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

2014 Free Peonies at Gardenweb Carolina Plant Swap

Here it is fall already. The semi annual Gardenweb plant swap took place this past weekend, and I decided to bring 8 peony roots to trade at the plant swap. You should have seen the people arguing over those peonies! I guess I didn't bring enough of them! There were quite a few people there. I'd say at least 50. So not everyone got one of my peonies, and there were several people that weren't too happy about that! I guess that's a good sign. It seems there is quite a bit of interest in peonies here. Hopefully I'll convert a few people from just garden people with a casual interest into peony lovers! It's not too hard to get addicted to them. Once you get your hands on one peony, and it starts to bloom for you, you just can't wait to get another one! :)
Free Peonies for the Gardenweb Plant Swap

2014 Tree Peony with Herbaceous Nurse Root Growth

I was surprised and curious to discover the first herbaceous nurse root sprouting from one of the tree peonies I planted last fall. It was on Tree Peony 'High Noon', which I purchased from a very reputable source. I suppose the quality of the tree peony grower won't prohibit this from happening. As you can see the photo on the left is what the tree peony looked like with the herbaceous nurse root sprout almost taking over the plant. After I removed the herbaceous sprout, you can better see what the actual tree peony foliage looks like. Both the herbaceous and tree peony foliage is very distinct. So you can easily tell when something is sprouting that shouldn't be and which stems you should remove. I just plucked the stem from its base, kind of snapping it off at the bottom. It was very easy to remove. Now that the herbaceous sprout has been removed, the tree peony stem above will have more energy available to it for its own growth. I will have to keep a close eye on this tree peony to make sure that no additional sprouts develop from the herbaceous nurse root that was grafted to this tree peony.

2014 Questions - Transplanting Peonies in the Spring

I received this question from Bahiyyah in zone 7:
"Hello, I love your blog, I have a question for you. I know transplanting in the spring is not best, but I had no choice. Now I have over 100 peonies to replant. Some are very young with only 3-5 eyes. I know to plant those whole. But what about the ones that have large root masses, but only 3 eyes showing. Is it problematic to replant those whole? I remember reading that once dug up peonies prefer to be split to grow properly. Should I trim some root off those. For a visual imagine 8 big juice carrot sized roots, with only three tiny eyes. Also, do you have any tips for soil amending when planting? I have access to leaf mulch, wood chips, well aged horse manure, worm compost and regular compost. Thank you for any and all advice you can offer"

Thank you for such a nice compliment! You are correct in stating that spring is not the ideal season to transplant peonies. Fall is the best season for moving and dividing peonies. However spring is much better than summer, especially if the peonies have not yet sprouted (which is what it sounds like you are describing when you mention that your peonies have eyes - instead of foliage growth). You may notice some reduction in blooms this year, but provided these peonies are replanted in a good location with plenty of sun and nice soil, they should recover nicely. If any of your peonies had enough stems last year to divide (at least 7-8 stems), then you can go ahead and divide those peonies. However if your peonies didn't have very many stems last year and only have 3 eyes with large roots, I would not divide those peonies. Also it isn't necessary to remove any of the storage roots before planting unless you feel need to remove them for some other reason (ex. unwieldy for planting, unmanageable for transporting, diseased, etc.)

As far as soil amendments, I would recommend the leaf mulch and compost and mixing it well into the soil. The horse manure could also be used, but it definitely shouldn't be applied directly to the roots or crown of the plant. The wood chips could be used as a mulch/top dressing only to prevent weed growth. However it is not recommended to mix these into the planting hole, as they can inhibit the peony root's access to nitrogen.

2013 Planting Chinese Tree Peonies

Chinese Tree Peonies Soaking in Water
After soaking the Chinese Tree Peonies from Ali Express, some of them started to look promising. As you can see below on the tree peonies with long stems and short roots, after soaking them in water I started to notice some white or light colored nodules on the sides of the tree peony stems. These may turn into growth nodules, from which roots or stems may be generated in the spring. Also I figured out which tree peonies these are supposed to be. The one tree peony with a short stem and long roots is supposed to be the blue tree peony I ordered. The other 5 tree peonies with long stems and short roots were 2 yellow/orange tree peonies and the other 3 were the ones that were supposed to be the Ali Express Chinese Tree Peonies $5.52 for 3!. I had ordered 3 sets of 3 of these peonies. So I should have gotten 9 of those tree peonies, but they only sent 3. So I opened a dispute with Ali Express for that particular order.
Blue Chinese Tree Peony with Short Stem and Long Root


Chinese Tree Peony with Long Stem and Short Root


Chinese Tree Peony with Long Stem and Short Root

After soaking the Chinese Tree Peonies in a bucket of water for a couple of days, I finally got them all planted Wednesday morning. I planted the tree peony with the short stem and the long root pretty much even with the soil. The other tree peonies with the long stems and shorter roots, I planted about 4-5 inches below the soil, which left about 2 inches of the stem above ground. The majority of the tree peony stems were planted below ground, in hopes they would generate their own roots, just in case the tree peony stems are grafted to herbaceous peony root stock. Now I am feeling a little more hopeful that these Chinese tree peonies will grow in the spring! I'll let you know... :-)
Planted Chinese Tree Peonies from Ali Express

2013 Sharing Peony Roots at the Fall Plant Swap

I went to the fall Carolina Plant Swap this weekend. I brought 3 peony divisions with me this year to trade. These were nice, large divisions of a medium pink colored herbaceous peony with nice foliage. Hopefully they will each produce flowers next year in their new homes! I made these divisions from an herbaceous peony that was previously growing in my peony moon garden (which I recently cleared out to make room for my New Tree Peony Moon Garden). Since I love peonies so much, I can't help but want to try to encourage all gardeners to grow peonies. Once they find out how nice they are (and easy to grow), I'm sure they'll be hooked too! Let's hope I can donate even more to next year's plant swap! :-)

2013 Peony 'Grace Root' Adventitious Bud Stem Flower

Peony 'Grace Root'
Peony 'Grace Root' definitely is a beautiful plant. This peony was hybridized by Saunders and registered in 1940. According to the registration for this plant, it is a lobata hybrid: "Single - Pink - Hybrid. Clear light salmon pink, cut shaped single. Albiflora x lobata. Lists in Bulletins 91 and 129." Peony 'Grace Root' is beautiful not only for her lovely neon coral-pink blossoms that stand out in the early peony bloom season, but also because of her rare ability to generate new plants from her roots.

Peony 'Grace Root' Plant
with Adventitious Bud/Stem Growing From Root
This curiosity is called adventitious bud development. These adventitious buds develop in an unusual place on the plant, the roots, instead of the usual location for bud development, the crown. This small plantlet can be separated from the mother plant by root division. Normal peony division would require a crown and root division to obtain a viable plant. However this new peony plantlet will develop its own crown when separated and planted out on its own.
Peony 'Grace Root' Adventitious Bud/Stem Growing From Root
This particular adventitious peony bud / plantlet is actually in its second year, and it also developed a bloom this year. It assumably benefited from still being attached to the mother plant, which allowed it to use energy from the mother's plants storage roots to develop a flower bud so quickly. When grown from seed, peonies can take 3-5 years to flower or more! I plan to separate out this adventitious bud / plantlet this fall. I'll keep you posted on how it does. I'm curious to see how well it grows, and how long it takes to make babies (adventitious buds) of its own!
Peony 'Grace Root' Flower on Adventitious Bud/Stem

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 How to Plant a Tree Peony

Tree Peony Stem and Roots	Tree Peony Stem Root Junction

Tree Peonies should be planted similar to Herbaceous Peonies, except much more care should be taken to make sure the stem and roots are facing the proper directions. This is important for herbaceous peonies as well, but more so with tree peonies.
Dig Hole for Tree Peony
The first step and perhaps the most important step in planting a peony is preparing the soil. I usually dig at least a 3 foot round hole for each root, spading the soil with my shovel to make sure the dirt is nice and loose. After the hole is dug and the soil has been loosened, I add some organic fertilizer and lime (dolomitic limestone) to the soil in the hole and mix it in. The fertilizer is used to add nutrients to the soil and the lime is used to adjust the PH of the soil. In my area, most soils are acidic, and peonies prefer a more neutral to very slightly acidic soil, around a PH of 6.0 to 7.0.

Put Tree Peony Root in Planting Hole
Next take a look at the tree peony's roots and make a small hole in the middle of your 3 foot round hole that will accommodate the size of the peony root. Tree peonies keep above ground woody stems, whereas herbaceous peonies do not. The tree peony will have a definite delineation between the roots and the woody stem. The woody stem may have pink buds on it, or it could have died back, in which case the new shoots and foliage would emerge near the bottom of the stems/top of the roots. So make sure to put the roots into the soil and put the woody stem(s) pointing up towards the sky. In my southern climate the point where the roots meets the stem can be planted even with the soil, so that the roots are below the soil and the stems/buds are above the soil. However if you have a grafted tree peony, it is advisable to plant the stem/root junction a few inches under the soil to, hopefully, allow the tree peony stem to form roots of its own and prevent the herbaceous peony root from creating its own foliage shoots.

Cover Tree Peony Roots with Soil
Once the tree peony root has been covered with soil, I cover the planting hole with a 1-2 inch layer of mulch. You don't want to put too much mulch on peonies in this climate. Otherwise the roots may not get enough chilling hours needed for blooming. They do however need enough mulch to retain moisture (It does get really hot here!) and prevent weed growth. After the peony has been mulched, I water the newly planted peony plant. You can water your root before or after you mulch it. I just like to water mine afterwards because it seems like the soils stays in place a little better with the mulch already on top.

Mulch Tree Peony

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 Questions - Purchasing Peony Plants Versus Roots

I received this question from Karen in Zone 8:
"I currently have no peonies growing in my yard, zone 8, Montgomery AL. My first question is should I even attempt to do this with our long, very hot humid summers and mild winters. I've seen several container grown peony plants for sale in nurseries here in the spring. Is this advisable to purchase a plant rather than bulbs?"

I would say that if you find a plant for sale in your local nursery, most likely the plant should grow in your zone. Most nurseries want repeat customers, and if they sell plants that don't grow well in your zone and just die, they're not likely to get to many repeat customers that way. Peonies will definitely grow in zone 8. The question of whether to purchase a peony plant or a bulb (which is really a root) depends on how much time and money you have. If you can wait a little and want to buy the peony at a lesser cost, buy the root, since the root will likely be cheaper. However it may take one or more years to see blooms depending on the size and condition of the peony roots. Conversely if you don't mind spending a little more and would rather see results sooner, buy the container plant. Usually you can find peony container plants in bud or in bloom, so you know you will have blooms this year and for many years to come! If you do find a container peony in bloom, you will also know exactly what color you are purchasing - which is not always the case with roots, which could get mixed up. Good luck with your peonies, and I'd love to see pictures!

Intersectional Peony in Container	Intersectional Peony Root

2012 How to Plant an Herbaceous Peony

Dig Hole for Herbaceous Peony
Herbaceous Peonies should be planted similar to Intersectional Peonies, taking care to make sure the root is facing the proper direction. This is very important for intersectional peonies as well and even more so with tree peonies. The first step and perhaps the most important step in planting a peony is preparing the soil. I usually dig at least a 3 foot round hole for each root, spading the soil with my shovel to make sure the dirt is nice and loose. After the hole is dug and the soil has been loosened, I add some organic fertilizer and lime (dolomitic limestone) to the soil in the hole and mix it in. The fertilizer is used to add nutrients to the soil and the lime is used to adjust the PH of the soil. In my area, most soils are acidic, and peonies prefer a more neutral to very slightly acidic soil, around a PH of 6.0 to 7.0.

Put Herbaceous Peony Root in Planting Hole
Next take a look at the peony root and make a smaller hole in the middle of your 3 foot round hole that will accommodate the size of the peony root. Herbaceous peonies stems die back to the ground each year. So there is not woody or semi-woody stem on the root. The herbaceous peony roots are usually a large storage root with perhaps smaller side roots and pink buds on the crown. The pink buds are where the new shoots and foliage will begin to emerge. Make sure to put the roots into the soil and try to put the buds pointing up towards the sky. In my southern climate the pink buds of the crown can be planted even with the soil, so that the roots are below the soil and the pink buds are slightly above, even, or just barely under the soil.

Cover Herbaceous Peony Root with Soil
Once the peony root has been planted, I cover the planting hole with a 1-2 inch layer of mulch, taking care to put only a small 1/2 inch layer of much over the crown itself. I may even leave it so the pink buds are barely visible or just below the mulch. You don't want to put too much mulch on herbaceous peonies in this climate. Otherwise the roots may not get enough chilling hours needed for blooming. They do however need enough mulch to retain moisture (It does get really hot here!) and prevent weed growth. After the peony has been mulched, I water the newly planted peony root. You can water your root before or after you mulch it. I just like to water mine afterwards because it seems like the soils stays in place a little better with the mulch already on top.

Mulch Herbaceous Peony

2012 Questions - Itoh Peony Planting Depth

Itoh Peony 'Barztella'

I received this question from Karen in Zone 6:
"How deep do you plant your Itoh peonies?"

Itoh Peonies are intersectional peonies. Toichi Itoh is credited with being the first hybridizer to successfully cross a tree peony with an herbaceous peony, resulting in an intersectional peony. Since these peonies are a cross between tree peonies with woody stems and herbaceous peonies with herbaceous stems, the stems of intersectional peonies are semi-woody. These stems can be left on the plant and cut back to the lowest bud or be cut off completely. This picture is of intersectional Peony 'Bartzella' whose stems were cut back to above the lowest bud. I have drawn a line on the picture to show the proper planting depth for this type of peony. The stems (above the red line) face up towards the sun, and the roots (below the red line) should be planted below ground. So the proper planting depth for intersectional (Itoh) peonies is right at this joint between the stems and the root. If your intersectional peony does not have any above ground stems, then I would recommend planting the roots below the soil with the eyes or buds facing up towards the sun. The eyes or buds should be even with the soil level or just below the surface of the soil.

2012 How to Plant an Intersectional Peony

Intersectional Peonies
Intersectional Peonies should be planted similar to Herbaceous Peonies, except a bit more care should be taken to make sure the root is facing the proper direction. This is important for herbaceous peonies as well, but more so with intersectional, and even more so with tree peonies.
Dig Hole for Intersectional Peony
The first step and perhaps the most important step in planting a peony is preparing the soil. I usually dig at least a 3 foot round hole for each root, spading the soil with my shovel to make sure the dirt is nice and loose. After the hole is dug and the soil has been loosened, I add some organic fertilizer and lime (dolomitic limestone) to the soil in the hole and mix it in. The fertilizer is used to add nutrients to the soil and the lime is used to adjust the PH of the soil. In my area, most soils are acidic, and peonies prefer a more neutral to very slightly acidic soil, around a PH of 6.0 to 7.0.
Put Intersectional Peony Root in Planting Hole
Next take a look at the peony root and make a small hole in the middle of your 3 foot round hole that will accommodate the size of the peony root. Intersectional peonies are hybrids of tree peonies and herbaceous peonies, and they exhibit some characteristics of both. The intersectional peony roots usually have a definite delineation between the roots and the stem. The stem usually has pink buds on it, from which the new shoots and foliage will begin to emerge. So make sure to put the roots into the soil and put the stems/buds pointing up towards the sky. In my southern climate the point where the roots meets the stem can be planted even with the soil, so that the roots are below the soil and the stems/buds are above the soil.
Cover Intersectional Peony Roots with Soil
Once the peony root has been planted, I cover the planting hole with a 1-2 inch layer of mulch. You don't want to put too much mulch on peonies in this climate. Otherwise the roots may not get enough chilling hours needed for blooming. They do however need enough mulch to retain moisture (It does get really hot here!) and prevent weed growth. After the peony has been mulched, I water the newly planted peony root. You can water your root before or after you mulch it. I just like to water mine afterwards because it seems like the soils stays in place a little better with the mulch already on top.
Mulch Intersectional Peony