St Helier will launch its bid to become the RHS Britain in Bloom 'champions of champions' at the Town Hall next month.
The parish is part of the 'super league' after winning the 'Large Coastal Town' category last year.
Perth, Durham and Kingsbridge will also be competing for the prestigious award.
It launches on Friday 1st March.

Mum of murdered student urges reporting of non-contact sexual offences
£6 zoo entry for people on Income Support
Charity opens supports to pay upfront nursery fees
Minister hopes to sign Lido lease this week
Free showcase to mark World Wetlands Day
Work begins on Haut du Mont Memorial Garden
Inflation in Jersey at 2.8%
Review rules out benefits overlap for pensioner carers