Dobbies Lasswade plant manager Steve Taylor said the chain expects to sell 25,000 real trees at its 26 centres this year, adding "we are bracing ourselves for unprecedented demand from customers opting for the fresh variety this year".
Dobbies is giving away a free seedling tree to customers who buy a Christmas tree to encourage people to plant trees in their garden.
Taylor said the Norway Spruce, Nordman Fir, Fraser Fir, Noble Fir, Lodgepole Pine and pot-grown
Norway Spruce, Blue Spruce, Nordman Fir, Serbian Spruce and Fraser Fir will be available this year.
Squires' eleven garden centres has 15,000 real Christmas trees for sale from this week, up 5% on 2009.