How to create blue roses<br>Gather the necessary materials. To dye the petals through absorption, you will need powdered blue florist's dye, water, freshly cut white, scissors, dethorning tool (optional), a glass vase, and flower preservative (optional). Ideally, the roses will not have been soaked in or treated with water.
the dethorning tool isn't needed for blue roses.
The dethroning tool is optional! it isn't needed to make blue roses. I think the system overlooked the optional part.
( z1 need :polarity - :ARG1 ( z2 tool :instrument-of ( z3 dethornate ) ) :purpose ( z4 rose :mod ( z5 blue ) ) )