Sunday, November 10, 2013

2013 Questions - Forcing Dormancy in Warm Climate

I received this question from Chris in Zone 10:
"I live in the city of San Francisco and grow peonies in containers on our sunny south facing patio. Have had a great deal of success with blooming. Many varieties have done well.... both herbaceous and tree. However, this year, the peonies won't go to sleep like they are supposed to. I cut down the leaves and stalks of the herbaceous and cut the leaves off all the tree peonies three weeks ago. Now, the red eyebuds are swelling and many are putting out new growth and leaves in late October. It is in the high 40s at night, but we won't get into the 30s in the City. My question is what to do. Should I let them grow? Or prune and force them into dormancy... if possible? This did not happen last year, and the peonies came out in mid January. Thanks for any advice you could share."
Tree Peony 'Dou Lu'
Peony 'Raspberry Sundae'

My concern would be that after you trim the foliage, more would start to grow provided the temps are the same or warmer.

In future years I would recommend leaving the foliage on a lot longer into the late fall/ early winter which should help prevent this premature leafing out. From your email it sounds like you cut back the foliage in early October which is much too early for your growing zone 10b. I am in growing zone 7b, and about half of my peonies that are planted in the ground here at this time of year (early November) still have their foliage. So next year I would recommend waiting until at least the beginning of December or even late December to cut back the foliage in your growing zone. I know the foliage will probably start to look quite ratty, but if it can die back naturally it is best to let it attempt to do so. Also the fall season is when the plant is absorbing the nutrients in the leaves back into its roots. So the longer you can leave the foliage on the peony during this time, the better.

As for this year's early leaf out, I cannot say what will be the best for the plant in the long run. However if the leafing out is not too much, you may attempt to trim the foliage to force the plant into dormancy, but if you select this method I would recommend some other aids in helping to force this dormancy. Do you have a dark, cool place in your home, perhaps a garage or basement? If so you may want to move the potted peonies to a location such as this to limit the temperature and light the plants receive. Also I've heard of other growers in CA putting ice on top of their peonies to simulate a winter chill. This may be another option for you. However I'm not sure how long you would need to maintain an ice covering. So this may be something you'd want to research.

If the leafing out has already developed into a large growth, you may just want to leave the plants as is this year (as long as there is no danger of frost). If for some reason you do get some freezing weather, you'd want to bring the pots in overnight only. Sometimes it is best to let Mother Nature do her own thing. I have ordered some peonies from vendors in cooler areas then mine, and had the peonies leaf out in late fall. I usually just leave them as is. Since I do have frost here in the winter, any shoots that have leafed out will die back when we get a cold frost. This does seem to set the plant back a little in terms of growth and development, but they do always seem to survive. They may just take a little longer to get established. Since you don't usually have any danger of frost, the foliage may grow fine for you.

Good luck with your potted peonies this winter. Please keep me posted on what you decide to do with them and how they fare in the spring! :-)

Wednesday, November 6, 2013

2013 State Fair Flower Show Ribbons, No Peonies

I was excited to enter the NC State Fair Flower Show this year. I hadn't entered since 2010, my first year. I won 3 3rd place ribbons that year. I researched suggestions for keeping flowers from wilting and groomed all of my specimens. So I was hoping for a better outcome this year as far as ribbons, and I must say I wasn't disappointed. I took home 3 1st place ribbons and 1 2nd place ribbon. Nice! It makes me want to do it again. The only bad thing is I can't show any peonies since it is the totally wrong season. So now with a little more flower show experience under my belt, it makes me want to enter the American Peony Society flower show at the 2014 APS Convention. Too bad I will miss the convention next year. Maybe 2015 will be the first year I can enter the peony competition! :)

NC State Fair 1st Place Blue and 2nd Place Red Ribbons

Thursday, October 31, 2013

2013 Cheap Versus Expensive Tree Peonies

I guess time and again, when it comes to peonies, just about like everything else, you get what you pay for. I was pleased when I received my first official tree peony order from Tree Peony Garden, a peony grower in the US who focuses mainly on tree peonies. Not only were these tree peonies much more expensive, they were much, much larger and fresher than the cheaper Tree Peonies from China I purchased through Ali Express. The tree peonies I ordered from Tree Peony Garden are 'High Noon', 'Kamatafuji', and 'Li Yuan Chun 李园春'. Peony 'High Noon' is an American tree peony cultivar and an APS Gold Medal Winner in 1989, while Peony 'Kamatafuji' is a Japanese tree peony cultivar, and 'Li Yuan Chun 李园春' is a Chinese tree peony cultivar. While I ordered 2 year old tree peony plants for all three of these cultivars, it looks like they sent me a much larger and older specimen of the center one in the photo (Peony 'Li Yuan Chun 李园春'). Perhaps they ran out of 2 year old tree peonies in this variety. It was so huge I was tempted to split it in half, with three large branches and lots of roots! However I decided to let it grow as it, hoping to get a nice blossom from it in the spring. :-) I am looking forward to growing all three of these tree peonies which represent different cultures and regions of important tree peony growers and climates from different parts of the world.

Tree Peony Roots from Tree Peony Garden

Sunday, October 20, 2013

2013 Song Sparrow Fall Peony Sale - Buy 2 Get One Free

They are at it again! I don't know of any other peony farm who reliably discounts their peonies in the fall (and who also sends large, correctly labeled plants) besides Klehm's Song Sparrow. Last year they ran a similar Fall Sale. I am on the email lists for several other major growers, and Song Sparrow definitely is the best at offering fall discounts. Their prices are not cheap, but they are not exorbitant either, and their current sale makes their offerings all the more attractive! I received the sale email on Friday, October 18th and the sale runs through November 3rd. They are currently offering Receive three Peonies for the price of two. So if you haven't yet gotten your fall 2013 peony order in, head on over to see if the varieties you're interested are still in stock. With this sale, I'm sure the hottest and award winning varieties will be selling out quick! :-)

Song Sparrow Fall Peony Sale - Buy 2 Get One Free

Friday, October 18, 2013

2013 APS Peony Donation to JC Raulston Arboretum

I finally had a chance to dig up peonies in my yard for donation this past weekend. This box of peonies went for a ride to my local arboretum. Through a joint project I've been working on with the American Peony Society and the JC Raulston Arboretum, I was able to gather over 40 peonies for donation to a local public garden. I personally donated 9 of the peony varieties myself. I guess you could say I had a slight incentive in being able to drop them off instead of having to pay the shipping costs to send them through the mail. The peony varieties I donated were: 'Angel Cheeks', 'Bowl of Cream', 'Chalice', 'Coral Charm', 'Do Tell', 'Festiva Maxima', 'Honor', 'Mother's Choice', and 'Seashell'.

Peony Donation for the JC Raulston Arboretum

There were several other donors to the project who I am very thankful for that helped make this project a great success: Adelman Peony Gardens, Hollingsworth Peonies, Rarity Gardens, Song Sparrow, and a local garden nursery, Homewood Nursery. I also wrote an APS Bulletin article about this project, which I will publish here when the bulletin comes out. I'll also be keeping a close eye on the peonies at the arboretum, and I'll definitely posts updates on their progress. I was so happy to work on this Public Gardens Peony Donation Project, and I can't wait to find the next public garden or arboretum in need of a large peony donation! If you have a suggestion, please leave a comment or contact me. :-)