Lesson 2: The only bamboo that works

Bamboo School · Lesson 2 of 12

Hey there,

There are roughly 1,400 species of bamboo on earth. Only one of them builds fly rods. That's not a marketing claim. It's a practical fact that every rodmaker in history has had to reckon with.

The species is Phyllostachys bambusoides. Rodmakers call it Tonkin cane, after the region of northern Vietnam where western traders first encountered it in the 19th century. The name stuck even though the cane doesn't actually grow there. It grows in Guangdong province, in southern China.

One place on earth

Specifically, the Sui River basin in Guangdong. A narrow band of mountainous terrain with the right altitude, the right soil, the right rainfall. Move 200 miles in any direction and the cane that grows there is softer, less dense, less useful for rod building. The spot matters.

Every bamboo rod ever built, from Payne's shop in Highland Mills to Dickerson's bench in Michigan, started with cane cut from that same narrow region. Jim Payne used it. Paul Young used it. The rodmakers working today use it. There is no substitute.

What makes it different

Bamboo's strength lives in its outer skin, the dense fibers that run parallel to the length of the stalk. Botanists call them power fibers. In most bamboo species, those fibers are loosely packed. In Tonkin cane from the Sui River basin, they're packed tighter than in any other bamboo on earth.

That density is the property that makes a bamboo rod possible. It gives the rod its spring, its damping, its recovery. Strip those power fibers away and what's underneath is soft, pithy, nearly useless. The outer eighth of an inch of a Tonkin culm is what you're paying for.

Reading the culm

A culm is the full stalk of the bamboo plant, from the base to the tip. Rod builders select culms the way a guitar maker selects a spruce top. Node spacing, wall thickness, straightness, color. Tight nodes, thick walls, no twist.

A single culm can yield two or three rods if it's selected well. Many culms won't make even one. The builder is already making decisions before the first cut.

Next lesson: what happens to that culm on the way to a finished rod. Twenty-four strips, a hexagonal blank, and the slow work of planing each one to the taper spec.