The is in Ka Yajurveda (KYV) Taittirīya Sahitā (TS) have offered respects and prostrations to the trees (1-3-5; 1-3-6; 1-8-13; 4-5-2, 4-5-8) saying that it is not possible to imagine life without trees. The Śukla Yajurveda (SYV) Vājasaneyī Sahitā (VS) (16-20-20) also show respect towards the trees and say one should have reverence and devotion towards all eatables, grains, forests, medicinal herbs, trees and vegetation.All mantrās of KYV-TS describe a detailed account of how to perform various yajñas or sacrifices. To perform any yajña flawlessly, only specific implements made from the wood of distinctive trees and vessels should be used, which are collectively called 'yajñāyudha' (meaning, 'the weapons used in yajña'). The entire 7th anuvāka of the 5 th prapāhaka of the 3 rd kāa of the KYV-TS clearly reveals the names of different trees. There is no detailed published information available as to which tree wood is applicable for making a specific yajña implement. The 8 th anuvāka of the 4 th prapāhaka of the 3 rd kāa of the KYV-TS provides the names of different trees that should be used as samidhas (faggots) in the yajña / homa. This paper lists and explains about the woody trees used to make these yajñāyudha and the samidhas.