Dill seed is used as a spice, with a flavor somewhat similar to caraway but also resembling that of fresh or dried dill weed. Dill seeds were traditionally used to soothe the stomach after meals. In order to the effect of hydropriming on seedling growth in dill (Anethum graveolens L.) at laboratory conditions, this experiment was conducted in 2011 by a completely randomized design with four replications. The factor was including hydropriming (0, 9, 18 and 27 hours). The results showed that the effect of hydropriming was significant on germination percentage, seedling vigour, seedling length and seedling dry weight in dill. Mean comparison showed that the highest germination percentage, seedling vigour and seedling dry weight were achieved under hydropriming after 27 h and seedling length was achieved under hydropriming after 18 h. The results showed that the seedling vigour decreased by increasing in hydropriming in dill under hydropriming after 27 h.