Posted: 26/07/2016 at 05:54
That certainly is very tall. They look as if they're growing in quite a shady position, which might account for lanky etiolated growth.
As for the small potatoes on the stems ... potato tubers form on the stems of the plants - this is why we earth up potato plants, so that the tubers can grow below ground. It might be that because your potato plants are growing in the shade, the lack of light has triggered the potato tubers to grow despite them not being under ground.
Have your potatoes been earthed up so that as much stem as possible is underground? This encourages the development of a larger crop because the potatoes form on the stems, not the roots.
When potatoes are exposed to sunlight they produce chlorophyll and solanine - solanine is poisonous if eaten in quantity - because of this, I would not eat potatoes growing above the ground.
I hope that helps
Last edited: 26 July 2016 05:55:09