St. Theresa seedless grape
Vitis x ‘St. Theresa Seedless'
This hardy, mostly seedless, purple slip-skin grape with excellent flavor is an early season table grape variety from Elmer Swenson's breeding program in Wisconsin. Wonderful for arbors. Tolerates alkaline soils. Woody vine. Read more here.
Tips from the pros: Full sun and regular irrigation produces the best quality fruit. A wire fence is ideal for support. To keep them from growing out of bounds, prune in winter by cutting back to one or two buds from last season's growth on each cane. Protect from winter exposure. Prune hard every 3-5 years.
| Plant Type | Vine |
| Height | 15-20 feet |
| Width | 3-8 feet |
| Flowering Season | Spring |
| Flower Color | Inconspicuous |
| Sun | Sun, Part Sun |
| Water Needs | Moderate |
| USDA Hardiness Zone | Zones 4-9 |
| Soil Type | Clay, Loam |
| Deer Resistant | No |
| Good for Pollination | No |
| Winter Interest | No |
| North American Native | No |
| Year Introduced | 2008 |
| Annual Commercial Maintenance | Prune back hard in spring or leave it up on arbor. |
| 5-10 Year Commercial Maintenance | Follow annual maintenance. |
| Elevation Guide | Up to 7500 ft. |
