Cheerleading Reblooming Iris Hybridizing: Zone 6

by Betty Wilkerson

It's winter.  Time for me to grab the pom poms and start cheering for irises and reblooming irises in particular. I tend to think of myself as the number one cheerleader for raising and breeding rebloomers for the colder zones!  Many of the things that rebloom freely in Australia and the west coast of the US of A, will not rebloom in my zone 6 garden.  I've tested many throughout the years.

Once again I will attempt to encourage and support young people to join the small group of people working toward better rebloomers and better acceptance of rebloomers in the colder zones .  Why not grow irises that provide a second, and sometimes more, round of blooms?

After some 31 years of trial and error and lots of research, here is what I propose might be the best avenue to pursue in a breeding program.  Since most, if not all, of the plant habits come from the pod parent, it is important to start a program with a healthy plant that is disease resistant with good branching and required bud count.  Use strong rebloomers with good form, like 'Lunar Whitewash,' 'Gate of Heaven,' and Wilkerson seedling # 2130-01Re, as the pollen parent.  It is thought this is the best way to pass on form while having a good chance of rebloom.

'Lunar Whitewash' (Innerst 2003)

'Lunar Whitewash' and a seedling (Innerst 2003)

'Gate of Heaven' (2004)

2130-01Re (Wilkerson seedling)

Some of my best parents for rebloom have been seedlings 2130-01Re and 2025-01Re and also 'Star Gate' and 'All Revved Up.'  

2025-01Re (Wilkerson seedling)

'Star Gate' clump (Wilkerson 2004)

'Star Gate' (Wilkerson 2004)

'All Revved Up' clump (Wilkerson 2007)

'All Revved Up'  (Wilkerson 2007)

Some irises with the strongest rebloom characteristics, like 'Over and Over' and 'Immortality' have a more tailored form. The solution to this problem is to use the irises with good form as the pollen parents, as stated above, while using the more tailored ones as the pod parent.  It's also fun and educational to do reverse crosses, or do the cross both ways.   'Over and Over' can give good form, too, if used with a more modern formed rebloomer.  I've a spot that 'Immortality' likes and I'm happy to have blooms each fall.

We would like to see more advancements within the rebloom group, by bringing them closer to the wonders of the more modern oncers.  It's a tough goal, but we need it to be done.  Just make sure your seedlings are an advancement of the rebloomer in your garden.  Keep the parents in your garden and compare yours to the best currently available that perform in your garden. I stress "in your garden" because only you have your growing conditions.

'Over and Over' (Innerst 2001 )

'Immortality' with Dahlias (Zurbrigg 1982 )

'Immortality' (Zurbrigg 1982)

Another reminder.  Rebloomers are going to be judged as garden irises, the same as the Dyke's Medal contenders. It will be rare that an early blooming rebloomer will make a show bench other than in the fall shows.  Typically we only have three fall shows: one in Region 4, one in California, and another in Georgia.  None in region 7.

If you choose not to work with rebloomers, at least make some regular crosses. One or two rows of seedlings across the back of your regular iris planting.  Some of the best irises have come from a small backyard.  You never know when something great may show up. 

In summary, I'd like to urge all people to remember the plant first and then their special interests.  It's really difficult, and frustrating, to bring plant health, branching and bud count back to your lines, so use a quality plant as the pod parent.  Some feel that rebloom counts as more or extra bloom. Personally, I think it's good to get a decent bloom count in both the spring and fall.  Will I hold back an otherwise good introduction due to slightly lower bud count?  No.  

Winter is a good time for research.   Read everything you can find about iris and rebloomers.  We need help!

Late Stalks: Rebloom Breeding in zone 6A

By Betty Wilkerson

Welcome to my garden.  I'm in Kentucky, zone 6.  Once again, it's been a crazy, crazy spring.  We had some really nice days during the last half of winter.  Good days to clean the iris beds and get ready for spring.  This is when it started getting crazy!  I suspect it was Mother Nature in stress mode, but maybe it was just the irises acting weird.  

Just a few days into the bloom season, it looked like a lot of the early things would not bloom!  Then, stalks started to spring up, or so it seemed, on the ones that should have bloomed earlier.  Everything was out of sequence.  However, it did make rebloom crossing easier because more flowers were blooming at the same time.  

At the end of bloom season, the inevitable depression set in.  It's generally over for another year (except for rebloom). Then I noticed extra stalks showing up. There were a couple on some of the new reblooming seedlings, and one on a slightly older seedling from rebloom breeding lines!

There's one on 'Cameo Blush,' and one on 'Over and Over.' 'Silver Dividends' also put up a stalk but with only two blooms.  (No other introduced irises bloomed at this time.)

'Cameo Blush' (Weiler by Friendship 1998)

'Over & Over' (Innerst 2003)  

Two of the seedlings from 'Tara's Choice' X 'Again & Again' put up stalks. The yellow one, 2152-02re, has cycle  rebloomed in the past and is in my older reselect bed with 2 stalks up.  2152-03 is from my previous "baby" bed and was not seen before.  It wasn't great.  No, I don't always plant all of a given cross at the same time. It depends on space and time, and what I want to see, but these were pretty and several rebloomed, so I planted all of them.


One of my disappointments has been 2527, a cross with 'All Revved Up' & X 'Lunar Whitewash.' 'All Revved Up' can bloom all summer and 'Lunar Whitewash' is a good cycle rebloomer, so I'd hoped for some type of rebloom, with good form.  I got form but none have rebloomed, yet. It was a bit surprising when some of these seedlings started putting up late stalks.

2527-05 ('All Revved Up' X 'Lunar Whitewash') 

2527-01 ('All Revved Up' X 'Lunar Whitewash)

2527-05 ('All Revved Up' x 'Lunar Whitewash')

 The latest developing stalks were 2145-01 ('Pure as Gold' X 'Summer Radiance') and 2603-04, a dark one from ('Lunar Whitewash' X Romantic Evening') X 'Over and Over.' A large group of 2145-01 crosses bloomed and were photographed in the spring, while 2603-04 did not bloom in the spring and this is my first time to see it.

2145-01 ('Pure as Gold' X 'Summer Radiance')

2603-04 (('Lunar Whitewash' x 'Romantic Evening') X 'Over and Over')

With three exceptions, all of the surprise reblooming has been on my seedlings which have at least one rebloom parent. My theory, and it's just a theory, is that I should take this as a signal that, if not rebloom, they have some type of "loosy-goosy" genes that allows later bloom.  One thing for sure, they don't put up these late stalks every year. Come to me, my favored children!

You've had another peek into the strange habits of mother nature as she works in and around Bridge In Time Iris Gardens.  For further reading about reblooming irises, visit the Reblooming Iris Society site  or subscribe to "The Recorder" through the website.

Children of 'Over and Over' Part 2- Breeding Reblooming Irises in Zone 6, Kentucky

by Betty Wilkerson

Just a reminder for those that are following this blog about 'Over and Over': many breeders do not consider 'Over and Over' to be a good plant due to its tailored form.  It's my intention to change some opinions, if I can. My approach on these crosses was to use well formed seedlings with 'Over and Over.'  In this crosss, the pod parent is seedling 2016-03 ('Lunar Whitewash' x 'Romantic Evening') and the pollen parent is 'Over and Over.'  

2016-03 (Wilkerson seedling) 

'Over and Over' could and does produce plicatas, but only if there are plicata genes in both parents.  While there are some plicatas in the background of this one, they are far enough back that they are unlikely to produce plicatas.  There are still many seedlings from this cross to bloom, probably this spring, which I expect to be loads of fun.

'Over and Over' (Innerst 2001)

2603-01Re (Wilkerson seedling)

Seedling 2603-01Re, above, contains both 'Lunar Whitewash' and 'Over and Over,' two of Sterling Innerst's last introductions. 'Lunar Whitewash' has terrible branching, so I've been taking a chance with it, but this one was born with nearly perfect branching.  'Romantic Evening' has been added to my lines to improve color depth and variety.  I hope to breed some pinks to these in 2016.

As stated in my August blog, some breeders don't want to use 'Over and Over' due to form and branching. Again, I took a chance.  This picture shows maiden bloom and branching of a seedling.  In the years to come it can change, for better or worse. The bloom was late this year, but it this too will change as years pass.  I've no way to see into the future. This set of parents should be good for rebloom, so stay tuned for more chapters from this mystery.

In summation, my garden is filled with seedlings that are only half rebloom.
On Facebook, I have an album full of the earlier ones that I may still use in this program. In the future, my breeding time will be spent trying to combine these "out crosses" to improve the overall quality of my reblooming seedlings.  Most any strong rebloomer, older or modern, may show up in these seedlings.  I'll report it all.

Several months ago, I found I'd run out of photos.  I've rerun some and used others that didn't make me proud, with the old stalks and everything.  I figured if the perfection of the pictures was more important than the content of the story, that someone would let me know.  Starting with the next post, I hope to have new and better photos.