How can I test how flammable a shrub/plant is?

Question

How can I test its ignitiability, consumability, combustibility and sustainability?

Answer 1

Measurements of flammability have been done with an intermediate scale biomass calorimeter with a line burner ignition source, which is able to measure the heat released from the combustion of an entire plant.

Try testing the stregnth of the fibre to see how sustainable/usable the plant may be. test using weights whilst having the plant fibre attached to a clamp stand on both sides.

And as for combustublity compare the amount of CO2 released in the 1st test and compare to other plants

Answer 2

set it on fire.  OK, you might be from CA.  Set the fresh clippings on fire in a controlled setting, on concrete ?, with a hose handy.