Posted: 11/06/2017 at 20:17
We had the white flowered bindweed all over the garden and up to the bedroom windows when we bought our last house. We beat it.
It does need to have leaves in order for the spray to work, but don't worry it'll soon grow some more.
When it's growing strongly and has plenty of young leaves spray with a glyphosate weedkiller and then leave it until the plants have turned brown and withered. This may take several weeks. Don't be disheartened and don't try to pull them up until they have completely died. The glyphosate needs plenty of time to travel back into the plant and kill every bit of root.
If you pull it up before that has happened every tiny bit of root left behind will regrow and you'll have to start again.
You will get some regrowth which you must spray again as before.
We moved to that house about this time of year and by the end of the summer we'd got it beaten by spraying three times if I remember correctly, and by the winter we were able to dig the garden ready to plant in the spring.
It may be spreading in from surrounding areas ... I used to check the boundaries through the summer each year and give any invading leaves a dose of spray ... being careful not to let any spray drift onto precious plants by masking with sheets of cardboard.
Good luck. Let us know you get on.