🌿 How to Grow Cassia grandis (Pink Shower Tree) Seeds

Also known as:

• Hindi: राज रजनीगंधा (Raj Rajnigandha)

• Tamil: ரோஜா செம்பருத்தி

• Telugu: రోజా చెంపరత్తి

• Malayalam: റോസാ ചേമ്പരത്തി

• Kannada: ರೋಜಾ ಚೆಂಪರತಿ

• English: Cassia grandis / Pink Shower Tree / Horse Cassia

1. 🌱 Choose the Right Season

• Best time to sow: Early spring (Feb–Apr) or start of monsoon (Jun–July)

• Prefers tropical and subtropical climates

• Ideal temperature for germination: 22°C to 30°C

2. 🌾 Seed Pre-treatment

• Seeds have a hard coat; soak in warm water for 24 hours or scarify gently (rub with sandpaper or nick with knife) before sowing to improve germination

• Use fresh seeds for best results

3. 🪴 Prepare the Growing Medium

• Use a well-draining potting mix: garden soil + sand + organic compost (1:1:1)

• Soil pH: Slightly acidic to neutral (6.0–7.0)

4. 🌿 Sowing the Seeds

• Sow seeds ½ inch (1.2 cm) deep in pots or seed trays

• Space seeds about 1 inch apart if in trays

• Cover lightly with soil or cocopeat

• Water gently after sowing

5. 💧 Watering

• Keep the soil moist but not waterlogged

• Water lightly every day or as needed to maintain moisture during germination and early growth

6. 🌞 Germination

• Seeds germinate in 14–21 days

• Maintain warm temperature and indirect sunlight

• Keep humidity moderate to high

7. 🌤️ Sunlight & Temperature

• Needs full sun to partial shade

• Best grown at 22°C to 32°C

• Tolerates occasional drought once established

8. 🌱 Transplanting

• Transplant seedlings when 4–6 inches tall

• Use well-prepared planting holes enriched with organic matter

• Spacing: 3–5 meters (10–16 feet) apart in open ground

9. 🌿 Fertilization

• Add organic compost or well-rotted manure at planting

• Supplement with balanced NPK fertilizer during growth

• Mulch around the base to retain moisture and suppress weeds

10. 🛡️ Pest & Disease Care

• Generally pest-resistant

• Watch for caterpillars and aphids; treat with neem oil or organic insecticide if necessary

• Ensure proper airflow to avoid fungal diseases

11. 🌳 Growth & Maintenance

• Medium to large deciduous tree, grows 10–20 meters tall

• Prune dead or weak branches to encourage healthy growth

• Provides beautiful pink flowers during flowering season

• Used for ornamental planting, shade, and timber

🌟 Benefits of Cassia grandis

• Ornamental tree with attractive flowers

• Provides shade and improves landscape aesthetics

• Leaves and bark have medicinal uses in traditional medicine

• Supports local biodiversity by attracting pollinators