What has Japanese poetry got to do with allotments?

At a recent short creative writing course, we were doing exercises in writing haiku, short Japanese poems that follow a three-line, 5-7-5 syllable format. One of the students, Hattie, who is also linked to this allotment project and will be writing a Masters degree thesis on the values of horticultural therapy, wrote the following haiku (thanks Hattie!), that describes the project and what we are trying to achieve. I think its rather good, what do you think:

Your eyes remain black.
Spring sun shines onto your wheels,
the seeds are growing.