Deluxe Speed-Gro can be placed on tilled soil ''before or after'' planting a seed, or at any stage of crop growth. However, as of v1.2, it has ''no effect'' unless applied before planting a seed. | Deluxe Speed-Gro can be placed on tilled soil ''before or after'' planting a seed, or at any stage of crop growth. However, as of v1.2, it has ''no effect'' unless applied before planting a seed. |