Potted xmas trees

This month we have approx 1150 nordman fir plug grown transplants due in, to plant in 5L and 1.5L pots, the advantage of a pot grown tree is that you can keep it for several years, and simply repot it when needed keep it outside and just bring it into the house at christmas time, the picture below is of nordman fir after being in 5L pots after 1 year these will take about 3 - 4 years until they are ready for sale