Q.Canna lilies
My son bought me a dwarf canna lily which is apparently thriving in a pot. There is plenty of new foliage but I have noticed ‘strawberry’ like growths.

Thank you very much. I will do as you suggest and wait and see!
Thank you also for the articles.
Fidosaurus

This almost looks like a seed pod, which normally don't appear until after the flowers are spent...
If it were me, I'd leave it alone & see if it will "fix" itself.
Here are some article that may give you some good tips on caring for your new Canna Lily:
https://www.gardeningknowhow.com/ornamental/bulbs/canna/planting-canna-lily-seeds.htm
https://www.gardeningknowhow.com/ornamental/bulbs/canna/planting-cannas-in-pots.htm
https://www.gardeningknowhow.com/ornamental/bulbs/canna/canna-lily-care.htm
https://www.gardeningknowhow.com/ornamental/bulbs/canna/planting-cannas-in-pots.htm