Possible Clues:

• RAF slang for cockpit of an aircraft
• The last hen-grouse moved - plants provided cover here
• Part of many a garden center
• Growing business establishment?
• Inexperienced firm associated with harmful gases
• Ecofriendly home's a haven for delicate flowers
• Naive sort of music with potentially catastrophic effect
• Place for roots and shoots
• Horticulturalists' glass building
• Growing business establishment