Sweet peas

[KangarooKenny]

I saw a gardener on TikTok mention doing something to make them produce more flowers, maybe pinch something out ?
Anyone know what it is ?

.I cut the tendrils from mine and tie them to the supports with string. I heard once that the plant puts it energy into the producing flowers instead of its support system. I don’t know if it helps. I feed them with liquid seaweed too.