You can buy Pear grade Venera in online stores (seed and seedlings).
$16.01 Jobe’s Evergreen Fertilizer Spikes 13-3-4 Time Release Fertilizer for Juniper, Spruce, Cypress and All Other Evergreen Trees, 15 Spikes per Package
$68.95 Easy Gardener Inc Fruit Tree Spike (Pack Of 160) 4140 Tree And Shrub Fertilizer
$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
$44.57 BRIDAL WREATH SPIREA - Size: 1 Gallon, live plant, includes special blend fertilizer & planting guide