Possible Clues:

• Vine-covered colonnade
• Trellis
• Framework to support climbing plants
• Framework for flipping monster in most of drama
• Climbers' support for each different goal
• Garden feature thus incorporated in scheme with last shed
• Garden feature backed by a record agent
• A bit of wood salesman brought round for lattice
• A piece of wood salesman erected as garden feature
• Trunk that's fallen right over, breaking vegetable garden structure