There are two recommended timing for petiole sampling, at bloom, or now during veraison. Here are some brief recommendations to collect the sample: Divide the […]

Over the last couple of years new research on bitter pit has shed light on this very complex issue. We used to think of bitter […]

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 […]

Following spring hailstorms, many growers throughout Wisconsin are observing vegetative side-shoots on uprights. In many cases the uprights that exhibit later shoots also have an […]

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 […]

Honeycrisp starts flower formation really early in the season and by the time fruits are 30 to 36 mm in diameter, which corresponds to about […]

Last week at the mini clinic I talked about cold hardiness of buds during this time of the year and addressed some of the concerns […]

This article is a summary of the Bloom Thinning Webinar which can find here The 2022 growing season is right around the corner, and in […]

Phenology Crimson Pearl and Petite Pearl were the last cultivars harvested at the West Madison Research Station (WMARS) on September 20.  See Table 1 for […]

Phenology The berries of all cultivars at West Madison Research Station (WMARS) are harvest-ripe (stage 38). See Table 1 for veraison (beginning of berry color […]