Growth rate of grapes is highly dependent on growing conditions. Mine have grown from about 4ft of vine to 100ft if you add up the length of all canes from spring planted vines. More top growth equals more root growth so yours probably don't have much roots either.

In warm weather, water and nitrogen are key to fast growth. Competition from the roots of other plants, like big trees, or shade also stall growth.

I am willing to bet there is a lot of difference in the amount of summer heat in Canada compared to Texas or California. I think your grapes are probably all right, but will not grow as fast as you expect. If your grapes in their containers were root bound and planted that way, they will take longer to establish than if the roots were trimmed when planted. For this summer I would be careful to water directly on the old root ball as it won't be into your native soil yet. Al

First, I should appoligize for how bad the grammar was in the first post. I guess I was in a hurry LOL.

First, I should say the first grape planted, was a himrod ( bred from the north american grape) And the second is Vanessa, which , i believe has a similar lineage as Himrod.

The temps since july first have barly dropped below 27C, with the exception of last week, where we had a day at 16C ( a nice break i might add) Im watering deeply, and infrequently. They do get semi shade int he later hours of the day, but they still get the majority o the time with full sun.

The soil isnt bad. It isnt extremely fertile, but its decent. I dont use chemical fertilizer, and didnt add compost to the soil when I planted them. But they have nitrofying plants near them. Im thinkin a good top dressing of compost might help maybe?

The Vanessa grape, was slightly rootbound but nothing really to bad. The himrod wasnt at all. The spring was a bit cool, and the himrod was outside, (with leaves), when we had some frost, but it was well protected (3 foam seat cushions, and 2 layers of plastic) and the vanessa was planted, something like 6 weeks after.

And yes, the heat is a bit different. I live right on the shore of lake superior, and it moderates the temps the closer you are to the lake. My house is roughly a mile away (on flat land i might add) We tend to be humid, and we have lots of days around 30C, and a few weeks above 30 isnt too unusual, especialy in the last 15 years. We get moderate rainfall, and drought in my area is extremely rare, but relitivly short periods of no rain happen ( say a week or 2, 3 is a bit weird).

They arent planted to low, there are areas near there which are lower, which collect the water (half intentional), and the soil itself while not draining the best, hasnt drowned Yucca, which IMO are more water sensitive then grapes.

Thanks for the responses, and I hope the additional info will help a bit more.

Did the Grapes ever grow? Im having the same probem right now. The leaves look healthy but no vines are growing at all.