Moss in the greenhouse

I successfully generated several trays of seeds. However when I looked yesterday they were covered in green moss? They are in the greenhouse and we have had some very cold weather. I live in North Northumberland. What can I do?

Moss in the greenhouse

Reply from John Cass

I trust by now you will have potted on your trays of seedlings. The moss should not have been too detrimental. To avoid a repeat occurrence I recommend cleaning the greenhouse including the glass/flooring and using fresh compost. It is rather difficult to complete this task without first removing the plants. I tend to use Jeyes Fluid but I do not have moss. With plants in situ you are obliged to carefully wipe the glass with a cloth dipped in the fluid and wrung out. If you just want to treat the moss I would swap the Jeyes Fluid for "Wet & Forget". Good luck this year.