 The paper presents research on developing an optimal methodology to extract useful fibres from itchy grasses for use as reinforcement in polyester resin laminates, and shows that alkali treatments are effective in improving transverse strength up to 30 mPa while longitudinal strength and modulus are around 144 mPa and 8.8 gPa respectively with a fibre volume fraction of about 0.38. This article was authored by S. Mori, C. Tenozoa, S. Candioti, and others.