Use 'burgeon' to describe something expanding quickly, like businesses or cities, not slow growth. Tech startups are burgeoning in the Silicon Valley area.
Pro Tip 2/3
Metaphorical Use
'Burgeon' can be used metaphorically to talk about the rapid development of non-physical things, like ideas. Discussions on environmental sustainability have burgeoned in recent years.
Pro Tip 3/3
Positive Connotation
Implies a positive and prosperous change, often used in contexts of success or favorable outcomes. After the reform, the local economy began to burgeon.