2018, August 20th at 09:46 #20484
2018, November 6th at 09:10 #21847The Peony SocietyKeymaster
Lest we forget, here are some pictures I’ve taken from the roots now that they have been dug. The first picture shows both the comparison between a plant that has been mowed down after flowering (right) and one that was left to grow (left). The one mowed down still had green foliage and stems of course. Then the next three images, the first one is from the ‘normal’ Canary Brilliants, and the remaining two from the rebloomer. I couldn’t see any difference between the number of eyes (buds), the only real difference is that the ones on the mowed down one are much smaller. That would seem obvious as many of the secondary buds from the Spring growing season were ‘activated’ into growing during Summer and even some new buds on the Spring flowering stems (you can see that if you look good at the images (click them to enlarge)). New buds were developed amongst those new stems, but they didn’t have as much time to develop into large buds as yet. Still, they are there and I’m sure they will grow fine.
I should add that the rebloomers had many stems without flowers. Thus the average 5 flowers per plant in the article means that I did have some 5 flowering stems and perhaps another 7 not flowering, thus say some 12 stems in total. The remark that during a normal season (without those unusually hot days we experienced this year) more flowers would be attainable is based upon the fact that several of the not flowering stems showed a dried up bud and I attribute that to the extremely fast growing. It is well known from research (in Israel) that very high temperatures during growth can result in some aborted flower buds. Of course, some stems without a flower is not too bad as you need stems with foliage on to have new buds developing. Alternatively it would be wise, when cutting during Summer, to leave part of the stem with foliage on, something which is not too difficult as Canary Brilliants has tall stems that at times reach 120 cm (4 feet).
2020, February 11th at 04:16 #25877Marina MasParticipant
What a great info!
This is the second time I am hearing about an intersectional peony reblooming. The other was a Bartzella, also after leaves were removed. Curious why it would sometimes rebloom and sometimes ignore being mowed over.
2020, February 11th at 13:19 #25878
I didn’t know Bartzella was able to rebloom as well. At the time of the hail-storm I also had Bartzella, but it did not regrow. But as a cut flower Bartzella isn’t very interesting anyway, it doesn’t hold well in a vase, whereas Canary Brilliants does (though it opens fast). Some hybridizers cut off the first stems of a double-flowering variety to have the secondary buds start growing smaller stems with less double flowers in the hope of having more pollen or usable carpels. But that is usually done early in the season, say somewhere in March. With Canary Brilliants, if you do it shortly after it has flowered beginning June, it works, but if you wait a few weeks it’s not much worthwhile, it will regrow but you’ll hardly have any flowers. I do suppose there will be other intersectionals capable of regrowth this way, but these last years I haven’t bought any new ones, thus I have only tried the older ones (mostly from Roger Anderson).
This is what they looked like back then, June 7th, 2014
I didn’t take photos of them at reblooming time then, but here they are in a vase that Summer, somewhere at the end of July, beginning of August:
2021, October 10th at 14:32 #28663LindaParticipant
Have you done the reblooming experiments from 2018 to 2021?
Are there any new progress?
Looking forward to your kind share.
2021, October 10th at 21:17 #28664
Yes I have. It has always worked, although some additional remarks can be made. One year I’ve cut them down in the same month three times, to spread the flowering time in Summer. Each 10 days later meant far fewer flowers. Here in Belgium peonies usually flower in May, with most of the lactifloras around 20-30 May. Canary Brilliants is in the beginning of that period, around May 20 mostly. Cutting down June 1st works fine. June 10th and June 20th are progressively worse. This year was a remarkably cold and wet Spring and they only started flowering in June instead of halfway May. I thus waited until most of them had flowered before cutting down, hence this was around June 15th, when the last flowers were still on the plants. It seems the flowering time is no good predictor of the time to mow them down, I had very few flowers. It’s clear they have to be cut down around June 1st or possibly even earlier to have the blooming at the end of July, beginning of August. That means in a ‘late’ year, they’ll have to be cut down before their first flowering. This does limit the advantages of it somewhat you’ll surely agree. But such late years are a rare exception here, and becoming even rarer due to climate warming.
I’ve also tried to add some GA3 to the plants after cutting them down as this is often done to remove cold requirements. It didn’t help at all. I guess the secondary buds simply start growing because the main stems have been cut down. It is well-known from reports by some hybridizers that you can cut down the main stems from double (lactiflora) varieties early in the season to induce the secondary buds to start growing (which may be less double and hence more usable in a breeding program). That has to be done when they have only sprouted a few weeks at most. I think Canary Brilliants simply reacts longer to this phenomenon compared to other varieties and that it has nothing to do with cold requirements of the secondary buds.
I’ve not propagated my field of Canary Brilliants (some 750 plants) anymore. The flowers sell well in July/August, but the fact remains that that time of the year is when most people are on holiday and most florists close shop, thus demand is quite low anyway. And next to that July/August is, on average, warmer than May, thus they open rather fast. Canary Brilliants as a cut flower already opens too fast in my opinion, but in such warmer weather it’s nearly impossible to sell them easily. You cut them at the right stage in the morning. Put them in a vase and by evening they’re fully open, that’s too fast. Okay for some florists that have a wedding planned and so on, but for general customers that go to a flower shop and decide there what they’re going to buy, they are simply too far open. Given also that you have the remove all the foliage, which is quite a lot of work, I think it can only be a small ‘niche’-product. I’ve tried some other varieties as well this year, with GA3 added, but all I got was some leaflets and no flowers.
So, that’s the story up to now. I don’t think much will be added in the near future. Perhaps the tree peony High Noon has some genetics that may be used to proceed in this direction (or Oukan, one of its’ (more fertile?) seedlings), but I myself am not working on this.
2021, October 11th at 14:30 #28665LindaParticipant
Thanks for your soon reply.
You do try your best to find out many important details,such as “mow down on June 1st work fine”,GA3 does not help,etc.
Itoh peonies do bloom quickly and have quite short vase life. Still there are some methods to extend the life of the Itoh peony.
In China, we also find some varieties can rebloom at early automn.
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