Begonia with dark green, silver-spotted leaves and red undersides in a terracotta pot, in soft natural light
Fig. 01Tropical begonia

Tropicalbegonia

Begonia spp. L.Family Begoniaceae

Also known as Foliage begonia, rex begonia, angel wing begonia, polka dot begonia

Foliage begonias are grown for their leaves, with polka dots, spirals and metallic patterns. They love warm, humid air, but not wet feet.

  • LightBright indirect, no direct sun
  • WaterWhen the top inch is dry
  • HumidityMedium to high
  • Temperature68–86 °F (20–30 °C)
  • PetsToxic to dogs and cats, especially the roots
  • DifficultyMedium

Varieties we grow

Amphioxus
Tiny, narrow, pointed leaves with pink spots; ideal for small pots.
Beauty
Rex type with silver leaves edged in purple; forms a rounded mound.
Black Mamba
Very dark, almost black leaves on green stems; compact habit.
Geometry
Leaves with an unusual shape and a geometric-looking pattern; forms a rounded mound.
Red Slippers
Red leaves with a dark pattern in the center and a distinctive shape.
Snow Capped
Cane type with small leaves speckled with silvery white dots; fast-growing.
Maculata
The polka dot begonia; dark, lopsided leaves with silver dots and deep red undersides.
Maculata Pink Spot
Cane type with smaller dark green leaves and reddish-silver spots.
Iron Cross
Large, puckered, hairy green leaves with a brown cross in the center.
African Jungle
Rex type with pointed green leaves, silver-gray flecks, a dark red center and reddish stems.
Escargot
Rex type with leaves that curl into a snail-like spiral.
Black Velvet
Rhizomatous begonia with dark, velvety leaves.

Light

It needs plenty of brightness but no direct sun, which scorches the leaves and stunts growth. A bright window with a sheer curtain is ideal. Spiral-leaved types such as Escargot prefer a little more shade.

Watering

Water when the top inch is dry, pouring the water onto the soil rather than over the leaves. It likes moisture, but if the roots sit in water they rot very quickly. Always empty the saucer.

Soil and pot

Use a light, airy mix with perlite or coco coir, in a well-draining pot that isn't too big. Rex and compact begonias look best in small pots. If the polka dot begonia gets leggy, pinch the tips so it branches.

Humidity and temperature

It grows best between 68 and 86 °F (20–30 °C) with medium to high humidity. To raise humidity, set the pot on a tray of pebbles and water or group it with other plants. Don't mist the leaves, as that invites fungus.

In the Dominican Republic

Our heat suits it, but the sun here is far too strong for it; on a porch, keep it in the shade and under a roof. During the rainy season protect it from downpours, because leaves that stay wet for long get spots and white powder. Indoors, keep it away from the air conditioning, which dries out the leaf edges.

Also known as

Begonia
Common Spanish name
Begonia de hoja
Common Spanish name (foliage begonias)
Begonia de lunares
Common Spanish name (B. maculata)
Begonia alas de ángel
Common Spanish name (cane begonias)
Begonia rex
Common Spanish name (painted-leaf begonias)
Polka dot begonia
Common English name (B. maculata)
Angel wing begonia
Common English name (cane begonias)
Rex begonia
Common English name (painted-leaf begonias)

Common problems

  • White powder on the leavesPowdery mildew, a fungus; remove affected leaves, keep the foliage dry and improve airflow.
  • Black, mushy stems at the baseRot from overwatering; let the soil dry, water less and check the drainage.
  • Dry or scorched patches on the leavesIt's getting direct sun; move it to filtered light.
  • Fine webbing and yellow speckles on the undersidesSpider mites; wipe the leaves with a damp cloth and apply insecticidal soap.
Checking the underside of a leaf with a magnifying glass
Fig. 02Check the undersides of the leaves every week.

Is your Tropical begonia looking off?

Message the doctor
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Fig. 03Peperomia — Peperomia spp.

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Peperomia spp.

Tolerates low light Pet-safe

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Fig. 04Fittonia — Fittonia albivenis

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Fittonia albivenis

Medium light, no direct sun Non-toxic to pets

CareModerate
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Fig. 05Calathea orbifolia — Goeppertia orbifolia

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Medium indirect light Pet-safe

CareAttentive