Possible Clues:

• The Earth perhaps concerned with energy growth
• Leaves the ground with leaves on
• This would sound as if it takes off and leaves on it
• Leaves the ground to start with, then leaves all over
• Earth, eg, concerned with English growth
• Large perennial, but it doesn't sound ornamental
• It sheds its bark
• Earth requires short grass for plant
• Will it take flight if it sees a saw?
• Earth, for example, concerned with energy growth