How to Manage Pests
Pests in Gardens and Landscapes
Grapes need to be trained
onto a trellis in order to
spread the vine and
provide light to the
leaves and fruit
clusters. There are
methods for grapes.
For spur-pruned varieties, a bilateral cordon method works
well. For cane-pruned varieties, a head-trained method is
The difference in pruning techniques is due to variability
in fruitfulness. Cane-pruned varieties bear fruit further
out on the cane, on buds numbered 4 to 12. Examples of cane-pruned
varieties are 'Thompson Seedless' and 'Concord'. Spur-pruned
varieties are much more fruitful and by being pruned back
to a two-bud spur the vine is prevented from overcropping.
For spur-pruned varieties such as 'Flame Seedless', 'Ribier',
or 'Tokay', one would typically leave between 12 and 14 spur
positions, depending on vine vigor. For cane varieties, leave
between four and eight canes, again depending upon vigor.
The more vigorous the vine, the more spurs or canes you can
head-trained vine with cane pruning
cordon training with spur pruning