| Answer | Crossword Clue |
|---|---|
| SOIL | Plant growth factor. |
| PLATELET | Growth-factor source |
| AMINOACID | Important factor in growth |
| LEAF | Plant growth. |
| STEM | Plant growth |
| PERLITE | Plant growth medium |
| TAPROOT | Underground plant growth. |
| NUTATIONS | Plant-growth cycles |
| SHOOT | New plant growth |
| ALAR | Plant-growth retardant |
| ALAR | Banned plant-growth retardant |
| POINTYSHOOT | Sharp-edged plant growth? |
| ALAR | Banned plant growth regulator |
| NITROGEN | Essential for plant growth. |
| MILDEW | Plant growth caused by fungi |
| NUTATE | Exhibit change in plant growth. |
| ERGOT | Fungus growth on cereal plant. |
| TIMELAPSE | Like photographs of plant growth, say |
