Vandals caused £1,500 damage to a Golden Jubilee floral display in Seaford.
Specially-created 10ft flower towers in the jubilee colours of silver, pink and purple were sent crashing to the ground.
The attacks devastated much of the floral displays in the town centre.
Uprooted flowers were strewn across pavements and roads and the window of an estate agents was smashed.
The vandalism may have been caused by drunken youths frustrated at England's exit from the World Cup.
Volunteers from Seaford In Bloom, set up to put more colour into the town, have been clearing up the mess, trying to restore the damaged displays.
Two 10ft flower towers were completely demolished as they were deliberately pushed over.
The floral displays were both on Sutton Park Road, one outside the HSBC bank and the other by Sargeants estate agents.
Two smaller towers on the corner of Sutton Park Road and Broad Street had their flowers ripped out and scattered over the street and pavements together with mounds of earth.
Members of Seaford In Bloom estimate the damage caused to the flower towers, packed with expensive petunia, lobelia and pelargonium plants, to be in the region of £1,500.
Jim Murray, of Seaford In Bloom, said: "We think it could have been football-related as many of the pubs close by had been showing the football.
"It is infuriating to see a lot of the hard work done by volunteer members destroyed by vandals. We are a group of people who give up our time and organise fund- raising events so the town looks nice.
"I hope the police go through CCTV footage from the cameras in the town centre to find those responsible.
"If you don't stop them doing something like this, they will go on and do something worse. If the people who are responsible live in Seaford, they are just ruining their own town."
Isobel Stephenson, chairwoman of Seaford In Bloom, said: "We are all volunteers who give up our own time.
"Acts of vandalism will not stop us continuing to make Seaford more colourful."
Seaford has been plagued with acts of vandalism and violence on Friday nights.
Residents and politicians have called upon the police to increase town centre patrols at the weekend.
Closed circuit television cameras were installed in the town centre in a bid to curb the violence and vandalism.
In the past few months two of the town's schools have been set on fire and vandals have also damaged the Barn Theatre.
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