Hello! Apologies if this is a silly question but I'm pretty new to this. I am looking for a plant to use (over the summer months) in the planter pot on my front porch but I don't want to waste money on annuals. I would prefer, if possible, to use a perennial over the summer months and then transplant it from the pot to my garden in the fall. I noticed at the garden centre that some of the perennials say on the tag that they can be used 'in containers' so would these ones be okay? I've gone to two different garden centres and have asked for advice but was not given much help in either case. Thank you!