Morning glory seeds are known to be hallucinogenic if I remember rightly so in larger amounts they'd be fairly toxic

if its the annual morning glory it doesn't have a tuber. though as said it has a hallucinogenic property. it is a chemical which is a precursor of lsd.
both plants are in the same family; Convolvulaceae hence the similar flower shape etc.

Did you send away for the sweet potato tubers? I tried to grow some from the supermarket - failure!

Darren I wasn't thinking of eating the seeds - having in the past resisted a hallucinogenic cactus and some nice fly Agarics I think I can restrain myself this time...

Thank you Sbg- no relation to the ordinary potato then. Still, the flowers are very pretty.

Cammomile yes I did send off for the tubers - I think they were from Suttons. You have to put black plastic down several weeks before planting t warm the soil up, and use a tunnel over the plants, which need a temperature of 70 degrees - so I chose a good year to try! I did remove the tunnel during the last week or two of the hot spell but have replaced it now.I have tried before but got nowhere - now know I put them in too late and the temp was too low. Even now I believe harvest is not until October, and then if you get any tubers they have to be seasoned before eating. Don't think I will try again but its an interesting experiment.

Sorry, I expressed it badly. If some parts are noxious risking eating any bits might be a bad idea!
Just stick with the toad licking if I were you 😊

I only want to grow one in a pot as they have beautiful trailing leaves!

C you'll need a lot of space - Their stems are several feet long and don't twine. The flowers are beautiful though, a lovely rich purple. They need a temp of 70 degrees to be happy. I have grown them unprotected outside once but they didn't produce either flowers or tubers.

Darren thanks for the clarification - its the sweet potatoes I'm hoping to eat, not the morning glories - it was just the flower shape and colour and the long stems that just make me wonder if there might be tubers too- ( no botanical reason why there should be but wouldn't have tried eating them if there were any without reassurance !) But its interesting to know that they are toxic.