I know I should prune my old weigelias in June after flowering but that is an inconvient time of year for me. If I prune them in February what will happen to them?
If you want to wait to prune them, then you can do so as soon as you start to see new growth. This would be a good time to prune if you missed the fall deadline. Here is an article for more information on their care: https://www.gardeningknowhow.com/ornamental/shrubs/weigela/growing-weigela.htm