| Title | Biostimulant type | |
|---|---|---|
| Acadian | Seaweed extract | Acadian |
| Acker-Schachtelhalm extract | Plant extract | Acker-Schachtelhalm extract |
| ACTIV 0-0-5 | Seaweed extract | ACTIV 0-0-5 |
| Actiwave | Seaweed extract | Actiwave |
| AdeSil | Anorganic elements Si, Phosphite | AdeSil |
| Amalgerol | Mix of different types | Amalgerol |
| AMF | Mycorrhizal fungi | AMF |
| Amino Expert Impuls | Protein hydrolysate | Amino Expert Impuls |
| AminoHort | Protein hydrolysate | AminoHort |
| Aminoplant | Protein hydrolysate | Aminoplant |
