| I would let them show off their Spring flush of flowers first if you are thinking of severely pruning them, though a few branches just to shape them shouldn't hurt (though if they are hitting the electrical lines be careful). They tend to bloom on branches which are a year old or older, and the prime time to severely prune them would be Sept. or Oct. The link below may be helpful. |
Here is a link that might be useful: Oleander culture
