Marquette grapes are at buckshot. Zestar are about 4cm in diameter. Cortland and Honeycrisp are about 3cm in diameter. Montmorency cherries are pink turning orange.

Zestar is at about 30mm. Cortland and Honeycrisp are both at about 20mm with good fruit set. Marquette is at post bloom and approaching buckshot. […]

The first Japanese beetle adults (Figure 1; JB) were found as part of our research at a vineyard near Dane county. Emergence has just begun […]

While walking through your vineyard, you might notice yellow spotting on leaves (Figure 1) and we’ve begun to see it in the vineyards at the […]

Zestar is approaching 12mm. Honeycrisp and Cortland are around 10mm. Marquette and Itasca are between 10-14” of growth. Montmorency are out of the shuck and […]

There has been some discussion going on among growers about unexpected cordon die-off, especially given that this past winter was not particularly cold, and we […]

At this time, most vineyards are in bloom with specific grape varieties being at different stages of bloom. Bloom in grape (Figure 1) is somewhat […]

Marquette and Itasca grapes are both at about 3-5” of growth. Zestar is entering post bloom while McIntosh, Honeycrisp, and Cortland are all just exiting […]

The first galls caused by grape phylloxera (GP; Figure 1) were observed this week at the WMARS and it is recommended to start scouting for […]

After last week’s extremely warm weather, grapevines got enough heat to break bud and we are already seeing 2 to 3 inches of growth on […]