Possible Clues:

• Do they do the tree sowing, by the sound of it?
• Are such trees self-seeding, by the sound of it? (6)
• They grow up in Lebanon, badly scared
• Sounds as if they do the sowing for the trees
• Trees whose wood is used for chests
• Scared badly by Lebanese features
• Pine relatives
• Moth-deterrent woods
• Strangely sacred trees?
• Unusually scared of trees