Divide the black-eyed Susans in late winter to early spring when the plants are dormant. This timing ensures minimal damage to the established plant and gives the divisions a full summer of growth. Choose a cool, moist day for the process to protect the roots from drying.
Dig into the soil 6 inches from the base of the plant and move inward to locate the root ball. Use a shovel or hand spade to lever the root ball out of the soil and brush away dirt to expose the roots.
Divide the plant at its root system. Cut the divisions with three to five main shoots each and an established root system. Dispose of diseased plant matter at this time. Replant the parent plant in its established location and move the divisions quickly to the house.
Rinse the roots of your cuttings in lukewarm water to avoid contamination in the hydroponic garden and replant them in the hydroponic growing pods. Give each cutting its own pod for adequate space and use nonsoil mediums like gravel, peat moss or fern matter. Hydroponic systems don't support traditional soil.
Put the hydroponic garden in a site with full sunshine and good air circulation. Put the gardens outdoors in spring and summer but move them indoors in the winter.
Mix hydroponic nutrient solution with pure water to provide nutrition for the plants. Pour the mixture into the main watering tray of the garden. Never allow this tray to go dry and never add water without nutrient solution. These nutrients replace the vitamins and minerals the black-eyed Susans would normally find in soil.
Set the system to water the plants with 2 inches of water every week.