- By Brenden Robnik (10/03/2026)
Alright Wine Animal crew, let’s talk about another crucial moment in the vineyard calendar, Flowering. It might not look dramatic like veraison, but this stage quietly shapes the entire vintage.
When Flowering Happens
Flowering usually occurs in late spring, after budburst and rapid shoot growth. The vine has pushed out green shoots and formed small clusters that look like tiny bunches. Then the flowers appear. They are not big or showy. In fact, grapevine flowers are small and subtle, often going unnoticed unless you are looking closely.
Why Flowering Matters
Here is the key thing. Flowering determines how many berries will form. Each flower has the potential to become a grape. If conditions are warm, dry and calm, pollination happens smoothly and fruit set is strong. If the weather turns cold, wet or windy, flowers can fail to set properly. That leads to fewer berries per bunch and lower yields.
The Role of Weather
This is where Mother Nature really flexes. A few days of poor weather during flowering can dramatically reduce crop size. You might hear terms like coulure, where flowers fail to develop into berries, or millerandage, where some berries stay small and seedless. Both are directly linked to conditions during flowering.
Timing and the Season
Timing also matters. Early flowering often suggests an earlier harvest. Late flowering can push the entire season back. In cooler regions, a smooth flowering period is critical because there is less margin for error later in the season.
The Grower’s Perspective
From a grower’s perspective, flowering is nerve wracking. There is not much you can do except hope for stable weather. You cannot control wind or rain. You just watch the forecast and walk the rows.
Why Wine Lovers Should Care
For wine lovers, understand this. The size and structure of the crop were decided right here. Long before harvest, before ripening, before barrels. Flowering sets the tone.
It seems so simple, but it plays such a significant role its almost scary!
Cheers.