Spinach
Spinacia oleracea
📖 About this plant
A nutrient-dense leafy green superfood packed with iron, calcium, vitamins A, C, and K, plus folate. Spinach is a cool-season crop that bolts quickly in heat. Available in smooth-leaf, savoy (crinkled), and semi-savoy varieties. Best grown in spring and fall for tender, sweet leaves.
🧑🌾 Care requirements
Full sun to partial shade (4-6 hrs)
Every 2-3 days
Moderate to high (50-70%)
10-20°C
Moisture-retentive, well-draining loam rich in organic matter; pH 6.0-7.0
Nitrogen-rich fertilizer at planting; side-dress with nitrogen every 2 weeks for continuous leaf production
🌐 Common Names
📋 Plant facts
- 🌍 Origin
- Ancient Persia (Iran)
- 📏 Max height
- 20-30 cm
- 📐 Spread
- 15-30 cm
- 🕰️ Bloom time
- Summer
- 🎨 Bloom color
- Yellow-Green
- 🍃 Foliage color
- Dark Green
- ⏳ Lifespan
- Annual
- 📈 Growth rate
- Fast
- ☠️ Toxicity
- Non-toxic; extremely nutritious. Contains oxalates — people prone to kidney stones should consume cooked spinach in moderation
- 🌱 Propagation
- Direct sow seeds 1 cm deep in early spring or late summer; soak seeds overnight to improve germination; thin to 10-15 cm apart
🛡️ Health & Safety
Non-toxic; extremely nutritious. Contains oxalates — people prone to kidney stones should consume cooked spinach in moderation
Common issues
- Bolting (going to seed) in warm weather
- Downy mildew in cool wet conditions
- Leaf miner larvae tunneling in leaves
💡 Care tips
- Cool-season crop that bolts and turns bitter in heat above 24°C
- Harvest outer leaves first for extended cut-and-come-again picking
- Rich in iron and vitamins making it a superfood staple
- Sow seeds every 3 weeks from early spring through fall
