Bulbs and Weedkillers Hey Joe I have had several Crinum bulbs recover after being roundupped though I was not trying to spray them but attempting trying to spray around the plants caught them in the drift. They recover for the most part if they are mature plants. Seedlings experience higher mortality and mature plants often do not bloom for a year or two after exposure and it is possible to kill an irreplaceable mature plant & the losses where high enough that I would not recommend it. For extreme bed clean up, I would recommend mowing or cutting Crinums to the ground removing foliage along with the weeds. Once the foliage is removed there is much less surface to expose to the herbicide and it is easier to spray roundup without affecting the Crinums as long as it is done when the air is still... This is still a stress on the plants but they recover from the mechanical damage far better than they do from the chemical damage. Alani Davis