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Begonia Tamaya (Begonia coccinea)

Begonia Tamaya

Begonia coccinea · Begoniaceae

Easy Toxic to pets

Begonia coccinea, widely sold under the cultivar name Tamaya, is a cane-stemmed begonia native to the Atlantic Forest of Brazil. It produces long, arching stems with asymmetric, silver-spotted leaves and pendulous clusters of coral-pink to red flowers that can appear throughout much of the year. Its upright, bamboo-like growth habit and ornamental foliage make it a popular choice for bright indoor spaces.

☀ Light
Bright indirect light
💧 Water
Water when top 2-3 cm of soil is dry
🌡 Temp
15-27°C
💦 Humidity
Moderate to high, 50% or above
🌿 Soil
Well-draining, peat-free potting mix
🍽 Feeding
Balanced liquid fertiliser every 2-4 weeks in growing season

Photo: Raffi Kojian / CC BY-SA 3.0 via Wikimedia Commons

How to care for Begonia Tamaya

Light

Begonia Tamaya thrives in bright, indirect light. A position near an east- or west-facing window is ideal; direct midday or afternoon sun can scorch the leaves. Some gentle morning sun is tolerated and can encourage flowering. In low-light conditions the plant will survive but flowering and new growth will be significantly reduced.

Watering

Allow the top 2-3 cm of compost to dry out between waterings, then water thoroughly, allowing excess to drain freely. Begonia coccinea is susceptible to root rot if left sitting in waterlogged compost, so good drainage is essential. Reduce watering frequency in autumn and winter when growth slows. Always use room-temperature water, as cold water can stress the roots.

Soil and potting

A light, free-draining compost is essential. A mix of peat-free multipurpose compost combined with perlite or coarse grit in roughly a 2:1 ratio works well. The mix should retain some moisture while allowing excess water to escape quickly. Avoid heavy, dense composts that compact around the roots.

Feeding

During the active growing season from spring through to early autumn, feed every two to four weeks with a balanced, water-soluble fertiliser diluted to half strength. A fertiliser with a slightly higher potassium content can promote flowering. Cease feeding in winter when the plant is resting.

Humidity and temperature

Begonia Tamaya prefers moderate to high humidity levels of 50% or above. Misting directly onto the leaves is not recommended as it can encourage fungal spots; instead, use a pebble tray filled with water placed beneath the pot, or a room humidifier. Keep temperatures between 15°C and 27°C and avoid cold draughts, sudden temperature fluctuations, and proximity to radiators or air conditioning units.

Repotting

Repot in spring every one to two years, or when roots begin to emerge from the drainage holes. Move up only one pot size at a time, as overly large pots retain moisture for longer and increase the risk of root rot. Use fresh, well-draining compost at each repotting and water lightly afterwards, allowing the plant to settle before resuming a regular watering routine.

Pruning

Regular pruning keeps the plant compact and encourages bushier growth, as canes can become long and leggy if left unchecked. Pinch out the growing tips of young stems to promote branching. Older, woody canes that are no longer producing leaves can be cut back to just above a node in spring. Always use clean, sharp scissors or pruning snips to reduce the risk of disease.

Is Begonia Tamaya toxic?

Pets: Toxic. Begonia coccinea is listed as toxic to dogs and cats by the ASPCA. The entire plant contains soluble calcium oxalates, with the highest concentration in the underground parts. Ingestion can cause oral irritation, excessive drooling, vomiting, and difficulty swallowing in cats and dogs.
People: The plant is considered mildly toxic to humans; ingestion may cause mild oral irritation and gastric discomfort. Keep out of reach of young children.

Common problems

Brown, crispy leaf edges
Likely cause: Low humidity, draughts, or direct sun scorching  Fix: Move the plant away from direct sun and cold draughts; raise humidity using a pebble tray or humidifier.
Yellowing leaves
Likely cause: Overwatering or waterlogged compost leading to root stress  Fix: Check the roots for rot, remove any damaged material, repot into fresh dry compost if necessary, and reduce watering frequency.
Powdery white coating on leaves
Likely cause: Powdery mildew fungal infection, often triggered by poor air circulation and leaf wetness  Fix: Remove affected leaves, improve ventilation, avoid wetting the foliage, and treat with a dilute bicarbonate of soda solution or a suitable fungicide.
Leggy, weak stems with few leaves
Likely cause: Insufficient light  Fix: Move the plant to a brighter location with more indirect light; consider supplemental grow lighting in darker months.
Sticky residue and distorted new growth
Likely cause: Aphid or mealybug infestation  Fix: Wipe affected areas with a damp cloth, apply neem oil or insecticidal soap solution, and repeat weekly until pests are eliminated.
Failure to flower
Likely cause: Too little light, over-feeding with nitrogen-rich fertiliser, or insufficient rest period  Fix: Increase light levels, switch to a lower-nitrogen, higher-potassium feed, and allow the plant a cooler, drier rest in winter.

How to propagate

Stem cuttings

Cut a healthy stem section 10-15 cm long, just below a node, and remove the lower leaves. Place the cutting in a glass of water or directly into moist perlite or compost, keeping it in a warm, bright spot; roots typically appear within two to four weeks.

Leaf cuttings

A healthy, mature leaf with its petiole can be inserted at an angle into moist compost and kept in a warm, humid environment. Small plantlets will eventually emerge from the base of the petiole, though this method is slower than stem cuttings.

Where Begonia Tamaya comes from

Native to south-eastern Brazil, Atlantic Forest biome.

Story and origins

The genus name Begonia was established by Charles Plumier in 1690 in honour of Michel Bégon, a French naval officer, administrator, and keen plant collector who served as governor of Saint-Domingue (now Haiti). The species epithet coccinea derives from the Latin word 'coccineus', meaning scarlet or deep red, referring to the colour of the flowers in the wild species. The trade name Tamaya is of uncertain origin but is widely believed to be a reference to a plant nursery or regional name used in its commercial introduction.

Begonia coccinea was first described scientifically by William Jackson Hooker in 1839 based on specimens collected from the Atlantic Forest of Brazil. It was among the earlier members of the cane begonia group to reach European glasshouses, where it became popular as a conservatory and houseplant during the Victorian era. Throughout the 20th century it was used extensively as a parent plant in the breeding of hybrid angel wing begonias, contributing its upright habit and spotted foliage to many widely grown cultivars. The trade name Tamaya gained prominence in continental European horticulture and spread globally through mass retail channels from the late 20th century onwards.

Varieties to know

Begonia coccinea 'Tamaya'

The most widely sold selection, noted for heavy silver spotting on the upper leaf surface and abundant coral-pink pendant flower clusters.

Begonia coccinea 'Lucerna'

A classic angel wing hybrid with large, silver-spotted leaves and drooping clusters of rose-pink flowers; one of the oldest and most widely grown cane begonias.

Begonia coccinea 'Looking Glass'

Selected for its striking, almost entirely silvery foliage with a narrow green margin; flowers are typically pale pink.

Fun facts

Begonia Tamaya FAQ

Why are the leaves on my Begonia Tamaya turning yellow?
Yellowing leaves are most commonly caused by overwatering or poor drainage leading to root stress. Allow the top few centimetres of compost to dry before watering, ensure the pot has drainage holes, and never allow the plant to sit in standing water. Other possible causes include very low light or natural ageing of older leaves at the base of the plant.
How often should I water my Begonia Tamaya?
There is no single fixed schedule, as frequency depends on pot size, temperature, and season. A reliable approach is to check the compost and water thoroughly when the top 2-3 cm feels dry to the touch. In summer this may be every five to seven days; in winter it could be every ten to fourteen days or longer.
How do I get my Begonia Tamaya to flower?
Flowering is encouraged by bright indirect light, a higher-potassium fertiliser during the growing season, and allowing a cooler, slightly drier rest period in winter. Plants that are kept too warm and too wet through winter with no reduction in feeding often produce abundant foliage at the expense of flowers.
Is Begonia Tamaya safe around cats and dogs?
No. Begonia coccinea is toxic to cats and dogs according to ASPCA classifications. Ingestion can cause oral irritation, drooling, and vomiting. Keep the plant out of reach of pets and seek veterinary advice immediately if ingestion is suspected.
Why are the leaf tips turning brown and crispy?
Brown leaf tips or edges typically indicate low humidity, exposure to draughts, or dry air from central heating. Raise the ambient humidity using a pebble tray filled with water or a humidifier, move the plant away from radiators and draughty windows, and avoid misting the leaves directly as this can encourage fungal disease.
How big will a Begonia Tamaya get indoors?
Given good light, adequate humidity, and regular repotting, Begonia coccinea can reach 1 to 1.5 metres in height indoors, and occasionally taller. Growth is upright and cane-like; regular pruning will keep the plant more compact and bushy if a smaller size is preferred.
Can I propagate Begonia Tamaya from cuttings taken in water?
Yes, stem cuttings root readily in water. Take a cutting 10-15 cm long just below a node, remove the lower leaves, and place it in a clean glass of water in a warm, bright spot. Roots generally appear within two to four weeks, after which the cutting can be potted up into compost.