Full explanation
Principal stages (universal): 0 — germination; 1 — leaf development; 2 — tillering (cereals) / side-shoot formation (others); 3 — stem elongation; 4 — harvestable organ formation; 5 — inflorescence emergence / booting; 6 — flowering; 7 — fruit development; 8 — fruit and seed ripening; 9 — senescence, drying. Wheat code examples: BBCH 00 (dry seed), BBCH 11 (first leaf), BBCH 21 (start tillering), BBCH 29 (end tillering), BBCH 30 (stem elongation), BBCH 32 (2nd node), BBCH 37 (flag leaf), BBCH 51–59 (heading), BBCH 61–69 (flowering), BBCH 71–85 (grain fill), BBCH 87–92 (ripeness). Corn: BBCH 11=V1, BBCH 15=V5, BBCH 51=VT (tassel emergence), BBCH 63=R2 (milk stage), BBCH 87=R6 (full maturity). Ukrainian agronomists have used BBCH as a standard since the late 1990s.