what is the Citric Acid Cycle's goal? to take the two pyruvates and put it into the cycle to produce NADH and FADH2 how many steps are in the Citric Acid Cycle?
Spread 2-inches of mulch over the iris bed after trimming, if these are first year plants or if your area experience winter freezing. Irises don't require water or fertilization after you cut them back because the rhizomes go dormant until spring.
If possible, prepare iris beds a few weeks before planting, but don't fret if you have to plant immediately. The traditional recommendation is to add the organic material (2-3 inches) and a generous amount of commercial fertilizer (for example, 8-10 lbs. per 100 sq. feet of 8-8-8) to the bed, and work in.