Reblooming Iris Breeding in Zone 6 Kentucky-Cross # 2527

In this post we're dealing with dominant (selfs) and recessive (plicatas) traits and the resulting seedlings. There are many dominant traits and many recessive traits, but this will only deal with selfs and plicatas.  Lots of fun and a few surprises.

'All Revved Up' is one of my plicata rebloomers. It is a child of 'Radiant Bliss' and contains some genetic material for color from the west coast, mainly 'Gigolo.'  It has bloomed in all months from May through October.  'Lunar Whitewash' is a white reblooming iris introduced by Sterling Innerst. It is a good cycle rebloomer. Both are rebloomers and both have good form.  'All Revved Up' has good branching and bud count, but is a little short, while 'Lunar Whitewash' has great form, but really lousy branching.  The goal was a really good meeting of the genes and interesting colors.  

'All Revved Up' with 'Lunar Whitewash' behind. 

Pod Parent 'All Revved Up' (Wilkerson 2007)

Pollen Parent 'Lunar Whitewash' (Innerst 2000)

If you cross two plicatas you will get mostly, and usually all, plicata seedlings. With a decreasing number of plicata genes within the solid or self, you will get a varying number of plicata seedlings, but most will be selfs, bicolors and variegatas. If there are no plicata genes in the self, as appears to be the case with 'Lunar Whitewash,' there will be no plicatas, but there will be haft lines.  

2527-01 (Wilkerson Seedling)  

2527-02 (Wilkerson seedling)

The seedlings have varied with most being the same or near the combination of 2527-02. This is my favorite of the purples since it produces a large number of stalks and blooms.  The white one, 2527-01, is a bit taller with really consistent spring stalks, and probably my favorite of all the results.  Although any color is possible with this combination, the yellow, 2527-06yellow, came as the biggest surprise to me.   Lack of rebloom was the most shocking, but they were in a bad bed.  

2527-06yellow (Wilkerson seedling)  

In earlier years, plicatas provided a large part of the base for rebloom.  It should be no surprise when haft lines show up with plicatas x self crosses.  It's been explained to me that this is not a "plicata effect," as I'd thought, but simply that the lines are not considered a default in the plicatas so they were not bred out of them, therefore, they show up in the children.   

It's not uncommon for my gardening to overreach my ability to keep all of the beds clean of weeds, since I prefer breeding to weed pulling.  These pictures are taken to document flowers for my breeding program, and I never thought they would be viewed by the public.  Please forgive the weeds.

Reblooming Iris Program in Zone 6: "But That's Too Old!"

by Betty Wilkerson

Over the past thirty years, I've grown most of the irises reported to rebloom, and used many of them in breeding. I've produced and grown many iris seedlings that I thought would rebloom, but most have not.  Over the past ten years, as I've tried to encourage others to breed rebloomers, I've often suggested certain strong rebloomers. Ninety percent of the time or more, I'm answered with, "That's to old." or "That's to plain." Of course, they are right, but if we want rebloom, it seems this is the path we must take in zone 6. Most of the rebloomers, introduced in the past thirty years, either don't ever rebloom in my garden, or miss most years. In order to breed rebloomers you may want to use some of the older and more tailored rebloomers.  

My advice would be to grow a handful of strong rebloomers, and experiment with the crosses.  Grow some known rebloomers that are strong in the type of rebloom you want to produce, even fall rebloom if that makes you happy.  Add a few good color genes if you can, but know that the closer you stay to strong rebloom, the more rebloom you are likely to get in your seedlings. Mainly, be happy with your crosses, otherwise there is no point.
  

'Blatant' (Byer's 1990)

'All Revved Up' (Wilkerson 2007) 

Several years ago, John Van Hook visited my garden on a regular basis, and he often urged me to use 'Blatant' as a reblooming parent. Like everyone else, I didn't want to use it because it was "older & plainer." Eventually, I put pollen from 'All Revved Up' (Wilkerson 2007) onto 'Blatant' (Byer's 1990).  I lined them out, fertilized well, and watered on a regular basis.  The cross is approximately 75% plicata so I got plicatas, selfs, saturated variegatas, one white with yellow standard rims and fall rims, and one white glaciata.  A total of 13 rebloomed, including the glaciata.  

'Cool Character' (Wilkerson 2013)

1907-10Re (sibling to 'Cool Character'

1910-10Re (sibling to 'Cool Character.') 

Another rebloomer that I've been reluctant to tell people to use in breeding is 'Violet Returns' by Earl Hall. It's a half sibling to 'Feed Back.' It's both older looking and more tailored, but it produced one of my best reblooming seedlings, 1625-01Re.  'Star Gate' is the pod parent and my 'Violet Returns' X 'Breakers' child is the pollen parent.  Again, it's plainer and shorter than desired.  

2006-01Re is from ('Chinese New Year' x 'Theme Master') X 1625-01Re.  All this one really needs is a touch more form.  It has great height and branching which I attribute to 'Chinese New Year.'  

2006-01Re seedling

2008-01Re Wilkerson seedling

Another child of 1625-01Re is just above, 2008-01Re.  It's not particularly modern, but did rebloom a lot. Yes, it is hard to get modern form when using these more tailored varieties, but this is where the reblooms seems to reside.  Also, rebloom passes most easily when working with plicatas.  I've had really good luck with 'Earl of Essex,' and 'Over and Over.'  'Earl of Essex' is good for working with fall/cycle rebloomers, while I expect 'Over and Over' to work better when working for summer/whenever rebloomers.  More work with 'Over and Over' is in the future.

I've recommended 'Over and Over,' since it's one of the strongest rebloomers I've grown. Most people say they don't want to use it.  Few say it's because it's too plain, but don't offer other reasons.

'Over and Over' (Innerst 2001)

The picture above is not one of the best pictures, but does show some of it's potential faults. It would probably be best to make the cross both ways, just to satisfy your own curiosity as to which way is best.  If you have better pictures of 'Over and Over,' and you are willing to let me use them in my blogs, please send them to me at bridgeintime@aol.com, with permission to use.  

Keep in mind that my reports are from work in my own garden in south central Kentucky.  I'm on a ridge, above a creek. The garden was a former pasture. Your results may be different than mine.   

Some of My Best Rebloom Parents in Zone 6

by Betty Wilkerson

'Earl of Essex' has been used by many people and it has produced many rebloomers, but I'm not sure it has received all the praise it deserves. It is one of my favorite parents due to the fall form, which is round, and its willingness to pass on its rebloom genes.  On the negative side it is a cycle rebloomer, it is short, and it is a plicata.  Those are drawbacks because I work with summer rebloomers, prefer tall seedlings, and dislike the messy hafts that come along when crossing plicatas and selfs.  I've been told that the messy hafts come along with the plicata breeding since they have not been removed from the plicata gene set, and although these genes are not specifically a part of the plicata gene, they ride along with it.  

'Earl of Essex' (Zurbrigg 1979)

Common sense tells me that the shorter plant should be used as the pollen parent with the taller plant being the pod parent, but this is not possible when you don't grow both plants. Sometimes we get pollen from other growers, you see.  A friend donated pollen from 'Hot Streak' (Ghio 1999) and I crossed it to 'Earl of Essex', and 'Radiant Bliss' was the result.  I'm extremely glad I didn't follow common sense!

'Radiant Bliss' (Wilkerson 2004)

Once I moved to Mitchell Weaver Road, and established a short row of 'Radiant Bliss', I looked for a rebloom partner.  'Summer Radiance' stood tall and proud just a few plants over.  Both plants are tall, so it wouldn't matter which was taller, but 'Summer Radiance' rarely sets pods so I used it as pollen parent.

'Summer Radiance' (Wilkerson 1996)

There were several seedlings from the cross that rebloomed, and although some were red, the best one I named 'Summer Honey.'  In 2011 it managed to bloom from spring through fall freeze.  It was a nice, relatively moderate summer, and I did water every ten days or so when there was no rain.  I received a letter with pictures of it reblooming in Oregon in 2014.  It was gorgeous.

'Summer Honey' (Wilkerson 2013) 

Below is a picture of the stalks that were cut down in the fall freeze of 2011. Five stalks growing from one rhizome.

'Summer Honey' stalks (fall)

'Radiant Bliss' was crossed onto 'Innocent Star,' resulting in five rebloomers. 'All Revved Up' is one of these rebloomers.  It passes rebloom on to many of it children.

'All Revved Up' (Wilkerson 2006)

'Rebound' (Wilkerson 96) was used on 'Innocent Star' and produced 'Echo Location' and four other rebloomers.  Below is a picture, showing the netting beside the beard, that I understand indicates it is a plicata.  'All Revved Up' and 'Echo Location' share 75% of their genes.

'Echo Location' (Wilkerson 2007)

'Echo Location' (netting is proof of plicata genes)

'Echo Location' was crossed onto 'Again and Again.'  There were three rebloomers, but 2130-01Re is the only seedling I kept from this cross.  It's not as pretty as I thought it was in maiden bloom.  It was a solid purple self in maiden bloom, but this is what it looks like now.

'Again and Again' (Innerst 1999)

2130-01Re (Wilkerson seedling)

I've crossed 'Over and Over' onto this seedling.  Many have been planted and some may bloom this spring.  Stay tuned for an update on the seedlings.

Why Grow Rebloomers?

by Betty Wilkerson

In the world of irises, there are different guidelines for garden judging and exhibition judging.  What is the difference, you ask? Show bench irises for exhibition only have to look good, and be good, for one day.

'Summer Radiance' (Wilkerson 96)

Garden judging involves how an iris appears in the garden, not for just one day, but for the full iris season. It also assesses plant health, branching, bud count, and sequence of bloom, among other things.  Sequence of bloom not only involves how the blooms open on the stalk, one at a time, two at a time etc., but how the stalks extend from the iris clump.  For instance, an iris I grew years ago had approximately 15 stalks and they all opened the terminal buds on the same day, and then it bloomed all of the first branch primary buds a couple of days later. Yes, it was beautiful, but the clump was finished blooming in just a few days. An iris that puts up one stalk at a time, like 'Summer Radaince,' displays its beauty for a much longer time.

'Vanishing Act' (Wilkerson 2004)

'Echo Location' (Wilkerson 2007)

'Returning Chameleon' (Wilkerson 1995)

When you hear people speak of their remontant irises, they are talking about reblooming irises. Reblooming irises extend the length of bloom per season, per iris. Since there are only two or three fall shows for reblooming irises in the United States of America, most of my focus is on hybridizing good garden qualities.  I'm particularly fond of irises that are dependable for rebloom, as are those shown on this page.

Seedling # 1907-10Re 

My interest in rebloom began over 30 years ago, because I love iris blooms so much that spring bloom was not enough for me.  I'm as thrilled with one bloom as most people are with a whole clump!  When planting a new rebloom bed in my garden, I first research the cultivars that rebloom well in my area, zone 6. Second, I plant them in a good spot.  Third, I make sure I water and fertilize them well.  Nevertheless, there are no guarantees! We are still bargaining with Mother Nature.

As a breeder, I have the added advantage of seeing seedlings, like 1907-10Re, that others may never see. Ask any questions you like.  Enjoy!