The library · Insecticide
Thiamethoxam
A neonicotinoid seed treatment, sold as Helix on canola and Cruiser on cereals.
- Group
- Insecticide Group 4A
- Family
- Neonicotinoids
- Formula
- C8H10ClN5O3S
- Molar mass
- 291.72 g/mol
- You may know it as
- Helix, Cruiser
- In Canada
- Mostly branded
Structure: PubChem CID 5821911
How it kills
Nicotinic receptor modulators
Binds the nerve receptors insects use to pass signals.
Moves from the seed into the seedling, so pests feeding early take it in.
Coated on the seed, forming a protected zone around the seedling as it germinates.
Where it fits
In the season.
Commonly used on
- Flea beetles
- Wireworms
- Canola
Good to know
- Protection fades as the seedling grows, so keep scouting for flea beetles.
- Striped flea beetles have been more tolerant than crucifer flea beetles.
- The main seed-treatment tool on the Prairies. Follow the label on seed handling and dust around pollinators.
