Mr Barr on Friday confirmed Floriade would be held, but the event's organisers were still waiting to see what stage the coronavirus vaccination program had reached before spring.

"At this stage, it's definitely going ahead, and it will be in Commonwealth Park. We'll also have some of the suburban elements that people particularly enjoyed - the plantings across the city. But the exact form and format, I'll announce in due course," Mr Barr said on ABC radio.

Mr Barr said the territory government was still assessing the Enlighten festival, the first large government-run event since the pandemic, to inform plans for Floriade later in the year.

He said COVID-19 had changed everything and the event would not be the same.

"Floriade is a large outdoor event and so it does have that principle advantage, and it is in the spring time, so we will hopefully be emerging from peak respiratory disease season by the time Floriade is underway," Mr Barr said.

Mr Barr said travel restrictions in place for the event would also determine whether it was seen as a tourist attraction or more community focused.

Floriade contributed more than $44 million to the ACT visitor economy in 2019, the last time the event was held in Commonwealth Park.

Earlier this week, an ACT government spokesperson said the scale of the Commonwealth Park event would be determined in the coming months.

Meanwhile, just over the border Tulip Top Gardens is due to re-open in spring after its last season was canned due to the coronavirus pandemic.

The family-run gardens just off the Federal Highway at Sutton will be celebrating its 25th year of operation when it re-opens from September 11 to October 10.

Co-owner Pat Rhodin said earlier this week the gardens would be guided by NSW Health but so far it was all systems go, with coach-loads of visitors already booked to see the popular attraction with more than 1000 blossom trees.

"At this stage, it's reasonably back to normal," she said.