2014 Peony Experiments - Herbaceous Divisions

After dividing a few of my peonies to give away Free Peonies at Gardenweb Carolina Plant Swap, I had a few casualties - pieces of herbaceous peony crown with buds attached but not much root. With little to no root on these pieces, I didn't want to give them away at the plant swap, possibly disappointing people with very little peony experience. These pieces are mostly just a piece of the crown with some growth buds. It is possible these may not grow at all, and if they do grow, it will likely take them a while to catch up to a standard division that contains the peony's storage roots. So I decided to plant them in one of my test beds to see if they would grow. I will be adding this experiment to the Experiments page, and will add updates about these peony pieces in the spring.

Herbaceous Peony 'Scarlet O'Hara' Divisions with Very Little Root


Unknown White Double Herbaceous Peony Division with Very Little Root


Unknown White & Yellow Anemone Herbaceous Peony Division
with Very Little Root

As you can see I tried to plant these peony pieces a bit deeper than I normally Plant an Herbaceous Peony. I wanted to give these little pieces a chance to grow and stay as moist as possible since I probably won't be watering them much. I'm curious to see what they can do on their own. If any of the peony divisions are successful in the spring, these will probably be contributions to share at future plant swaps!

Plant Herbaceous Peony 'Scarlet O'Hara' Divisions
with Very Little Root


Planted Unknown White Double Herbaceous Peony Division
with Very Little Root


Planted Unknown White & Yellow Anemone Herbaceous Peony Division
with Very Little Root

2013 Peony Experiments - Intersectional Divisions Grow

I thought you might like an update on my intersectional peony divisions from my 2012 Peony Experiments - Intersectional Divisions. I was surprised to find last week, that even the division with no roots and old wood has started to grow!!! I am just amazed by this plant's earnestness and vitality. All of the divisions have really taken off. Peony 'Bartzella' has proven to be just a stellar plant in my garden. The tiny red growth from early spring in my 2013 Peony Experiments - Intersectional Divisions has turned into flourishing plants. One of these small divisions even has a flower bud on it! I have since given that one to my grandma, but the rest of them are doing great and still growing! I am also planning to donate another one of these Peony 'Bartzella' divisions to the 2013 American Peony Society Fundraiser Auction. So if you'd like a chance to bid on a stellar peony for Southern gardens, please join us at the 2013 American Peony Society Convention at Longwood Gardens in Kennett Square, Pennsylvania!

Peony 'Bartzella' Divisions with Small Roots Growing 4/12/2013
Peony 'Bartzella' Divisions with Small Roots Growing 5/27/2013
Peony 'Bartzella' Division with Tiny Roots Growing 4/12/2013
Peony 'Bartzella' Division with Tiny Roots Growing 5/27/2013 Gave the Peony 'Bartzella' Plant on the Right to My Grandma
Peony 'Bartzella' Division with No Roots Growing (New Wood) 4/12/2013	Peony 'Bartzella' Division with No Roots Not Growing (Old Wood) 4/12/2013
Peony 'Bartzella' Division with No Roots Growing (New Wood) 5/27/2013	Peony 'Bartzella' Division with No Roots Growing! (Old Wood) 5/27/2013
Close Up of Peony 'Bartzella' Division with No Roots Growing! (Old Wood) 5/27/2013

2013 Peony Experiments - Intersectional Divisions

I am happy to report that 5 of the 6 Peony 'Bartzella' root divisions that I planted last fall, in the 2012 Peony Experiments - Intersectional Divisions, have come up! Even one of the divisions with no roots sprouted. I didn't apply any rooting hormone or fertilizer, and I gave them very little supplemental water. Mother Nature did her thing! Some of the peony divisions even have multiple stems sprouting from the base! The only one that didn't sprout at all was the division that had no roots and the stem was old wood. The other division that had no roots came up, and that one had new wood. So it seems that the intersectional peony divisions can generate roots when there aren't any, if the division is a new stem. So get out there and start dividing your peonies! Fill up your yard, and then fill up your friends and neighbors yards too! :-) Share the love!

Peony 'Bartzella' Division with Small Roots Sprouting
Peony 'Bartzella' Division with Tiny Roots Sprouting
Peony 'Bartzella' Division with No Roots Sprouting (New Wood)	Peony 'Bartzella' Division with No Roots Not Sprouting (Old Wood)

2013 Peony Experiments - Peony Seeds in Bags

After ordering some Peony Seeds from Hirt's Gardens, I decided to grow the seeds in plastic bags based on some interesting instructions the seeds came with. I've never grown any peony seeds in bags before. So I decided to give it a try to see what would happen, whether they would sprout, and what the germination rates would be following this method. It has been three weeks now, and as you can see, there are no peony seeds sprouting in any of my plastic bags. In fact the only thing sprouting in my plastic bags is mold. As you can see in the second picture below, the two P. ludlowii seeds are both covered in mold. The rest of the bags appear to be mold free, but they are also root free as well. I am still going to plant these seeds in the ground, and hopefully some of them will still sprout anyway. For me this method did not work. I'd be curious to know if anyone else has been successful with this method, and if they have any tips. Sometime I think keeping things simple is the best way, let Mother Nature work her magic...
Peony Seeds in Bags with Moist Vermiculite


Mold Growing on Peony Seeds in Bag

2012 Peony Experiments - Intersectional Divisions

I divided a huge Peony 'Bartzella' this week with 24 stems. I ended up with 10 divisions. Four of the divisions have large root systems, and I know they will grow fine. However 6 of them had little to no root left on them. Since Peony 'Bartzella' DNA seems to be quite valuable these days, and I am not currently in the business of cloning :), I thought I'd plant them out to see if they'd survive, grow, and thrive. Some of them have only a stem and a bud on them. So those I planted a little deeper hoping for an adventitious root. I know some peonies are known to create adventitious buds. So I'll be curious to see if these are able to develop adventitious roots. :) I planted these out in my new peony seedling test bed which I guess is now just my peony test bed. I also had a little helper that sprinkled a bit of water on them. :)

Peony 'Bartzella' Division with Small Roots	Peony 'Bartzella' Division with Small Roots Planted
Peony 'Bartzella' Division with Tiny Roots	Peony 'Bartzella' Division with Tiny Roots Planted
Peony 'Bartzella' Division with No Roots	Peony 'Bartzella' Division with No Roots Planted

Peony Helper

2012 AmScope Microscope for Peony Research

I am really excited! I just placed an order on Amazon for an AmScope 40X-640X Glass Optics Student Compound Microscope + USB Digital Camera. I was able to get it for $59 after points from my Amazon Visa and some Amazon gift cards I had. Now I can take really close up pictures of peony components! I can't wait to use it. I want to look at foliage, blooms, stems, roots, and even diseases! This is going to be so cool. It even has a built in camera, so I'll be able to post some pics to my blog. If there's something you'd curious to know that you'd like me research with it, please feel free to send me a question! This will be a valuable tool for future Experiments.

Microscope for Peony Research>

2012 Peony Questions and Topics

I received a question on growing peonies as a comment on one of my posts. I would like this site to be as helpful to others as possible. So to that end, I would like to invite you to send me your peony questions, concerns, or topics you'd like me to cover. It doesn't matter how crazy or silly it might be, as long as it pertains to peonies, send it in! I will also creating a permanent link for Questions on the front page. So if you've got some burning question, that you'd love to have answered, please send it in. I'd be happy to answer any questions I know the answer to, try to research it for you if I don't have the data, and possibly even do some experiments to get an answer! You can contact me by email Send Your FAQ to Southern Peony. Also if you'd like to subscribe to this blog, you can do so here Subscribe to Southern Peony by Email.

2012 Peony Experiments - Sun vs. Shade

I have one Peony 'Bartzella' that is growing in full sun, and another that is growing in partial shade. The difference between them is huge. The one in full sun has loads of blooms and the foliage is fuller and lower to the ground. The one in shade had only a couple of blooms, and the foliage is much thinner, taller, and upright. Both peonies were planted in 2007. So I've been growing both of them for 5 years. The number of stems and blooms on the one in full sun really outnumbers the one in shade. The plant growing in partial shade had 6 stems and 2 blooms this year. The plant growing in full sun had 20 stems and 19 blooms this year. So it is quite obvious that intersectional peonies can grow and bloom in shade, but their vigor and number of blooms is greatly reduced. So if you have a peony that's not doing very well that is in partial shade, find a nice sunny spot in your garden for your peony and move it there! :-)

Peony 'Bartzella' Growing in Sun


Peony 'Bartzella' Growing in Partial Shade

2012 Peony Experiments - Cutting Back Dead Flowers

I usually don't get around to cutting back dead flowers on my peonies. The past couple of years I have just left them to fend for themselves until the entire stem dies back. That way I would leave the flower head intact so that seeds could develop. However I have noticed quite a bit of fungal disease, and I wondered if it had any correlation to leaving the spent bloom on the plant. The flower type really seems to make a difference in this. The single and semi-double type flowers that shed their petals easily do not seem to have as much fungal disease as the more full double flowers that seem to hang onto their petals. Also I have noticed that dead petals that have fallen onto foliage below actual contribute to additional fungal growth that otherwise may not have developed. It seems the dying petals create just the right environment (more moist and warm) that the fungus needs to develop.

Dried Peony Petals on Foliage


Fungus on Peony Foliage
Over time I have been able to better recognize which seeds pods actually have developing seeds in them. So this year, I have started cleaning up my full double flowered peonies to remove the spent blooms. I also have 2 peony bushes of a white double peony that are the same variety. I decided to cut back the spent blooms on one of them, but not the other. I will check the amount of fungal disease later in the season. I also plan to cut down the dead foliage on the same one I cut back the flowers on and leave the dead foliage intact on the one I didn't cut back the flowers on. So we shall see how much difference it makes in the amount of fungus on the plants this fall and next spring.

Peony Spent Blooms Not Cut Back


Peony Spent Blooms Cut Back

2011 Peony Experiments - Intersectional Blooms

I think I read somewhere that intersectional peonies would not bloom on old wood, and that the old stems must be cut down every year in order to get blooms. Somehow this did not ring true to me, and I wanted to find out for myself. So for the last 2 years I have left some of the old wood on my intersectional peony 'Bartzella'. The first year I didn't get any blooms on the old wood, but this year I did. Considering that intersectional peonies are merely a cross between herbaceous and tree peonies, and tree peonies bloom on woody stems, it makes sense that intersectional peonies could bloom on their woody stems as well. Perhaps the climate the intersectional peony is growing in will make a difference. I could see how the woody stems of the intersectional peony may not be as cold hardy as the woody stems of the traditional tree peonies. However for my zone 7 southern climate, intersectional peonies can definitely bloom on their woody stems from the previous year.
Peony 'Bartzella'

Peony 'Bartzella'