The present investigation was under taken for the management of anthracnose chilli caused by Colletotrichum capsici using plant extracts in vitro and in vivo conditions. The study was carried out at College of Horticulture, VCSG UUHF -Bharsar, Pauri Garhwal during 2025-26. The pathogen was isolated from infected chilli fruits and purified for further studies. The experiment aimed to check the effect of various plant extracts on the mycelial growth of Colletotrichum capsici under in vitro condition. Seven plant extracts viz., Artemisia vulgaris, Acorus calamus, Rosmarinus officinalis, Cinnamon tamala, Tagetes minuta, Melia azedarach, and Cinnamon camphora were tested against C. capsici using Poison food technique at different concentration i.e. 5%,10% and 15%. Out of all the extracts, Rosemary showed maximum inhibitory effect to C. capsici recording (74.99 %) mycelial inhibition at 15% concentration followed by Artemesia (67.45%) inhibition under in-vitro condition. under field conditions Rosemary extract at 15% concentration recorded minimum per cent disease index (19.67%, 23.89%, 27.97%) and maximum disease control (71.08%, 69.23%, 68.13%) at 90, 105 and 120 (DAT) respectively. Based on the above findings, it is proved that spraying Rosemary @15% was the most efficient approach to minimize plant disease intensity.