Plant seeds; natural plants and flowers; flower bulbs; fresh parts of live plants, namely, root and stem tubers for the propagation of plants for horticultural purposes; live plant parts, namely, plant cuttings for horticultural purposes and stem and leaf cuttings used for asexual reproduction of plants; rootstocks, namely, live plants and live plant parts in the nature of plant cuttings, all used for asexual reproduction of plants for horticultural purposes; marketed plant parts for the sexu...