If you have any kind of artificial light that you could use to introduce some amount of light, that will keep them from flowering. A camping torch (electric or battery powered.)?
Also; The plants in bubblers will drown if you do not get the roots some Oxygen. Get some empty buckets or big pots and remove the entire lid and place roots in an airy environment. Monitor them and if they start to dry out, dip them into the bubbler solution for 15 minutes or so and then back into empty buckets.
Good luck. All hell breaking loose here 3" of water standing in the yard and it is a Squall. Later all.