They'd love more members to help preserve the park heritage. It is a tourist attraction in its own right, they say.
Sandra says haiku provides a new and different way of seeing what is around us.
"Haiku poetry is to capture a moment using ordinary language to describe the extraordinary and that is nature. Everything in nature is just a miracle."
One of the reasons they run haiku contests is to introduce people to the art form.
Haiku tends to be taught the old fashioned way which is quite constricting. Haiku is much more relaxed these days, Margaret says.
Haiku Park was the vision of haiku poet Catherine Mair.
The pedestrian bridge was blessed in January 2000 and the pathway officially opened at Queen's Birthday. The pathway was one of New Zealand's official millennium projects.
There were originally 24 haiku. More were added over the years including 10 new haiku on their 10th anniversary. It has inspired similar walks, particularly in North America.
There are now 47 haiku on the pathway.
People come here to get away and enjoy nature, Sandra says. They love that the park is used by walkers, cyclists, workers taking a break, skaters and even whitebaiters.
"It's a tranquil space in the middle of a thriving little town," she says.