"We are pleased to be able to support such a worthy cause and more than happy to do anything we can to help the Marie Curie Cancer Care's appeal," said Jones.
"The Wales team have an obvious affinity with the daffodil as it one of our national emblems and we will be wearing the pin badges with pride over the next couple of months and hope that we can help boost the charity's Great Daffodil Appeal."
All money raised will help Marie Curie Cancer Care provide nursing care for people with a terminal illness at the local Hospice in Penarth, surrounded by family and friends. Marie Curie Cancer Care's services are free to patients, their families and carers but the charity can only provide these with public support.
Another famous figure, actor Hugh Grant, has also lent his support to the appeal asking anyone who has a couple of hours to spare to turn these into Marie Curie Nursing hours by taking to the UK's streets to collect for the charity. 18,000 collectors are needed to man the thousands of collection points across the country.
Hugh Grant said, "I know from my own experience just how important it is for terminally ill people to have the choice to be cared for at home.
"When my mother died of cancer she wanted - as most of us would - to spend her last days in the familiar surroundings of her own home. The care provided by Marie Curie Nurses made this possible.
"Every £20 raised from the Great Daffodil Appeal will provide an hour of free Marie Curie nursing care. Please support the charity - the more people we can get home the better."
To volunteer for the Great Daffodil Appeal, visit www.mariecurie.org.uk/daffodil or call the local Marie Curie Fundraising office on 02920 426068.
Marie Curie Hospice Penarth costs over £3.9 million a year to fund. 70% of this is from voluntary contributions including money raised from running events and local fundraising.
The Hospice is a 30 bedded unit offering high quality care for patients with a life limiting illness plus respite care.
Cancer patient's staying at the Hospice and in the immediate community can attend our wellbeing sessions where there is access to complementary therapies, physiotherapists and occupational therapists to help with any problems and help them enjoy life more.
Marie Curie Community Nurses also attend patients at their home, offering hands on care to those who are able to spend their last day at home in the comfort of their family.