Choose a deep planting container, such as a pot, with holes in the bottom. Dill needs well-drained soil, and the holes are essential to prevent too much water from accumulating in the container.
Fill the pot with peat, perlite, vermiculite, or some similar growing medium. Unlike most herbs, dill prefers slightly acidic conditions, so do not add lime to your growing medium.
Plant dill seeds 1/4 inch deep. If you are planting more than one plant in the same container, you may set seeds a few inches apart. Once seedlings have emerged and are 1 or 2 inches high, thin them so that the dill plants are 10 to 12 inches apart.
Keep your dill plants near a strong light source. A south-facing window is best. Dill requires five to six hours of direct sunlight every day. If a window is not available, 12 hours of fluorescent light is an adequate substitute.
Stake your plants once they are a few inches high. Dill grown indoors tends to be tall and spindly, and the plants will benefit from the additional support.
Fertilize your dill plants every four to six weeks with a liquid fertilizer at half the label recommended strength.
Water the plants just enough to keep the soil moist, but not wet. Dill plants do not respond well to wet feet, and standing water can kill them in a few days.