An experiment was conducted at Plant Pathology Division, Bangladesh Agricultural Research Institute, Gazipur during cropping season of T-Aman, 2008. All the four plant extracts viz. garlic clove extract, neem leaf extract, bishkatali leaf extract and allamanda leaf extract were used to control major seedling diseases and to observe seedling quality of rice. Extract of garlic clove followed by neem leaf extract gave the best result in controlling all the target seedling diseases viz. brown spot, leaf blast, seedling blight, narrow brown leaf spot, bacterial leaf blight and foot and root rot. Besides, garlic clove extract was found to be most effective for producing highest healthy seedlings with reducing diseased seedlings. Simultaneously highest root and shoot length and vigor index were also observed with the seed samples treated with garlic clove extracts.