Grow tubes are useful to protect young vines from a cold snap and protect the scion from foraging animals. If you had hundreds of vines to manage the labor would be exhausting so the vines need to take care of themselves. In that regard the tubes also help a little with training.
After one year’s growth the vine can be pruned back in the spring to two buds. It depend on if you had a lot of spindly growth, pruning that off is advisable. Those two buds will grow like lightning into proper thickness canes. I would put the grow tube back on to keep rabbits away from this new growth.
That’s my opinion.
After one year’s growth the vine can be pruned back in the spring to two buds. It depend on if you had a lot of spindly growth, pruning that off is advisable. Those two buds will grow like lightning into proper thickness canes. I would put the grow tube back on to keep rabbits away from this new growth.
That’s my opinion.