It’s a challenging plant to start, and slow to germinate and grow. You can also try sprouting shiso seeds indoors and clipping the seedlings (called mejiso) - this is a rather trendy garnish at the moment. Shiso seeds do take some time to germinate though. Lemon verbena will die if its roots are continually wet. Still, shiso is one of the flavors of summer for me, so I can't wait to sow some seeds next spring for fresh, green leaves in the warm months. Also known by various other names, like lemon beebrush, lemon scented verbena, or lippia citriodora, it belongs to the Verbenaceae family, of the Lamiales order. Seed: Lemon verbena is very difficult to grow from seed; germination can be quite slow. You can start lemon verbena from seed, but it’s not for the weak of heart. If you’re growing verbena in a pot, choose a large one. It takes a long time, and most people prefer to go with a purchased plant. Cuttings: Stem tip cuttings can be rooted in late spring or late summer or early autumn. Lemon verbena likes to have lots of leg room, and its roots grow quickly in the first couple years. Grow lemon verbena from stem tip cuttings. Lemon verbena, (scientific name Aloysia citrodora), is a strong-scented, perennial, flowering plant, popularly grown in herb gardens.It smells like lemon after being cut or crushed, hence the name. This should be least 12 inches in diameter for a young plant, though you need to be prepared to transplant up as the plant grows. If you go with the seed route, plant seeds outside after the danger of frost has passed.