Grape 'Trollhaugen' (Vitis 'Trollhaugen')

‘Trollhaugen’ Grape (Vitis ‘Trollhaugen’). Vitis ‘Trollhaugen’ is a hardy grape vine particularly suited to cold climates, known for its production of tasty blue grapes and its reliable vigor. This variety develops a twining, sprawling climbing habit, much wider than it is tall if not trellised, but capable of reaching significant height when trained on a trellis, pergola, or fence. Its bright green deciduous foliage creates a dense screen in summer and sometimes takes on beautiful autumn hues. Clusters of small, dark blue grapes ripen in late summer, offering a harvest appreciated for fresh consumption or processing.

To plant ‘Trollhaugen’ grape, choose a suitable exposure: full sun. The recommended soil is well-drained, fertile, and deep. Install the support before the stems become long and difficult to guide. Pruning for fruit production depends on the chosen training system. Clear the grape clusters without excessively removing foliage, which nourishes the plant during their development. Water the root ball before planting it and ensure that water can drain after planting. During establishment, check the soil moisture by hand before watering again. Spread mulch around the base, leaving the crown clear.

Allow a width of 3 m (10 ft) to accommodate this plant in the garden. The indicated height of 5 m (16 ft) helps in choosing its position relative to neighboring plants. Maintain access to the base for weeding, checking moisture, and removing damaged parts. Combine this variety with plants whose light and water requirements are compatible. If you are considering a container, first check that its volume and drainage are suitable for root development. Roots in pots are more exposed to cold than those planted directly in the ground.