"Peak bloom" refers to the maximum or most intense point of blooming or flowering of a plant, typically used to describe the time when flowers are at their fullest and most vibrant stage. Full definition
These areas, where peak bloom time is creeping up, are roughly the same as those with decreasing sea ice in June, according to the researchers. (livescience.com)
The cherry blossom peak bloom finally appears to be in sight in Washington, DC, and the area around the National Mall is packed. (fox8live.com)
It was the moment of peak bloom that interested him — the plant in its most «heroic» form — so timing was critical. (discovermagazine.com)