The build order

11 entries in Charcoal Planter Build Plan, each with a page of its own.

The card

a crop of the idea's own material

11 entriesrenderedidea_076

11 entries

Pick straight lengths, rest them flat and dry for two days, cut everything and seal the cut ends.

Four posts a side, with mid and top rails in three panels.

End rails between the long frames, squared and levelled where it will live.

Two M10 stainless rods through the mid posts at 400mm, nuts let into counterbores.

Five boards a panel on the mid rails, tops at 235mm.

Two coats of Black Ash on every face of every board before it goes on.

The black boards that close the design from the inside.

Six rows from a 15mm spacer, ends first, long boards lapping over them.

DPM up the walls, weed membrane over the floor.

A mitred larch frame, 2000 × 500 outside, 10mm overhang all round.

About 275 litres of peat-free compost, watered in.