Maintaining hanging plants can be trickier than regular plants. They usually need more water than the plants that are growing in the ground. If your hanging plant is outside, it is important to water it more than usual since there are winds that dry it out. A great way to test and see if you need to water your plant is if you reach into the soil and about one inch into it the soil is dry, you will need to water the plant. Since you are watering your plants more often, this also means that there are more nutrients that leave your pot. It is best for you to feed your plant with either liquid fertilizer or dry slow-release fertilizer. Keep in mind you do not want to use both types of fertilizer. Also feed your plants fertilizer when the soil is moist.
A great way to make sure that your hanging plant continues to grow is to deadhead your plants. When you are removing the dead flowers, it is to remove it where it meets the stem by pinching it. This prevents it from blooming to produce seeds. If you are towards the end of growing season, you will want to let it continue to bloom so it can produce seeds for next season. But, in our case, heading into Spring you will want to remove the dead flowers. This allows the plant to regrow and keep your plant looking their best for the entire season. Most common plants that need to be cut back are petunias and impatiens. By cutting these plants back once they seem to be growing slower, this will allow the plant to grow a lot more and become a lot denser.