La calathea medallion It is one of those indoor plants that captivate at first sight thanks to its spectacular foliage and the elegance of its leaves, which show an unparalleled color contrast. This species belongs to the Marantaceae family and is native to the tropical areas of America, especially Peru and Brazil, which explains its requirements regarding light, humidity and temperature.
If you have always been fascinated by the color and life that calatheas transmit, the medallion variety is one of the most recommended options for decorating interiors and creating exotic and relaxing environments. In this complete guide you will discover what the Calathea medallion is like, what its Key features, the specific care it needs, the most common problems and, in addition, interesting facts and tips to keep your plant looking healthy and lush for years.
What is the Calathea Medallion like? Characteristics and features
The Calathea Medallion, scientifically known as Calathea roseopicta 'Medallion', is appreciated for its large, rounded or oval leaves, with dark green drawings on the upper surface and reddish or purple tones on the undersidePerhaps the most striking feature of this plant is the spectacular contrast between the two sides of its leaves.
The leaves of the Calathea Medallion can reach between 40 and 60 centimeters tall, although under optimal conditions and with proper care, it can grow to over 80 centimeters. In nurseries, it's common to find specimens between 30 and 60 cm, ideal for indoor spaces.
La medallion variety It features a clear central pattern (often in shades of yellow, white or light green) with darker edges, simulating the shape and color of a medallion, from which it takes its name.
In addition to its undeniable ornamental value, the Calathea medallion is known as prayer plant due to its daily movement: during the day, its leaves expand and open to capture the light, while at night they fold upwards in a gesture reminiscent of hands praying. This phenomenon is a result of the circadian rhythm typical of many tropical plants.
- It is not toxic to pets or people., making it a safe choice for homes with children and pets.
- Its growth is relatively slow, but with proper maintenance it remains leafy and vigorous year after year.
Among the different calatheas, the medallion stands out for the intensity of its color and the resistance of its leaves. They are so hardy that, in Brazil, they have traditionally been used for wrap food or as raw material in crafts.
Calathea Medallion Care: The Key to a Happy Plant
Caring for a Calathea Medallion is not complicated, but it does require attention and perseverance Due to its sensitivity to environmental changes and excessive or insufficient humidity. Below, we'll look at each key aspect to ensure your plant grows healthy, with shiny leaves and without common problems.
Location and lighting
The Calathea Medallion needs abundant indirect light. Excessive direct sunlight can cause the appearance of Brown spots and burns on the foliage, while lack of light can cause colors to fade.
- Place it near a window with light curtains or in a bright room, but never in direct sunlight.
- If your home is dimly lit, Calathea medallion can adapt, but growth will be slower and the leaf colors less vibrant.
- Avoid placing it near intense heat sources, radiators, or in drafty areas, as sudden temperature changes can stress it.
Optimal temperature
Coming from humid and warm environments, the Calathea Medallion prefers a stable temperature between 18 and 26 °CIt is essential to avoid sudden changes and temperatures below 15°C, which can slow development and cause leaf damage.
- It does not withstand cold or extreme heat (above 30°C) well.
- During the colder months, keep it away from windows where cold air can enter.
- In summer, keep the plant away from direct heat sources and keep the environment cool and ventilated.
The best substrate and soil for Calathea medallion
Un aerated substrate and with good sewer system It is vital to prevent waterlogging and root rot. For more details, see Calathea care.
- Mixture 50% universal substrate (rich in organic matter) with perlite (will improve drainage) and add coconut fiber If you are looking for moisture retention without caking.
- Avoid using substrates with excessive sphagnum moss, as they retain too much water.
- The soil should maintain a certain level of moisture, but never be soggy. When you touch the surface, it should feel cool but not soggy or sticky.
Potting and transplanting
The Calathea Medallion does not need to be repotted frequently due to its slow growth. It is recommended to do so every 2-3 years, or whenever roots are observed to be protruding from the drainage holes or the plant has stopped growing.
- Use a pot with drainage holes and a diameter 15% larger than the previous one.
- In dry climates, a plastic pot helps retain moisture; for humid environments, terracotta helps balance, but can dry out faster.
- The best time to transplant is in late winter or early spring, when the plant begins its active growth phase.
- Renew the substrate and remove damaged roots when transplanting.
Irrigation and humidity
Irrigation is, without a doubt, one of the most delicate factors for success with Calathea medallion. This plant doesn't tolerate drought, but overwatering is just as detrimental. Maintaining a balance is key.
- Water only when the top layer of the substrate (1-2 cm) is dry to the touch. You can check the commandments for caring for Calathea for more details.
- The frequency varies depending on the season and climate: it can be once a week in winter and two or three times a week in midsummer or in dry environments.
- Use soft, filtered, rainwater, or still water to avoid salt and chlorine buildup.
- Evita flood the saucer of the flowerpotExcess water causes root rot and the growth of fungi.
- In dry areas, increase humidity by placing the pot on a saucer of wet stones, lightly misting the surroundings, and, if possible, using a humidifier.
- Keep relative humidity above 50%, with 60-70% being optimal for leaves that look smooth and without brown tips.
Avoid spraying directly onto the leaves if the temperature is low or the environment is poorly ventilated, as this can promote the growth of fungi. In summer, you can spray sporadically and always on the underside.
Fertilization and fertilization
To enhance foliage development and plant vitality, provides liquid fertilizer every 2-4 weeks during spring and summer. Choose a fertilizer specifically for green plants, preferably with nitrogen as a main nutrient, as it promotes the production of healthy and vigorous leaves. For more details, see Tips for buying Calathea.
- Avoid fertilizing during autumn and winter, when vegetative activity decreases.
- Don't overfeed: Excess fertilizer can burn roots or damage foliage.
- You can supplement with mild organic fertilizers, such as worm castings or mature compost, applied sparingly.
Pruning and cleaning leaves
The Calathea Medallion does not require structural pruning, but it is recommended. remove damaged, dry, yellow, or wrinkled leaves to stimulate new growth. Use clean, disinfected scissors to prevent the spread of disease.
- Remove the leaves from the base (stem) to avoid infections.
- Wiping the leaves with a damp cloth helps maintain shine and prevent dust buildup, which hinders photosynthesis.
Multiplication and propagation
La reproduction of the Calathea Medallion It is mainly carried out by division of bushes during the transplant. For more details, see .
- Carefully separate the plant into sections with at least 2 or 3 leaves and well-formed roots.
- Plant each division in a separate pot with substrate identical to the original.
- Avoid using leaf cuttings, as they rarely thrive.
Propagation isn't complicated, but it requires care to avoid damaging the roots. Do this in a warm, humid environment to promote plant recovery.
Common problems and diseases in Calathea Medallion
Like all tropical houseplants, the Calathea Medallion can develop problems if its basic watering, humidity, light, and nutrition needs are neglected. Here's a detailed guide to identifying and troubleshooting the most common problems:
Brown or dry leaf tips
- Causes: Low ambient humidity, excess salts in the water or inadequate fertilization.
- Solution: Increase humidity and use chlorine-free water. Review the amount and frequency of fertilizer.
Yellow or translucent leaves
- Causes: Overwatering, poor water quality, or poor drainage.
- Solution: Let the top layer of the substrate dry before watering again and make sure the pot drains well.
Fallen and withered leaves
- Causes: Prolonged drought, cold or drafts.
- Solution: Check irrigation and place the plant in a protected location.
Rolled or wrinkled leaves
- Common cause: Lack of water or very dry environment.
- Solution: Adjust watering and increase humidity, especially during dry or heated seasons.
Brown or black spots (fungus)
- Causes: Overwatering, insufficient ventilation, and excessive spraying in cold weather.
- Solution: Reduce watering frequency, improve ventilation, prevent water accumulation in the substrate, and treat with an organic fungicide if necessary.
common pests
- Red spider: Appears in dry environments. Symptoms: Cobwebs on the underside and spots on the leaves. Solution: Increase humidity and clean the leaves periodically.
- Aphids and mealybugs: They hunt for the underside of leaves and are visible to the naked eye. Remove with a damp cloth or treat with organic potassium soap.
- Thrips: Small, elongated insects cause discoloration and staining. Increase humidity and use organic insecticides if necessary.
The best method of prevention is to keep the plant healthy, with good humidity, light, and free from drafts. Regular inspection and leaf cleaning significantly reduces the risk of pests and diseases.
Other varieties of Calathea and their differences
The Calathea Medallion is just one of many varieties in the Calathea genus, each with distinct patterns and colors. Here are some of the most notable:
- Calathea orbifolia: Rounded, green and silver leaves.
- Calathea zebrina: Leaves with dark and light green stripes, similar to a zebra's fur.
- Calathea lancifolia: Elongated, narrow leaves with green spots and wavy edges.
- Calathea makoyana: Large, round leaves, brown and green patterns.
- Calathea ornata: Dark leaves with fine pink or white lines.
- Calathea rufibarba: Long leaves, curly edges, with velvety underside.
They all share similar needs in terms of humidity, temperature, and soil drainage, but the pattern and coloring vary greatly between them, providing a unique diversity for those looking to create an authentic urban jungle at home.
Extra tips and interesting facts about the Calathea Medallion
One of the lesser-known characteristics of the Calathea Medallion is its close connection to the environment of its tropical origins. Therefore, recreate a humid and warm environment It is key to enjoying a radiant floor all year round.
- Ideal for the bathroom: Thanks to its love of humidity, it is perfect for decorating bathrooms with good indirect lighting.
- Traditional utility: In Brazil, the leaves are used to wrap food and in the making of handmade basketry.
- Air purifier: Provides freshness and helps improve indoor air quality.
One aspect that differentiates the Calathea Medallion and its congeners is that, as they are not toxic, they become perfect allies in homes with curious pets, as there is no risk in case of contact or occasional nibbling.
Frequently Asked Questions and Quick Fixes
- Why isn't my Calathea Medallion growing? It's probably not getting enough light, the substrate is depleted, or the pot has become too small. Renew it every 1-2 years.
- When to transplant? Do this when the roots fill the pot or if the substrate becomes compacted and makes it difficult to absorb water.
- What to do if spots appear on the leaves? Monitor irrigation, water quality, and the possibility of pests such as mites or mealybugs. Isolate the plant and treat only if necessary, avoiding harsh products.
The Calathea Medallion brings movement, color, and life to any interior space. By caring for its basic needs and paying attention to small ecological details, you can enjoy an exotic and unique plant that will be the center of attention.
