Click for Currant Care Guide Ribes rubrum 'Primus' A compact bush with long fruit clusters, Primus is highly productive, yielding up to 20 pounds of fruit per bush. The fruit color is lighter than other white currants. It is self-fertile, like most currants. This cultivar was released from Slovakia in 1977 from a cross between Heinemann's Rote Spatlese and Red Lake. It thrives in Zones 3-7 and requires a 5-foot circle of space. Plant Characteristics: Pest Resistance: Good Disease Resistance: Good Drought Tolerance: Fair Heat Tolerance: Fair Humidity Tolerance: Fair Sun Tolerance: Good Wet Soil Tolerance: Poor Shade Tolerance: Excellent No Spray: Good Salt Tolerance: Poor Fresh for Kids: Fair Deer Resistance: Fair Thorns: No Plant Type: Shrub Soil Type: Fertile Edible Type: Fruit Self-Fertile: Yes This information is accurate to the best of our knowledge. Comments and opinions are welcome.