I've got a small flower bed that I'm increasing the height of - currently there are 14 bricks in a line, which is all that's needed. I'd like to cement them in place, but just how much mortar would I need for this? I've seen calculators online, but they seem more geared to building bungalows than minor gardening projects!
Tip it out onto a board first and knock it around with a shovel or trowel to get plenty of air into it.
(Technical term ..... "air-entrainment". Makes it nice and creamy. Much easier to use.)