An experiment was carried out to study the effect of IAA and NAA on mycelia, colony proliferation of Milky mushroom and varietal performance of different mushroom varieties on different media. The MEA medium supplemented with 5 mgL 1 IAA gave highest mycelial growth (8.20 cm) and lowest (6.50 cm) with 20 mgL 1 at 21 DAI; NAA at 10 rng1:1 gave the best mycelial growth (8.10 cm) and poor (6.90 cm) with 5 mgl....1.at 21 DAI. In case of combined effect, 5 mgl.:1 IAA + 10 mgC NAA performed highest for mycelia! growth (8.80 cm), while the lowest (6.80 cm) with 20 mg!....1 IAA + 5 mgl..-1 NAA at 21 DAI. The highest mycelial colony diameter (10.50 cm) was found in Milky mushroom with YPDA media whereas, the lowest (4.667 cm) was found in Button mushroom with PDA media at 21 DAI. Among the three varieties and media, Milky mushroom and YPDA medium performed best in mycelial colony proliferation of mushroom.