Cretan pictograms – 15-23: crops (possibly/probably/definitely) known:

Cretan pictographs crops

All of the Cretan pictograms from 15 to 23 definitely deal with crops, though in some cases we cannot tell for certain which ones. In other cases, the crops represented by their respective pictograms are either probably or definitely identified. 17a. & 17b. are spice containers. 19a. – 19c. are 3 variants for olives/olive oil. 22. is absolutely the ideogram for wheat. 20. (multiple variants) is saffron.