I have immortality. I am in zone 6a, planted in full sun in ground. I do mulch them 3 seasons--from late September to late April to minimize squirrel attacks. I bought it in a pot from Lowes at $10 in the fall of 2020 when it was on sale. They bloomed in 2021 May-June, rebloomed in September (3 stems) and November (but didn't get chance to bloomed as a frost killed them).

This year it bloomed in May-June, rebloomed in late August to September (3 stems bloomed) and will bloom again in October (4 stems already in buds).

I do give them bone meal once or twice a year. And I cut the spent rhizomes (the one with bloomed stems) in late June. I have gave away 6 rhizomes, discarded two rhizomes that were infected by borers in late June, divided and immediately replanted them in new locations. Even the ones I replanted in the end of June have set stems now.

Immortality is the first ever iris I grew. Since it is so rigorous, and I have limited space, I am not afraid of divide them every year, or every 6 month. It seemed to work for me. But my other irises do not multiple that fast, I take it easy with them.

Hi, I have grown and had decent rebloom on Immortality, Harvest of Memories, Peggy Sue, Rosalie Figge, and Daughter of Stars. I don't baby them but I do add fertilizer in the Spring along with all the others. I am glad to see the hybridizers working more with Rebloomers.
I am in southcentral KY zone 6a.

I have had a few irises rebloom even without me fertilizing/weeding properly.

~Faithful and True (Pure white TB)
~Sugar Blues (TB)
~Precious Little Pink (IB)
~Kind Candace (TB)
~Spirited (SDB)

An addendum to my earlier post, I did give extra watering to the rebloomers this year and every now and then, put a couple "droppings" on them and that has seemed to do the trick.

I have gotten seven rebloom stalks this year.

Two on Sugar Blues*.
One on Precious Little Pink.
One on Faithful and True.
Three on two NOIDs* **

*Yet to bloom
**NOID

Fun fact: My pure white TB Faithful and True has been my best rebloomers and has given me four stalks in two years. It has been better than Immortality performed in my garden, which is a highly renowned pure white.

By this logic, Faithful and True is the better of the two, at least by my personal experience. Faithful and True is underrated!

Thanks for the update Monty. I have never heard of that one or your others.

My order from C & T Iris Patch this year included a few rhizomes of 'Violet Music' (Clarence Mahan, 1990/1991). I planted them as soon as they arrived, around September 17th of this year.

Here is 'Violet Music' one month after planting. Would this qualify as a "rebloomer"? (Photos taken today, October 16, 2022.)

By the way, Violet Music has a wonderful fragrance! You have to get your nose down into the flower to enjoy the aroma but it is luscious. (Ranks 3 on my 1 to 5 fragrance scale.)

Randy

Randy, I'd love to hear more about your fragrance scale. Based on intensity? Are there separate "categories" such as "Sweet" or "Spicy" with each category having its own ranking. Or does a "sweet" fragrance get a better score than a spicy one? What are your top scoring iris?

Hi Laurie!

I came up with my Iris Fragrance Rating system as a way to categorize iris cultivars when I launch my new website this January. Two and a half years ago I decided to start a new online retail iris business, specializing in highly fragrant iris cultivars.

I've been researching, identifying, attempting to locate and acquire those cultivars that are rated as having "Pronounced" fragrance, whether sweet, spicy or just pronounced. I've also been searching through old iris catalogs for original descriptions. Many say things like "Deliciously fragrant!" or "A single flower fills a room with fragrance." Those are what I'm seeking.

I've picked up just a few with pronounced musky but I'm a bit wary of them as I've heard a few people describe them as "offensive". We'll see.

Mostly, I rank fragrance on intensity. I may have to come up with an additional descriptor for particularly pleasing fragrances. Maybe a 5 with an *.

At any rate, here's how it works;

1 = Little or no appreciable fragrance. I will cull these.

2 = Some fragrance but not worth the effort. I will cull these.

3 = You have to bury your nose in the flower to appreciate the fragrance but it's worth it. These are keepers.

4 = The fragrance is noticeable when standing next to the clump.
Definite keepers.

5 = The fragrance finds you! These are valued treasures!

In fact, a few months ago I had the privilege of helping someone identify and locate a 'lost' fragrant iris cultivar. She remembered the iris from "before the 1980s" but didn't know the name and couldn't find anything like it.

I finally came up with 'Song of Gold' (Edward Essig, 1937). She was certain that was it but I couldn't find any vendor listing it. However, the photo credit on the garden.org database listed Melody Masi as the photographer. Fortunately, she has a profile here and I was able to reach her. Melody still grows Song of Gold and was willing to share!

Melody claims the fragrance of Song of Gold would drift through her bedroom window as a child and fill the room with fragrance. I'm eagerly awaiting the first bloom! Sounds like it will be a 5.

So, yeah. It's based pretty much on intensity of fragrance.

Anyway, I'll have my work cut out for me next bloom season as I have a few hundred cultivars to catalog... so far...

Randy

I think it's wonderful that someone is specializing in fragrant irises.

DaisyDo said: I think it's wonderful that someone is specializing in fragrant irises.

It's one of the fragrances of flowers that don't give me a migraine. Some flowers I cannot bring into the house, and others I cannot have them in my garden. I never met an iris fragrance that I didn't like, or would have an adverse reaction. Keep up the good work!

Daisy, I became so frustrated when I would order 'fragrant iris collections', then find most of them had very little fragrance, that I decided to start a business specializing in just that. I was amazed that no one had actually done that yet. It may not work but I'm giving it a shot.

Evelyn, so glad you can enjoy the fragrance of irises. My mother was extra sensitive to fragrances. Could never give her scented candles or soaps or even perfumes as gifts. Fortunately, I didn't inherit that gene!

Randy ~ It is fascinating to hear your process. This performance of fragrance system is exactly what I would do if I were akin to ranking iris blooms based on smell potency.

Fragrance can be the most delightful or dastardly thing.

Also, unless Violet Music is majorly confused, this is a rebloom stalk.

Thank you Monty!

Violet Music is listed as a rebloomer but I was surprised to see such a nice bloom stalk just thirty days after transplanting. I've always received such nice quality rhizomes from C&T!

I'm going to cut the bloom stalk today and bring it in. There's a second bud just below the one in bloom now. Freezing temps forecast for tonight plus I want to see how the fragrance performs indoors.

This is also useful info for me if your Violet Music is reblooming; I seek rebloomers always to extend my bloom season so if Violet Music reblooms for you in 5a, chances are, I have no worries about it reblooming here in 7a.

Rebloomers NOT reblooming for me in 7a is one of my hesitancies when purchasing rebloomers. I always look for anything that is noted to rebloom in 7a/7b or lower (especially lower!).

Monty,

Very cool! I'll be sure to post my full list of reblooming cultivars next year. I'll be keeping very careful records on bloom time, fragrance and rebloom so should have good details for you.

Randy

I'm putting Song of Gold on my want list.

Also says it has purple based foliage.
Looking forward to your lists.

Randy ~ I have a fair few that I can list that reliably rebloomed for me in 7a.

Some of which may also rebloom for you in 5a, but you never know. Rebloomers are finicky.

Speaking of, all five rebloomer stalks are covered with socks covering the top bud and the second branch. The first one will open its petals tomorrow!

I live in Florida but I plant irises at my daughter's house in Utah. We chose mostly iris that were labeled as rebloomers, but have been pretty disappointed until just the last few years. The warm season is getting longer, and rains more dependable in that high desert environment, I guess.

'Rosalie Figge' is now our faithful rebloomer, with beautiful, lush purple flowers. This year 'Orange Harvest' looks like it may be getting ready to rebloom, too.

Sugar Blues rebloomed for me. Another stalk about to open.

Harvest of Memories iris blooming today. I planted one rhizomes last Nov and it bloomed in May and again in November. I can't complain.