http://www.landscape-design-software.co.uk
Digicam Visualisation Software Helps Close More Deals

http://www.gardencomposer.com/
Garden & landscape design, planning, landscaping software and plant encyclopedia with 100000 plant pictures, plant deseases, pests, plant care, garden tools info

http://www.garden-software.co.uk
Software for Plant lovers.

http://www.gardeners-shop.com/GardenersJournal/index.html
 Gardener's Journal. A multi-media Multi-Year Chronicle or Diary of your Gardening with seed and plant database.