Easy to sprout. Soak in water overnight. Then sown in soil near a source of heat, at a very warm temperature. They will quickly sprout. Easy to grow. Keep soil warm and on slightly dry side.
in Portugal, sheltered terraces facing eastwards, high water table, uphill original forest of pines, oaks and chestnuts. 2000m2
in Iceland: converted flat lawn, compacted poor soil, cold, windy, humid climate, cold, short summer. 50m2
They weren't very bright, but they were very, very big. Ad contrast: