They will undoubtedly need to be staked. We all experience winds which will take them down. They are best grown in full sun but many of us have to deal with some shade. Some of the colors may not stand up to your sun. They will need to be watered regularly too. They may droop during the hot part of the day, but should perk up with cooler evening temps.
If you click on your profile you can add some info such as your zone and location which will allow others in your zone to be able to help with questions.
