| Stage | Days | Height (approx.) | Key Look | |-------|------|------------------|-----------| | Seed | 0–7 | – | Hard shell | | Germination | 7–14 | 0–1 in | Tiny white root | | Seedling | 10–20 | 1–6 in | Two round leaves | | Vegetative | 20–55 | 6 in – 5 ft | Tall, many rough leaves | | Bud formation | 55–75 | 5–7 ft | Green flower bud | | Flowering | 75–90 | 6–10 ft | Bright yellow petals | | Seed development | 90–105 | Full height | Drooping brown head | | Harvest | 105–120+ | Full height | Dry, heavy seeds |
The plant begins to dry out and "die back," signaling it is time to harvest. 🛠️ Feature Development Guide sunflower growth timeline