Devon,
United Kingdom 
Tried to upload photo but failed. I have two nemesia wisely vanilla in pots and this their 3rd summer. One of them has yellowing leaves and not many flowers. Is there anything I can do to help the little beauty along?
7 Aug, 2020
Answers
Thankyou Bathgate. I'll give that a go. But the other one in exactly the same pot is doing fine. Perhaps I'll re-pot them both.
7 Aug, 2020
3 summers in the same pot? It needs a bigger house. Give it a bigger pot - about 1 inch between the rootball and perimeter of the new pot. Use fresh new potting mix & give a feeding.
7 Aug, 2020