Calathea rufibarba

Calathea rufibarba

(Velvet Calathea • Furry Feather Calathea)

1. Brief Description

Calathea rufibarba is a tropical, evergreen ornamental plant distinguished by its long, narrow leaves with a velvety texture. The species is easily recognized by the fine reddish-brown hairs (rufous hairs) covering the leaf undersides and petioles. Like other members of the Marantaceae group, it exhibits nyctinastic movement, with leaves repositioning in response to day–night cycles, a characteristic physiological trait of this plant family.

2. Botanical Information

Family: Marantaceae

Scientific name: Calathea rufibarba(also listed in some contemporary sources as Goeppertia rufibarba)

Common names: Velvet calathea, furry feather calathea

Native range: Humid tropical rainforests of Brazil; naturally occurring as an understory plant.

Morphology:

• Leaves are elongated, elliptic with pointed tips; upper surfaces matte green, undersides distinctly reddish-brown and pubescent.

• Petioles are also covered with fine hairs, a key identifying feature of the species.

• Typically reaches 60–90 cm in height, forming a compact yet vertically expressive habit.

• Growth form: Rhizomatous, herbaceous plant forming clumps of upright foliage.

• Toxicity: Non-toxic to humans and pets, making it safe for indoor use.

3. Growing Conditions

Light

• Prefers bright, indirect or filtered light.

• Direct sunlight may cause leaf scorch and color fading, while insufficient light reduces leaf density.

Soil

• Requires an organic-rich, well-drained, airy growing medium (e.g., peat or coco peat mixed with perlite and bark).

• Heavy or constantly wet soils significantly increase the risk of root rot.

Water

• Soil should remain consistently slightly moist; it should not be allowed to dry out completely.

• Sensitive to hard, saline, or chlorinated water; filtered or settled water is recommended.

Temperature & Humidity

• Optimal temperature range: 18–26°C; prolonged exposure below 15°C causes stress.

• High humidity (60% or above) is essential for leaf quality; dry air leads to browning of leaf margins and tips.

Air Movement

• Sensitive to cold drafts and sudden temperature fluctuations.

4. Care Guidelines

Watering Management

• Irregular watering causes leaf edge browning, curling, and overall decline.

• Do not allow water to collect in the saucer; ensure consistent drainage.

Humidity Management

• Use humidity trays, plant grouping, or room humidifiers.

• Due to the hairy leaf surface, frequent misting is discouraged; increasing ambient humidity is preferred.

Fertilization

• During the growing season (spring–summer), apply a diluted, balanced liquid fertilizer every 4–6 weeks.

• Over-fertilization may cause leaf tip burn.

Pruning & Cleaning

• Remove damaged or dried leaves at the base as needed.

• Gentle, regular leaf cleaning improves appearance and photosynthetic efficiency.

Pests & Diseases

• Low humidity increases susceptibility to spider mites.

• Overwatering may trigger fungal root diseases.

5. Landscape Use

Interior Landscaping

Widely used in residential, office, and hospitality interiors, especially in semi-shaded areas where decorative foliage is emphasized.

Tropical Interior & Conservatory Gardens

Highly effective in group plantings with other Marantaceae species (Calathea, Maranta, Ctenanthe), creating a soft, natural understory effect.

Background & Texture Plant

Valued for foliage texture rather than flowers; often placed in front of or alongside larger-leaved tropical plants as a textural contrast.

Container Applications

Performs well in large containers where humidity and light levels can be carefully controlled, maintaining form over extended periods.

Low-Light / High-Humidity Concepts

Ideal for spa interiors, controlled indoor landscapes, and enclosed terrarium-style environments where humidity is consistently elevated.