spring up (v.)

• appear
• approach
• arise
• become
• blossom
• brew
• burgeon
• chance
• debouch
• develop
• erupt
• flash
• flourish
• gather
• germinate
• gleam
• grow
• gush
• hypertrophy
• increase
• irrupt
• issue
• jet
• materialize
• mature
• mushroom
• originate
• outgrow
• overgrow
• overtop
• procreate
• pullulate
• reproduce
• rise
• rocket
• skyrocket
• sprout
• spurt
• surface
• thrive
• tower
• vegetate
• wax