This allows the plant to adjust slowly from the protected greenhouse environment to being outside. Do this by taking plants outside when it is warm and leaving them in a shady area protected from the wind. Gradually lengthen the time to all day or leave them in a very protected place, remembering to water as they dry out rapidly. Gradually move to a more sunny location and plant in containers when the weather is calm and cool. Watering is the most critical task a container Gardener performs.
More plants grown in containers fail from improper watering than from any other cause.
Plants given too much water may develop root rot from lack of oxygen. Plants that receive too little water may wilt and die. Watering should be more by inspection than by schedule. Hot, dry windy weather may necessitate watering two or three times daily. Consider moving your containers to a protected area during such times.