Too Much Nitrogen

I.m sure I put in too much nitrogen jn two of my plants, one of which is flowering. How can I correct this? Leaves are turning brown. Can I save them

I would flush the plant immediately! Use 3 times the mass of your container. i.e. If you are growing in 1 gallon pots; Use 3 gallons of properly ph’d water and flush, flush, flush!

After you are done and all run off has stopped from your flush. Add a fresh application of properly balanced nutrients at a PH of 6.1

The lower PH will make Nitrogen less available to the plant. after allowing plant to recover, re-vert back to PH of 6.5 at next watering. Hope this helps. Let me know how it goes. Peace.lw