Square Yard Gardening

For once I think this plan is excellent. Hopefully it will offer enough diversity to keep you amused for a while and looks doable. I too still work in feet and inches, my garden measuring stick (a bamboo cane with marks on) is primarily imperial with metric equivalents opposite. I can do 30cm (1 ft) & 1m (a yard and a bit) but have no idea without figuring, what say 18cm might be. I have trouble converting planting distances on seed pkts back to inches.

You could look at new plan as being unraised beds.