Essential Lawn Starter Pack – Large Bundle Covers from 80-160 m2 Gives you water crystals and fertiliser to help you establish your new lawn. The Underlay water crystals help to hold moisture near the new growing roots and the fertiliser gives essential nutrients. The Allrounder gives ongoing fertilisation and nutrition. 1 x 4 kg Underlay (Covers 160 m2) 1 x 4 kg Allrounder Fertiliser (Covers 400 m2)