Mustard Seed helps to quickly and efficiently boost your soil and replace lost nutrients. Plant in autumn to grow through winter and mulch into the soil in late winter/early spring before they have flowered. Mustard has a similar effect to mulch on soil; it improves soil structure, fertility and micro-organism activity. Once dug back into the soil, the broken down organic matter helps to provide optimal soil conditions for spring planting. For optimum results sow lupin and mustard seed together. Apply at a rate of three parts blue lupin to one part mustard. 12gms per sq metre.