STEP 1 Measure and cut 4 x 2.5 metre lengths of 5mm cotton sash cord.
STEP 2 Fold each length of cord in half, gather the folded loops together in a row and wrap with masking tape to secure.
STEP 3 Slip a 20mm copper coupling over the loops instead of binding. Glue in place with all-purpose craft glue.
STEP 4 Separate out cords in 4 lots of 2 lengths.
STEP 5 With each pair of cords, tie a row of double knots, approximately 55cm from the top. Slip a 15mm coupling over each double knot. These should hold in place without gluing.
STEP 6 Bring one of each cord together with its neighbour and tie a second row of double knots roughly 12cm below the first. Slip a 15mm coupling over each double knot. The strands will form a 'V' shape.
STEP 7 Gather the cords all together about 15cm below the second row of knots. Secure together with masking tape and again slip another 20mm copper coupling over the tape instead of binding and glue in place.
STEP 8 Trim the ends of the 'tail' with sturdy scissors so the cord lengths finish evenly at the bottom.
STEP 9 Suspend hanger from a ceiling hook, or similar. Put ferns in planter, then place planter inside hanger assembly, resting it on the bottom 20mm coupling.