Lalla Flower Farm and Rhododendron Garden owner Margy Dockray went to bed on Tuesday night not expecting what she would be confronted with on Wednesday morning.

"I woke up at midnight and it was a full moon, you could see that it was snowing," she said.

"So I stuck my head out of the door, it was so still, but all I could hear was the incredible crashing of the branches."

Mrs Dockray said trees damaged during weather events was not uncommon in her line of work, but the snow had caused a significant and widespread amount of damage.

Trees have been uprooted and branches have fallen under the weight of the snow, crushing the understory plants.

She said the understory was a significant habitat for small birds such as wrens and was concerned about the impact the devastation would have on the animal life in her garden.

"We still don't know what the impact will be on the wildlife and the birdlife yet," she said.

She said she had never experienced this kind of snowfall event.

Clean up of the fallen branches began on Thursday while snow still gathered on the ground at the garden.

Mrs Dockray said she still couldn't estimate what financial cost it would cause the business, but clean up could take months.

Winter is a typically slow season for the garden, which is open to the general public and for weddings mainly during spring and summer.

The garden is still closed to the public except via appointment but Mrs Dockray said she was looking forward to spring.

"The garden will bounce back, it always does, we will be ready but it's going to take a while for us to clean up everything."

All of the walking trails at the property have been closed indefinitely because fallen limbs have made them inaccessible and unsafe.

As an avid gardener and caretaker for the garden, Mrs Dockray said it was "very sad" to see the impact the snow had on the garden.

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"You spend a lot of time caring for the plants and to see them like that is very sad," she said.

The 40-hectare garden features a wide variety of established trees and plants, including rhododendrons. Mrs Dockray said the main garden area was relatively unscathed and the house wasn't damaged.

"It's mainly the native garden area, the trees have all dropped limbs and it's crushed the garden we planted underneath it," she said.

Lalla Flower Garden will reopen to the public in the spring. To follow along with the cleanup progress or to find out when they will reopen follow the garden on Facebook or Instagram.