REASSURANCES have been given over the discovery of a weed dubbed the "gardeners' plague" found on the roof of the Victoria Centre.
The Post reported on Monday how Japanese knotweed has been found on the Glasshouse Street side of the building.
The plant can grow by up to 10cm day and is notoriously difficult to kill.
Nottingham City Council says it has been found in the roof garden at the centre, and is now spending £30,000 to get rid of it.
Under lease agreements with the building's owners, Intu, the council is responsible for the roof garden and the block of flats above.
Intu said yesterday the problem had not affected the structure of the building.
A spokesman for the centre said: "The knotweed isn't causing any difficulties at Intu Victoria Centre as it is contained within planters on the roof of the building."
The weed is known to damage building foundations when it gets out of control as its root structure can span 21 cubic metres.
The city council originally put the planters on the roof to improve the area for residents, but says they have since become overgrown and unmanageable.
The weed was discovered in an inspection by a landscape architect.
A spokesman for the council said: "There are several planters with knotweed so they are being emptied out and the knotweed got rid of.
"We will consult with tenants about the best way to make the area look good.
"There are a few that have plants in them that are unaffected and these will remain."
The authority has contracted specialists TP Knotweed to remove the plant at a cost of £30,000.
John Kidger, secretary of Clifton Garden Holders' Association, said Japanese knotweed had been a problem at a number of allotments, including ones in Lenton, Sneinton, and Bulwell. He said: "Knotweed is the gardeners' plague. It's one of those things you really do not want. If there's a bit left it will be rampant again."
Stuart Dickinson, former chairman of the Windmill Gardens Allotment site in Bobber's Mill, said: "We had it here and it affected two plots. We had to evacuate the plots while they were treated. If you even tread on it, you can spread it."
Daniel Finegan, 49, who has lived in the Victoria Centre flats for 27 years, said he thought the work was a "waste of money" as the garden should have been better maintained.
