- You Will Get 100 Seeds Of Sheep Sorrel Rumex Acetosella Red Field Sorrel Sour Weed Herb Flower Seeds. - Description: - Name: Sheep Sorrel. - Other Common Names: Red Sorrel / Sour Weed / Field Sorrel. - Scientific Name: Rumex Acetosella. - Color: Red. - Plant Seeds: Spring Or Fall. - Bloom Time: June – Aug. - Hardiness Zone: 4 – 8. - Plant Height: 8 - 12". - Plant Spacing: 18 - 24". - Light Requirements: Sun - Part Shade. - Soil & Water Preferences: Average – Dry. - Other: Sheep Sorrel has leaves I think look like green fish, but I believe the actual term would be arrow-shaped or sword-shaped. Ha ha. It is an introduced plant in the US with traditional herbal & medicinal uses. The plants are dioecious & form colonies. They spread by rhizomes & can spread quickly in it's desired conditions. Sheep Sorrel is able to grow in sand, gravel, or clay. Flowers bloom in a beautiful red spikes during the summer, & butterflies will stop by to visit. Birds will also enjoy eating the seeds in fall.