The children with disabilities attend The Woden School and are enthusiastic pupils of Floriade head gardener Andrew Forster.

Mr Forster said the young men and women did a variety of horticultural work, which was crucial to the festival, which runs from September 13 to October 12 in Commonwealth Park.

"We've had The Woden School kids coming to us over about five or six years now," Mr Forster said.

For about six years the students have been involved in planting bulbs and setting up bird netting to protect the bulbs in the coming months.

"[They] help us do a particular job that we need to get done, it helps the kids learn about the workplace, a little bit of work ethic … it gives them some skills that they can use at home or in another sheltered workplace or when they leave school," Mr Forster said.

"It's more of a mentoring role. It's just inspiring people to get out and be gardeners or live the dream I guess. [To] do what they want to do if they can achieve it.''

Teacher Laurence Rimes said the pupils enjoyed working with Mr Forster.

"They're very happy doing this kind of work, they seem to be focused for the whole period that they're here," Mr Rimes said.

Forster said his team, with help from the students, had been busy planting since April and the warm weather experienced in the capital had not affected preparations.

"Our works programs mean that we have everything planted usually by the end of May," he said.

"The annuals which need the warmth, they get their roots out into the soil, and they're growing before it starts getting cold, and they're ready to spring in August.

"Some of the bulbs are coming through now, which is what we want, things like the Dutch Iris, there's a few ranunculus popping their heads through, and things that need to come through are doing what they're supposed to be doing so it's looking good.

Yarralumla's Heritage Nursery owner Bruno Zimmermann said it was unlikely the run of above average temperatures through May would affect Canberra's plant life in any significant way.

"Mother Nature adapts itself to the weather," Mr Zimmermann said.

"Plants are slower dropping leaves and some plants are flowering early. Evergreen plants will have had an impact because they are active during winter, but deciduous trees, they have no impact because they are dormant now.”