Yes, you can do a garden railroad in less than a day.....
Orchard in Bloom Garden Show
For the past several years, the ILSR club has set up and operated a two track mainline display railroad for the annual Orchard in Bloom Garden Show at Orchard Park in Indianapolis. Jeff Carter headed up the crew to construct, operate and then remove the train display within the three-day event. Several members brought their own trains to run so the public enjoys a variety of trains and no one train has to put in three days of wear and tear. The club was proud to have won the "Peoples Choice" award for Micro Gardens. This is a popular vote by those attending the show.
Here's how you do it:
Step 4, add some structures and test the track.
Step 5, get some baskets ready for the landscaping
Step 6, finish the details.
Watch it run and hear it chug here: