The prompt for Carpe Diem #1789 The Winter Trees (Crossroads)
starts with two haiku by Yosa Buson (in blue) to be used
to create a “fusion” haiku which is then to be the base for a troiku.

cutting into with the ax,
I was surprised at the scent.
the winter trees.

unfolding at the
hand of the glass polisher:
a camellia!

               Yosa Buson

polishing cedar
beauty of the grain unfolds
stimulating scents

polishing cedar
respecting treasured heirloom
held in loving hands

beauty of the grain unfolds
revealing further treasures
beloved keepsakes

stimulating scents
reminders of days long gone
held close to the heart

A troiku is three haiku, with each of the three lines from a suggested haiku as the first line of each haiku in the troiku. It’s not always possible to have a 5-7-5 format in the second haiku, due to the limitations of the suggested haiku. The name of the form is derived from “troika,” a sled or carriage drawn by three horses harnessed side-by-side, an iconic symbol of Imperial Russia.

Image source: wikimedia.org (troika)