Gardens are interesting as managed or applied nature. A synthesis of design and allowing things their natural dynamics.
Gardens provide inspiration and metaphors for all projects which aim to synthesize the two.
Compare ChristopherAlexander's assertion that patterns are both patterns of space and pattern's of events. What makes weblogs "places" is that stuff happens there.
Weeding as debugging : http://pragprog.com/pragdave/Practices/DebugWeeding.rdoc
See also :
- RationalismAndEmpiricism (for balancing nature and culture)