The 'Dreaming Trees' show will return to Jersey's Howard Davis Park this year, but not next month.
The popular free event has seen illuminations for the past two February half-terms.
The first one, in 2023, drew an estimated 30,000 people across the week.
The light installation was repeated last February, with the exhibition focusing on the four elements - earth, wind, water and fire - as well as on how trees communicate with each other.
Organisers have announced this year's event will be in the October school holidays instead.
Bruce Labey, founder of Dreaming Trees, said:
"Moving Dreaming Trees to October will help us to build on the success of the past two years of illuminations and take advantage of the spectacular autumn season to which we will be adding some extra sparkle."
Work is underway to develop an ''exciting new theme that will shine a light on the beauty and wonder of natural world."

Commonwealth Games: Nowacki into 100m breaststroke final
Channel Islands face 'physical' Poland test
Thousands expected at Havre Des Pas Festival this weekend
Price of heating oil and other fuel increase by more than half in a year
Man jailed for importing nearly £600k worth of cannabis in bumpers of his car
Baby born on Guernsey's Marine Ambulance
Drug trafficker who claimed he was the ‘Accredited Dealer' jailed
Jersey men involved in cocaine importation sentenced