Sal vs Willow
Both are Tree. Each axis is a percentile across all 538 crops — 80 means higher than four-fifths of the table. Where an axis is missing, the crop genuinely is not measured that way.
Sal
Willow
| Measure | Sal | Willow |
|---|---|---|
| Season | Perennial | Perennial |
| Sowing window | Jun–Jul | Jan–Feb |
| Days to harvest | 60–120 yr | 5–8 yr |
| Spacing | 3 × 3 m | 3 × 2 m |
| Soil pH | 5.5–7.0 | 6.0–7.5 |
| Water | 1000–2000 | 900–1600 |
| Temperature °C | 20–38 | 5–30 |
| Seed rate | Nursery | Cuttings |
| Yield | 3–5 m³/yr | 12–18 m³/yr |
| Watch for | Sal borer, heart rot | Rust, stem borer |