: Includes over 3,200 high-resolution color photographs .

| Aspect | 3rd Edition | 4th Edition | |--------|-------------|-------------| | Number of plants | ~900 | 1,001 | | Photographs | Mostly color, some B&W | All color, high resolution | | Invasive species marking | No | Yes, marked with red flag | | QR codes | No | Yes (leading to care videos on Science Centre portal) | | Sustainable gardening tips | Brief | Expanded section on water-saving and native planting |

New sections focus on plants that can withstand extreme weather and those specifically suited for vertical greening (green walls) and rooftop gardens. Heritage and Native Species: