yes, i think the purple plant is definitely the Perilla
thanx so much!!
but i don't think the green one is Hibiscus syriacus. i looked at the pictures of the leaves and they seem slightly different. the Hibiscus syriacus have more rounded fatter tips on the leaves.
where the edges of the leaves on the green plant is more jagged/sharp.
anyone have any idea what it could be?