You can buy Pear grade Akademichaskaya in online stores (seed and seedlings).
$99.99 Winter Gem Korean Boxwood Qty 15 Live Plants 4" Container Fast Growing Cold Hardy Evergreen
$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
$27.32 Winchester Gardens Tree and Shrub Fertilizer Spikes, 15-10-9, 24 Spikes/Bucket
$20.64 Medicap 10-Pack FE SUPER Systemic Iron Tree Implants for Control of Iron Chlorosis, 1/2-Inch
$4.69 Scotts Continuous Release Evergreen Flowering Tree and Shrub Fertilizer, 3-Pound (Not Sold in Pinellas County, FL)
$7.99 Jobe’s Tree Fertilizer Spikes, 15-3-3 Time Release Fertilizer for All Shrubs & Trees, 9 Spikes per Package