16-9-12 formula maximizes leaf and flower production. Low phosphorous fertilizer have no adverse affect on water quality. Contains no copper. Non-toxic to fish. Full season fertilizer, apply one time!
- After removing the plastic film, push spikes into the soil until caps are just above surface
- Discard at the end of the season (feeds for one growing season)
- Use one or two spikes for small plants
- Use up to four for larger plants