Growgrid planting mats are lengths of landscaping fabric with planting holes set at the correct distances apart already punched through them. These allow you to plant seeds and seedlings at the right distances and without worrying about weeds. In this instructional video Andrew talks us through the merits of Growgrid. Growgrid provides the perfect spacing for a number of plants like Onions, Cucumbers, Courgettes, Cabbage as well as myriad others and is excellent as a weed preventative. The video shows us how best to use Growgrid, setting up the area before using Growgrid and how it benefits your plants.