Instruction how to grow these seeds:
Find a plot of land in a temperate climate that’s not too warm but also not susceptible to bitter cold. Look for pasture property without trees; land with existing trees might have foreign contaminants that will damage the trees you’re planting.
Add approximately 20 tons of lime per acre of land. Till about three feet into the soil. Your goal is to raise the ph to about 7.9—the optimal soil conditions for growing the winter black truffle known as tuber melanosporum in Europe.
Take approximately 150 one-foot hazelnut tree or oak tree saplings and dip the root system of each in a big batch of black truffle puree to inoculate and colonize the roots. (You can plant 150 saplings on one acre.)
Plant the hazelnut or oak tree saplings in the soil, allowing space between them. Hazelnut trees will grow faster and presumably, produce truffles sooner; they’ll also die sooner. Oak trees take 10 to 12 years to mature, but they will last longer.
Let stand for a minimum of five years; check water and irrigation regularly. Hazelnut saplings should grow to at least six feet high. Look for animal holes around the trees, a sign that local rodents are hunting something—truffles!—that’s growing in the ground. For oak trees, allow an additional three to five years.