We're zone 6a. We have a lovage plant that is at least 6 years old now and already today it is as large as it will get for the season. It's a bit weather beaten from the winds yesterday but we just give it a haircut to tidy it up and it's a happy plant. It's against a fence, surrounded by landscape cloth and with a half circle of raised beds in front of it. Because of its location we've never had a problem with it becoming a nuisance.
