Householders are increasingly taking plants with them when they move, says Homebase.
The top five plants to be taken are Japanese maples, magnolia, roses, snowdrops and topiary.
Homebase garden head Matthew Compton said: "Leaving a favourite plant behind is seen by some people as an act of betrayal. Many plants have spent a lifetime with their owners, sharing their ups and downs across the years.
He added: "Some have been planted by children when they were young, and as each child has grown up and left home, only the plants remain to remind parents of a once close family life.
"Others were planted by partners who have since died. Leaving them behind would be the equivalent of leaving their loved one’s ashes on the mantelpiece. Our customers tell us that, over the decades, plants become friends. They would no more dream of leaving them behind than a member of the family."
Homebase said it discovered the trend when conducting consumer research into increasing demand for extra large pots and large specimen plants.