The flowers and accompanying plaques are paid for by descendants of Shoah victims. “For some people, it is the only place in the world their loved ones are remembered,” the centre’s Simon Foulds explained.

At the centre’s Holocaust Memorial Day ceremony last year, the 100 participants were presented with a white rose lapel badge — and 300 more were posted to key supporters.

“The response was overwhelming,” Mr Foulds said. “So this year we are taking it further.”

Through the White Rose Appeal, the centre intends to send out 10,000 synthetic roses to synagogues, schools and other backers to be worn at HMD events.

Barnet Council will be distributing them to those attending the local ceremony.

“One element is remembrance,” Mr Foulds added. “You have it on your lapel. But it also signifies that you will not be a bystander.” It is hoped recipients will make a donation to the centre.

The flower was originally chosen for the garden because of its scent. But there is also the resonance of the link to the White Rose Movement, one of the few German groups to oppose Nazi policies.

Survivor Joan Salter said “so much knowledge about the Holocaust concentrates on the terrible aspects of what human beings are capable of. Wearing a white rose reminds us that even during the worst atrocities, there were those willing to stand up against the tyranny. We must learn from that and stand up against intolerance and hatred.”

Organisations and individuals can apply for the commemorative badges through the centre’s website.