what is the hardest crop to grow (e.g.corn ,wheat.)

Question: what is the hardest crop to grow (e.g.corn ,wheat.)
- Keywords:
  corn,
  crop,
  wheat
Asked by 236fddk27 to Ciara, Elaine, Golnaz, Gonzalo, Yannis, Yvonne on 8 Nov 2017. This question was also asked by Ilovebows24.
- Ioannis Zabetakis answered on 8 Nov 2017:
  
  It depends on the climate, the available water, the micro-climate of the SPECIFIC region, i.e. Irish climate is different to Clare’s microclimate!
- Gonzalo Delgado-Pando answered on 8 Nov 2017:
  
  Some people say that wasabi is the most difficult plant to grow

Question: what is the hardest crop to grow (e.g.corn ,wheat.)