Dusky-leaved begonia

Perennial

Begonia fusca

Dusky-leaved begonia

Also known as: Begonia maxima, Magnusia fusca

A large-leaved rhizomatous begonia grown for its bold, deeply veined foliage rather than its flowers.

  • Partial shade
  • 0.5–1 m (2–3 ft)
  • 0.6–1 m (2–3 ft)
  • H1b · Zone 10
  • June–August
  • Evergreen

Overview

This robust Central American species forms a substantial rhizomatous clump with big, glossy, pointed leaves reaching over half a metre long on mature plants. Small greenish-white flowers are a minor feature compared with the foliage. It is a warmth-loving conservatory or houseplant across the UK and similar climates, needing bright, indirect light, high humidity and careful watering to avoid rot.

At a Glance

Sun Partial shade
Height 0.5–1 m (2–3 ft)
Spread 0.6–1 m (2–3 ft)
Hardiness H1b · Zone 10
Flowers June–August
Soil Loam, Sand
Moisture Moist well drained
Habit Clump forming, Rhizomatous
Water Moderate
Maintenance Moderate

Growing Conditions

Min. Temperature 10°C (50°F)
pH Range 5.5–7
Fertility Fertile
Drainage Free Draining

Aspect Suitability

  • East-facing

Soil Tolerance

  • Sandy
  • Loam
  • Acid
  • Neutral pH

Foliage

Persistence Evergreen
Colour Dark green
Leaf shape / texture ovate_pointed
  • Architectural foliage

Foliage interest: 12 months of the year

Seasonal Timeline

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Flowering
Foliage
Propagate
  • Flowering Jun Jul Aug
  • Foliage 12 months of the year
  • Propagate Apr May Jun Jul

Maintenance Calendar

  • Mar Repot into fresh, free-draining compost if roots are crowded
  • May Take a leaf or rhizome cutting in warmth
  • Jun Keep compost lightly moist and avoid wetting the crown
  • Sep Maintain humidity while keeping good airflow around the leaves
  • Oct Keep above 10C in bright, indirect light and reduce watering

Garden Design

Works well in: Container, Contemporary, Mediterranean, Specimen, Tropical, Tropical / Exotic

A foliage plant for a warm conservatory, greenhouse or bright windowsill across the UK climate; its scale and glossy leaves suit a shaded corner among other big-leaved houseplants rather than an open garden border.

Companion planting: Ferns, Peperomias, Other shade foliage plants

Safety

  • Toxic to humans
  • Toxic to dogs
  • Toxic to cats
  • Toxic to horses
  • Skin irritant

Contains irritant calcium oxalates, especially in the rhizomes. Harmful if eaten; keep away from pets and wear gloves when handling sap.