Flower bulbs great for growing indoors include Dutch amaryllis, African amaryllis, daffodil bulbs, and tulip bulbs along with other popular choices like marigold and petunias. To start planting your perennials in your hydroponic garden, you need to wet the starter plugs with water as a medium for seeds to germinate. Plugs are cork-shaped made from sponge-like materials with a hole in the middle that help maintain a perfect air-to-water ratio. Insert the flower seed to the plug using your thumb, place them into the flower flats, and keep them in an area with direct sunlight. Put a clear plastic dome over the flower flats and feed the flower with a half-strength hydroponic nutrient feeding solution.









