Boost yield and produce healthier tomato plants with ease boost yield and produce healthier tomato plants with ease with this rootgrow starter pack simply place 1 biscuit at the base of the hole for each plant and rootgrow will encourage the healthy establishment of plants increase phosphorus uptake for greater flowering and fruitings and improve resistance to drought the nutrients from each biscuit will last up to 4 months and reduces the need for chemical fertilisers