How fast do herbaceous peonies grow?

stevelau1911October 30, 2013

I am potting up some regular herbaceous peonies, all with plenty of eyes and mass. Does anyone know how fast these tubers grow?

For example, how much will a 1 pound peony weigh after 1 season of growth?

I want to make sure that I'm not under-potting these peonies and potentially getting them root bound on their first year.

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Hi Steve, from my experience the vast majority of herbaceous peonies grow as fast as the Itohs but there are a few that grow much slower. From what I've seen, if you have a herbaceous root that has a woody part and 1 or 2 yam looking feeder roots it will at least double in size, weight and number of feeder roots in a year, sometimes a bit more than that. I'd say a 1-2 eye division that is fast growing would need to go in a 2 gallon pot to make sure it won't run out of space. A 3-5 eye division with a couple of feeder roots would need to go in a 3-5 gallon one.

What variety is your herbaceous? Do you know if it's a fast or slow grower?

    Bookmark   November 1, 2013 at 6:38PM
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I have no idea because I have a huge variety of them so I might have fast and slow growers. If they double up in size, that shouldn't be a problem just yet.

I planted them ensuring that their is at least 4-5X more soil mass than the tuber mass. Anyways thanks for the info.

    Bookmark   November 1, 2013 at 11:21PM
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calistoga_al ca 15 usda 9

For me the minimum pot size for a new division is 3 gallon. Al

    Bookmark   November 2, 2013 at 10:33AM
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