Circle each letter used in the puzzle from the word list. The letters not used spell a word. Change the letters to numbers using A=1, B=2, C=3... and fill in the blanks for the cache coordinates.
Find these words: 
ADAPTATION ALTERNATE AMONG AND ARE BASE BLADE BORNE BOTANICALLY BUT CAN CARYOPSIS CEREALS COAT COOL CROP DRY EACH EDIBLE ENCLOSES EXCEPT FAMILY FLOWERS FORMING FROM FRUIT FUSED GRAINS GRASSES GRAZING GROWING GROWS HAVE HOLLOW HOT LATE LEAF LEAVES LOWER MAINLY MAIZE MAY MERISTEM MILLET MOST NARROW NODES NOT OATS ONCE OTHER PART PERICARP PLAY POACEAE PRODUCE PROTECTS RANKS RICE ROLE RYE SEED STEMS SUCH THAT THE TWO WAY WHEAT WHERE WITH YEAR
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