You will only want to cut it back once it is fully dead. This will be shriveled and brown by the time you will do so.
Sometimes, this can be normal. If this is happening while there is little foliage on the plant, then there could be an issue.
Fungal issues can be common where there is lots of rain, or when they get overwatered for an extended period of time.
A fungicide may be necessary. This article will help: https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
This article will help you to care for Iris plants: https://www.gardeningknowhow.com/ornamental/bulbs/iris/iris-plant-care.htm
My Irises are not getting enough light to bloom this year. Now the Kudzu vine is going to choke them out. Please help. I don't have a phone to take a picture, sorry.
You are in luck as this is the right time to transplant iris. They are dormant in late summer, usually July and August, so that is a good time to move them. Here is an article about transplanting iris and one about controlling kudzu. Good luck!
https://www.gardeningknowhow.com/ornamental/bulbs/iris/divide-bearded-irises.htm
https://www.gardeningknowhow.com/plant-problems/weeds/kudzu-information-and-removal.htm
best way to pack for air transport please, Is it legal?
p.s. Cut the leaves down to 4 inches for transport.
The best way to transport iris is to wash off the soil then wrap in slightly dampened paper towel. Seal in plastic bag. (plant as soon as possible) TSA allows plants as long as they comply with carry-on baggage rules. USDA and WA Dept of Agriculture have quarantine rules but these apply to bulk nursery stock.
Tall bearded iris was planted 11/17. When it began to bloom in July 2018, the flower never grew a stem.
Most likely it was a problem with the rhizome. There may have been a stunted stem, so short you couldn't see it.
I think I would dispose of the rhizome, or you could leave it and see if it grows normally next spring.
https://www.gardeningknowhow.com/ornamental/bulbs/iris/iris-plant-care.htm
Bulb companies send out fall bulbs in Sept.and advise you to plant as soon as you get them. Sept & Oct are often in the 90's,occasionally even 100 degrees. though it does cool down below 60 degrees at night. Should I wait for cooler weather before I plant irises?
Iris should be planted at least 6 weeks before the first frost to perform well in spring. You could probably plant iris in September or October, even if it's still warm. In cooler zones, iris are planted in late summer.
https://www.gardeningknowhow.com/ornamental/bulbs/iris/iris-plant-care.htm
I have dug up my iris bulbs and daylilies to move; I noticed they all have these little white bugs crawling on them and some have holes in them and are rotten. These bulbs were my mom's who has passed away, and I do not want to dispose of the bulbs. While I have the bulbs dug up, is there anything I can do to get rid of the bugs now before I plant them? thank you
You can probably hose off the bugs or use an insecticidal soap. Since these bulbs have sentimental value, try cutting away the soft rot on the rhizomes to healthy tissue if any remains.
These are over 2 yrs old, and I have only gotten 1 or 2 flowers. What do I need to do to make them bloom more? How do I go about trimming them, and when is the best time?
They don't, usually, need fertilization, and will never need trimming of foliage. You can trim the bloom and bloom stalk, but trimming leaves will not be advised unless you are dividing them.
They can have a lack of blooms due to over fertile soils, too much, or too little water, and too little, or too much sun.
This article will help you to care for the flower: https://www.gardeningknowhow.com/ornamental/flowers/dietes-plants/growing-evergreen-iris-plants.htm