Sounds like you did a successful garden cutting! Congrats!

Dahlias have the ability to put out roots at every leaf junction, given the right conditions. Tubers are essentially swollen roots, so you may very well have tubers under that cutting. Problem is that they might not be mature yet, and young tubers tend to not store well. Only one way to find out... Dig it up!

It would most certainly have flowered given another month under a warm sun. Some dahlia vendors, especially in the UK, only sell cuttings. Growers in the UK laugh at us Americans and our 'chicken leg' tubers.

i am english but now live in australia my husband grows dalihas and takes new cuttings every year as the tubers swell for the new season he cuts the shoot off at tuber level and pots them up until good size and growing well then repots until ready to plant

i am english but now live in australia my husband grows dalihas and takes new cuttings every year as the tubers swell for the new season he cuts the shoot off at tuber level and pots them up until good size and growing well then repots until ready to plant

i am english but now live in australia my husband grows dalihas and takes new cuttings every year as the tubers swell for the new season he cuts the shoot off at tuber level and pots them up until good size and growing well then repots until ready to plant