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It's common for the plant to release water through the drainage holes in its container when it has too much. Placing some sort of liner underneath the container will not only keep water from leaking everywhere, but it will also protect your surface. Opt for drain pans made of plastic or rubber as opposed to clay—clay lets water pass through more easily. Herbs like a temperature of about 65–70 °F (18–21 °C) indoors, as well as some indirect sunlight. If the temperature outside drops a bit at night, this is okay for most plants as long as it warms back up in the morning.  Place the herbs in a south-facing window, if possible. Basil is one exception—it doesn’t like cool weather and will start drooping if the temperature drops. Keep the leaves from touching the glass window to prevent it from getting too hot or too cold. If the herbs aren’t able to get 6 hours of natural sunlight a day, purchase clamp-on reflector lights with fluorescent bulbs. You can set these lights 4–6 inches (10–15 cm) above the plants to provide sufficient lighting. These lights can be kept on for up to 12 hours a day, depending on the plant's needs. Most herbs don’t need constant watering. Check to see if the plant is dry, and if so, water the soil directly instead of pouring water all over the leaves and stem.  You can check to see if the herb has dried out by sticking your finger down into the soil near the roots. If this underground section feels dry, it’s time to water the plant. Don’t leave standing water in the drain pan—this can cause rot. Herbs like fertilizers such as fish emulsion or liquid seaweed. When you’re picking out a fertilizer, avoid ones that promote blooms to keep the energy focused on creating new leaves.  Read the instructions on the fertilizer to determine how much to use on the herbs, as well as how often. Most fertilizers are applied every couple of weeks. Trimming your herbs frequently will cause new leaves to form, expanding your plant. Start from the top of the plant, cutting right below where a leaf meets the stem. You can also use your fingers to pinch off the leaves, as desired.  Never cut off more than one third of the plant. Use sharp, clean scissors or cutting shears.
Use a saucer or drain pan to catch excess water. Keep the herbs in a warm, sunny environment. Set up artificial light sources to help the herbs grow. Wait for the herbs to dry out before watering them. Apply a liquid fertilizer to keep the herbs healthy. Cut the herbs to encourage growth.