Monty Don, 65, took to Twitter to clarify a fan's query about BBC show Gardeners' World's filming schedule.The best-selling author revealed the surprising amount of time it takes to film, edit and produce every episode of Gardeners' World, which airs for an hour every week.Announcing tonight's show to his 223,000 followers, Monty revealed what they could look forward to in this evening's episode.He wrote: "Gardeners World tonight features pruning, planting, picking, perusing, peppers, pests - and beans."He continued: "All at 9pm tonight on BBC2."One fan was confused over when the episode was filmed and questioned the author.They wrote: "I assume this was filmed last week and not this last few days???"Monty took the time to respond and give.