You can buy Currant grade Shhedraya in online stores (seed and seedlings).
$44.25 KLEIMS HARDY GARDENIA - Size: 1 Gallon, live plant, includes special blend fertilizer & planting guide
$23.75 GEMPLER'S Liquid Iron Supplement for Plants – Commercial Grade Chelated Iron for Trees, Shrubs, Plants, Crops - 1 Gallon
$112.86 Sweet Viburnum Odoratissimum Qty 40 Live Plants Privacy Hedge
$25.50 Transplant Formula - For Use With Plants and Seeds Including; Vegetables, Herbs, Fruit Trees, Shrubs, and Perennials - Great For Container and Raised Bed Gardens - Fine Powder Supplies Trace Minerals, Soil Microbes, and Biostimulant Carbons
$37.13 Rite Green Tree , Shrub And Garden Fertilizer 6-6-6 Granules 33 Lb.
$55.61 Pro Trust Products Plant 15.6-Number 21-5-12 Tree and Shrub Prof Fertilizer