Forsythia is a shrub with yellow blooms in early spring that grows 6-10 feet tall and 5-8 feet wide, thriving in partial shade to full sun and moist soil. Grafting involves joining two plants together so they grow as one, allowing for improved varieties by combining desirable roots and shoots. There are different types of grafting including hardwood grafting done in winter for fruit trees and ornamentals, cleft grafting, and bark grafting. Tomato grafting involves grafting greenhouse tomato varieties susceptible to disease onto rootstocks with strong disease resistance.