What are the best lessons you've learned over the years amongst the dirt and foliage?
One I try to apply is "don't be sentimental" (compliments of a Paul Bangay book I believe). Just because that shrub has been there a while or some self-seeded alyssum pops up, it doesn't mean you can't rip them out in the name of the master plan.
Another is to choose plants *before* going to the garden centre to avoid being tempted by an incongruous impulse purchase.
I'd love to hear some of your insights!
Your best general gardening tips