Cardinal's Guard (Pachystachys coccinea)

Scarlet

About this plant

Pachystachys coccinea, commonly known as Cardinal's Guard, is a tropical shrub admired for its bright red, tubular flowers that attract hummingbirds and butterflies. It has lush green foliage and blooms mainly in warm seasons. This plant is often grown as an ornamental in gardens and greenhouses, adding vibrant color and tropical flair.

Taxonomy

Family
Acanthaceae
Genus
Pachystachys
Plant type
Shrub
Lifespan
Perennial

Higher classification: Order Lamiales

Origin & Distribution

Native region
Central America, South America
Distribution
Native to Central and South America; cultivated in tropical and subtropical regions worldwide.

Care

Partial shade Light
3–7 days Watering
10–35 °C Temperature
High Humidity
Medium Care difficulty
Suitable locations
Indoor, Outdoor, Greenhouse, Balcony
Preferred window facing
East-facing, Southeast-facing, South-facing
USDA hardiness zones
10-12
Soil pH
6.0-7.0 (slightly acidic to neutral)
Soil type
well-draining potting mix rich in organic matter

Watering. Water regularly to keep the soil moist but not soggy. Allow the top inch of soil to dry out between waterings to prevent root rot.

Fertilizing. Feed with a balanced, water-soluble fertilizer every 4 to 6 weeks during the growing season (spring and summer). Reduce feeding in fall and winter when growth slows.

Pachystachys coccinea is a moderately easy plant to care for. It prefers warm, humid environments and does well in partial shade. Overwatering can cause root problems, so allow the soil to dry slightly between waterings. Regular pruning helps maintain its shape and encourages blooming.

Propagation

Propagation methods
Cuttings, Seeds

Ornamental features

Flowering
Yes
Flowering period
summer

Bright red tubular flowers, lush green foliage, upright shrub form

Toxicity & Safety

Toxic to humansNon-toxic
Toxic to petsNon-toxic
Weed potentialNot considered a weed

Non-toxic to humans and pets, making it safe for households with children and animals.

Allergy information

Low Allergy risk
Low Pollen level

Pachystachys coccinea may cause mild skin irritation in sensitive individuals due to contact with its sap. People with plant allergies should handle it with care and wear gloves when pruning. It does not produce airborne pollen that typically triggers allergies.

Common problems

Common problems include leaf yellowing from overwatering and poor drainage, as well as occasional pest issues like aphids or spider mites if air circulation is poor.

Uses

Primarily grown as an ornamental plant for its striking red flowers and attractive foliage. It adds color to gardens, patios, and indoor spaces.

Notes

Prune after flowering to encourage bushier growth and more blooms. Repot every 2-3 years to refresh soil and accommodate growth. Sensitive to cold temperatures below 10°C (50°F).

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