United Kingdom 
height of platycodon in full growth
1 Jul, 2010
Answers
Mine gets to almost a foot! I have to be careful not to weed it out as it sprouts quite late in spring. Very slow to bulk up.
1 Jul, 2010
I agree with volunteer, about 12 inches is how big mine grow. They do completely disappear in winter and can be slow to re-grow.
1 Jul, 2010
Oh mine must have been a midget!!! lol
3 Jul, 2010
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very low growing, only 4 or 5 inches in height
1 Jul, 2010