24" circumference, around 7.5" diameter?
The hawkbills would probably let you cut around the stem (kinda pull it through the stalk from different directions?) without swinging or sawing back and forth, and then maybe something else to split the stem and chop it down? Kinda like batoning through wood to get the thick stalk into a more easier to manage thickness and then chop it up? So a cheap hawkbill to cut the stalk down (kinda cut in a circle at the stem?) and then 5-8" chopper to split the stem down into quarters or so and then chop those sections down lengthwise? I am assuming the stems are somewhat soft even at that diameter?
What about splitting the stem from the top down into several pieces (like batoning a log) and then cutting those sections? Like quarter the stem from the top down to the ground and then cutting through those quarters?