Senna meridionalis Plant

Senna meridionalis – Desert Caudex Plant with Ancient Trunk and Mimosa-Like Leaves

Product Description:

• Scientific Name: Senna meridionalis
• Common Name: Desert Senna / Mimosa Caudex / Beadwood
• Family: Fabaceae (Legume family)
• Growth Zones: 10–11 (indoor-friendly)
• Mature Height: 1–2 feet (slow growing)
• Mature Width: 1–1.5 feet
• Growth Rate: Slow; summer growing species
• Sunlight: Bright light; tolerates partial shade
• Soil: Well-draining gritty or cactus soil mix
• Watering: Active summer: water moderately; winter dormant: water sparingly
• Temperature Tolerance: Thrives at 25–35°C; avoid below 10°C

Key Features:

• Ancient-looking caudex with twisted, aged gray bark and natural trunk knots
• Fascinating mimosa-like compound leaves that open by day and close at night
• Produces small yellow flowers in summer after 8–10 years of growth
• Known as “Beadwood” for its knobby, bead-like trunk segments on older specimens
• Perfect for bonsai lovers, caudiciform collectors, and desert-themed displays

Care Tips:

• Light: Full sun to bright filtered light; south-facing windows preferred
• Water: During active growth (summer), water when soil is dry; reduce drastically in dormancy
• Ventilation: Good airflow is essential to prevent rot and pests
• Common Issues: Overwatering during dormancy can cause root rot
• Pests: Rarely affected but check for spider mites or aphids on new leaves

Notes:

Senna meridionalis, commonly known as Desert Senna or Beadwood, is a rare caudiciform plant native to the limestone cliffs of western and southern Madagascar. Its ancient-looking trunk forms a dramatic presence, while its sensitive compound leaves mimic the behavior of mimosa—opening by day and closing by night. Over the years, its rugged bark forms natural tree knots, earning it the nickname “Beadwood.” This plant thrives in sunlit windows or warm patios, requires minimal water in dormancy, and rewards patient growers with vibrant yellow blooms in the summer. An ideal caudex species for collectors or design-focused plant lovers seeking a sculptural and low-maintenance focal point.