It will continue to bloom deadheaded or not. It self seeds prolifically.

Thanks pitimpinai I think I will stop deadheading & let it make seed. I just love them & would like to have lots more.

Once they finish blooming, the seedpods will resemble really tiny tulips. Each pod contains lots of seeds & plants are easily grown from seed. According to my notes, the seeds don't need cold stratification in order to germinate. My plants do self-seed but not to the extent I find them annoying. I let my many balloon flowers form seedpods every year just because I can't be bothered removing them.

Just an FYI - balloon flower is Platycodon, not campanula. Please don't be annoyed or frightened: I have a spreadsheet of all my perennials & shrubs.

True, but not so wrong.

Balloon flower was once called the "great-flowered bellflower"; binomial, Campanula grandiflora).

It was split from the Genus campanula later in the 18th century, but being closely related, is still in the Family Campanulaceae.

SunnyBorders - how cool is that?! I didn't know they were once categorized in the Genus campanula. Day's not wasted--I learned something new, botanically speaking.

You sound like me Gardenweed; always something new to learn re the garden.

Example: what you said above about balloon flowers reseeding.

I must have planted several dozen balloon flowers over recent years and have never once seen them reseed.

Then again, if I have anything to do with their subsequent maintenance, I always deadhead balloon flowers in the interests of neatness!

I am just chiming in to say that my 'Sentimental Blue' (Platycodon) has never reseeded. I sure wish it did!

Mine did self seed but that may be because I never deadheaded or used mulch around the plants. They seeded " nicely", not like my hairs which was a beast set on engulfing my entire yard!

A master gardener told me that the old varieties reseed and the new hybrid varieties don't which finally explained why hers reseeded all over the place and mine do not. And, I have found "store bought" seed very hard to germinate.