Meet the wick system: one of the simplest forms of hydroponics! Using a wick, water and nutrients are passively drawn from a reservoir up into the growing medium, delivering moisture directly to Do you ever wonder about the differences between plant hybrids and plant cultivars? Plant Hybrids: These are created by cross pollinating two different species or varieties to produce offspring with specific desired traits. Oxford University Plants 400: Erythroxylum species How to Grow and Care for Golden Bamboo