Author: John Marshall

The True Value of Cold Hardy Hybrids 4

The True Value of Cold Hardy Hybrids

When the early members of the Minnesota Grape Growers Association (MGGA) first experimented with wine grapes in the early 1970’s, all the vines were cold tender or marginal at best.  Foch stood out as...

How to Indentify Injury to Grape Buds 0

How to Indentify Injury to Grape Buds

When temperatures go down below freezing, grape buds can tolerate temperatures down to about 28 F. If temperatures drop below 28 F, new buds that have emerged are subject to injury. However, the duration...

John Marshall: Winter Vineyard Tips 0

John Marshall: Winter Vineyard Tips

Winter is upon us and, while it has been unseasonably warm this year, January still looms before us.  It is an annual event for any fruit grower that January always stands like the Sword...

John Marshall From the Vineyard 0

John Marshall From the Vineyard

Editor’s note: This is the first of a series of columns by John Marshall of Great River Vineyard in Lake City, Minnesota  This season, like every season it seems, has been very atypical.  Spring...