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.
The iris flower bulbs should be dug from the bed just before the first frosts and then left to dry for a few days in a frost free location. Once the bulbs are dry, any remaining leaves and excess soil can be removed and they are then ready to be taken to their winter storage quarters.