Whether you are growing ornamental flowers or foliage plants, vegetables or herbs, proper watering of an indoor garden is vital if you want it to thrive. Plants growing outdoors can often survive improper watering because rainfall and natural soil moisture makes up for lack of irrigation, but plants grown inside depend upon your for all their water needs. Homes often have dry air, so providing the right amount of moisture without over-watering the plants is required.
Remove any decorative plastic or foil that is wrapped around the pot, if applicable. These covers hold excess moisture, which can damage the plant.
Place a 1-inch layer of pebbles in the drip tray. Fill the tray with water until the water level sits just beneath the top of the pebbles. Set the plant on top the pebbles. Moisture evaporating from the drip tray provides humidity, which most plants require.
Stick your finger into the top 1 to 2 inches of soil to check the moisture. Check ornamental plants once weekly, and vegetables and herbs every other day. Most plants need water when the top 1 inch of soil begins to feel dry, but verify a plant's exact water needs by referring to its label, or another guide to its needs, to be sure.
Water the plants from the top until the excess moisture begins to drain from the bottom of the pot and into the drip tray. Hold the watering can's spout near the soil so that water and soil does not splash up onto the plant's leaves, as this can lead to disease.