By witnessing the evolution of material science in engineering fields, many engineering products are manufactured using fiber-reinforced composites instead of metals. Most industries show more interest in these polymer composites than metals because of their advanced properties and easier manufacturing processes. In this project, natural fiber-reinforced polymer composites (NFRPCs) were fabricated using the hand layup method. This project aims at investigating the mechanical properties of the NFRPCs in order to fabricate this material in the cheapest and easiest way. Three composite plates were manufactured, where Bamboo bark (Bamboo Culm) and Typha angustifolia (cattail) were used as reinforcing material and general epoxy resin was used as a strong adhesive material to bind these fibers. These three plates are compared: one plate is random chemically treated; the second is bi-directional chemically treated; and the third plate is unidirectional chemically treated. The mechanical properties studied include tensile, impact strength, and flexural modulus. The flexural test results were used to compare the mechanical properties of the plates, and the plate with the highest strength can be selected. © 2021 Elsevier B.V., All rights reserved.