun exposure of over 6 hours of sunlight to perform best, but they can also tolerate partial sun with about 3-6 hours of sunlight. It is important to observe how sunlight moves through your garden to ensure you position your Buttonwood plants in spots that offer an ideal balance of light and shade, catering to their needs for optimal growth and health.

What is the ideal temperature range for Buttonwood?

Buttonwood thrives in temperatures ranging from 68°F to 100°F (20°C to 38°C), preferring the warmer end of that spectrum. It loves heat and requires measures to protect it from frost in cooler temperatures. During winter or cooler periods, maintaining temperatures above 20°C and avoiding exposures to temperatures nearing 5°C is crucial for its growth and health. If grown outdoors, it is advisable to bring the plant indoors in autumn and keep it near a bright window, but away from direct heat sources to prevent damage.

What should I do if I give my Buttonwood plant too much water or too little water?

Outdoor plants, especially new ones or seedlings, can easily be left without enough water. It's important to remember to water them consistently for a few months, especially when they're small or newly planted. Once the roots are established, Buttonwood plants can rely on rain most of the time. When Buttonwood plants are in pots, overwatering is a common issue. If you accidentally overwater, it's important to act quickly to fix the situation. First, stop watering the plant immediately to minimize the negative effects. Then, inspect the roots by removing the plant from its pot. If you don't find any signs of root rot, you can return the plant to its container. However, if there is root rot, trim away the affected roots and consider applying a fungicide to prevent further damage. Finally, repot the Buttonwood in well-draining soil. On the other hand, underwatering is easier to fix. Signs of underwatering include drooping, drying out, and falling leaves. Simply water the plant more frequently, and the leaves should quickly return to fullness. It's important to correct your watering frequency as soon as you notice signs of underwatering.

When should I put fertilizer on my Buttonwood plant?

Buttonwood plants do well with occasional feedings, so you don't need to establish a strict feeding schedule when planting them. An easy way to fertilize your Buttonwood is by applying fertilizer during your regular watering routine. Additionally, during the growing season, it is important to give your Buttonwood an adequate amount of water. You can feed the plant every two to three weeks, consistently throughout its period of producing new growth.

What are the essentials for growing Buttonwood plants effectively?

Growing Buttonwood plants effectively requires giving them abundant light for the majority of the day, as this enhances their growth and health. Although Buttonwood can grow with less light, too much shading can inhibit its full development. In habitats where Buttonwood naturally occurs, there is typically rich light exposure, indicating the importance of sufficient lighting. For indoor plants, artificial lighting such as LED lights can be used to supplement natural sunlight, especially in conditions where natural light is inadequate. It's important to select the right type of artificial light, determine the appropriate distance from the plant, and mimic natural daylight hours, adjusting the intensity and duration based on whether the plant needs full sun, partial sun, or shade conditions.

How should Buttonwood be cared for in low temperatures?

Buttonwood is sensitive to low temperatures and thrives best above 20°C. It should be kept above 5°C during winter to avoid damage. Exposure to temperatures below 1°C can lead to discoloration of the leaves, which may turn brown or black after frost damage, manifesting symptoms like wilting and drooping. To care for Buttonwood in cold conditions, trim off frost-damaged parts and move the plant to a warm, well-lit indoor space. Position it near a south-facing window for ample sunlight without placing it too close to heaters or air conditioning vents to avoid excessive dryness.

How many times should I wet my Buttonwood?

Naturally growing outdoor plants usually rely on rainfall. But if your area doesn't get enough rain, you'll need to water your plants every 2 weeks in the spring and fall, and more often in the summer. In winter, when plants grow slower and need less water, you can water them sparingly or not at all. Young or newly planted Buttonwood plants should be watered more often to help them establish and grow. For potted plants, there are two main ways to determine watering frequency. One way is to follow a set schedule, like once a week or every other week. However, this may not work well if your specific growing conditions are different. Another option is to check the soil moisture. Ideally, the top two to four inches of soil should be completely dry before watering again. This method is especially important during the summer when the plant's water needs are highest.

When is it not a good idea to fertilize my Buttonwood plant?

For most of the year, you can fertilize your Buttonwood regularly. This is fine during the active growing season in spring, summer, and early fall. However, in the winter, you should not give any fertilizer to your plant. This is because the Buttonwood enters a dormant growth phase during the winter. During this phase, the plant does not produce much new growth. Since the plant is using less energy during this time, fertilization is not necessary.

What are the symptoms of insufficient light in Buttonwood plants, and how can they be addressed?

Symptoms of insufficient light in Buttonwood plants include smaller new leaves, leggy or sparse growth, faster leaf drop, slower or no new growth, lighter-colored new leaves, chlorosis, sunscald, leaf curling, wilting, and leaf scorching. To address these issues, indoor plants can be gradually moved to a sunnier location to receive at least 6 hours of direct sunlight daily, utilizing a south-facing window and keeping curtains open during the day. Artificial lighting can supplement natural light, especially for larger or non-movable plants, by keeping lamps on for at least 8 hours daily or using professional plant grow lights. For outdoor plants, gradually moving them to a sunnier spot and ensuring they're not subjected to sudden light intensity changes can help. Additionally, reducing obstructions such as pruning trees that block sunlight and considering transplanting smaller plants during their dormant period to sunnier locations can optimize light exposure.

How to manage high temperatures for Buttonwood?

During the summer, it's important to ensure Buttonwood's exposure to temperatures stays below 38°C, as exceeding 43°C can bleach the leaves and increase susceptibility to sunburn. To manage high temperatures, trim away sunburned or dried parts of the plant. It's beneficial to relocate Buttonwood to shade, especially during peak sun exposure in the midday and afternoon. Also, watering the plant in the morning and evening will help keep the soil moist and improve the plant's resilience to heat.

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

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