Penthorum sedoides (Ditch Stonecrop)
|Also known as:|
|Family:||Penthoraceae (Ditch Stonecrop)|
|Habitat:||part shade, sun; wet soil, ditches, along shores, marshes|
|Bloom season:||July - September|
|Plant height:||6 to 24 inches|
|Wetland Indicator Status:||GP: OBL MW: OBL NCNE: OBL|
|MN county distribution (click map to enlarge):|
|National distribution (click map to enlarge):|
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Flowers are in raceme-like branching clusters in the upper part of the plant. Individual flowers typically have no petals. Around the center are 5 carpels (pistil parts) shaped something like a beaker or decanter. They are surrounded by 10 stamens with creamy white tips that turn brown with age. The flowers are typically on only 1 side of the stem, and the clusters tend to fan out.
Leaves and stem:
Leaves are up to 4 inches long and 1¼ inch wide, finely toothed, hairless, with a pointed tip and tapering at the base. There is little or no stalk. The main stem may be sparsely hairy and is sometimes angular.
In late summer the carpels turn red and seed capsules develop, each containing many seeds.
Ditch Stonecrop isn't very showy until it fruits, then it can be quite a nice splash of color. Penthorum has been shuffled around various families, at one time in Penthoraceae, then Saxifragaceae, then Crassulaceae, and now is back to Penthoraceae.
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Photos by K. Chayka taken at Vadnais/Snail Lake Regional Park, Ramsey County. Photos courtesy Peter M. Dziuk taken in Anoka County.
Have you seen this plant in Minnesota, or have any other comments about it?
on: 2017-04-19 11:40:02
Growing in an oxbow restoration on Touch the Sky Prairie NWR.
on: 2017-07-20 15:48:32
I have a very nice specimen of what appears to be Ditch Stoncrop growing in my garden along our curb. First came up last summer, this year it has grown quite a bit larger and full of blooms! I'd send a picture, but I don't see where to do that here. My question about the plant is if it would tolerate a being transplanted? It came in a load of dirt we had delivered four years ago when we created our garden. I like it, but not exactly where it's landed.
on: 2017-07-20 20:37:30
Christine, plants are best transplanted when they are dormant.
on: 2019-08-29 14:02:49
Very close to water, about 6 specimens, 6" to 10" tall. Beautiful in late August with autumn color coming on.
on: 2020-08-11 14:10:18
I saw this while walking through the Quaking Bog on 8/10/ 2020.