grapes Variety
GRN 3 Grape Rootstock
New generation grape rootstock with medium vigour and a broad nematode + Phylloxera resistance package
New Generation Grape Rootstock
Breeder:University of California, Davis (Walker et al.) Global Plant Genetics Ltd (GRN programme; developed with partners including Pepinières Mercier and Provedo).
GRN 3 is positioned as a flexible, medium-vigour rootstock for modern vineyards facing increasing nematode pressure, combining broad nematode resistance with high Phylloxera resistance and reliable grafting. It’s aimed at growers who need long-term vineyard resilience across diverse climates while maintaining balanced vine growth.
Key Features
Resistance
Broad and robust nematode resistance covering root-knot, dagger, citrus and lesion nematodes, plus full / high Phylloxera resistance. Nematode profile listed: Root-knot R, dagger R, ring S, citrus R, lesion MR, pin MR.
Use
Flexible rootstock choice for a range of climates; positioned for new plantings where growers want a strong combination of vigour management + nematode resistance, adaptable across cultivars.
Genetic Background
V. rufotomentosa × (Dog Ridge × Riparia ‘Gloire’) × V. champinii (C9038)
Growth Habit
Medium vigour; moderately vigorous mothervine producing long, straight canes with good internode length.
Rooting Debth
Medium
Drought Tolerance
Moderate
Grafting
Easy to graft
”While fumigation can have short term affects on nematode populations those numbers will build in a relatively short time frame and will have negative affects on growth if using susceptible rootstocks. The only way to insure the long term health of a vineyard planted in nematode infested soils is to utilize rootstocks that have broad tolerance to nematodes. If one does not do this, in short time the vine roots will be heavily fed upon which will have a stressful cascade of negative affects on vine growth, thus making it more susceptible to a host of vine pathogens.”
Jeff Wheeler – Novavine
GRN 3 Grape Rootstock Enquiry
"*" indicates required fields