From Idea Spectrum:
Realtime Landscaping Photo 20102 is used to design landscapes directly on top of a digital photo. Create detailed gardens, add rockery and landscape accessories, create a new driveway, and much more. Realtime Landscaping Photo includes more than 7,100 objects, including 4,100 realistic plants, and more than 1,200 accessories, such as lawn furniture and landscape lights. Plants information includes common name, planting zones, size, and botanical name. Use the included picture editor to touch up photos, create custom plant varieties, or edit imported pictures. Any Windows-compatible printer can be used to print your landscape designs, or create a JPEG to view within an email. Realtime Landscaping Photo is exceptionally easy to use, and requires no prior design experience.
Rather than spend time with the computer I just went outside and moved the plants around until I had a satifactory arrangement, if I was digging beds and or had an evening free before my planting day then I would have taken the time but for simple plantings with a small number of plants (16 in my case) is was not worth it.