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How do Actaea or Cimicifuga varieties differ?

11 years ago
last modified: 11 years ago

I have 3 James
Compton. Though from what I read about them they are supposed to grow to be
about 3 feet tall at maturity extending to 4 feet tall with the flowers, with a
spread of 3 feet; mine have not topped 1 foot high, with a spread of maybe 18
inches, and I’ve had them at least 10 years, probably longer. Most years they
don’t bloom. Whether its too much shade, or not enough moisture, I don’t know.
I have them in 2 different beds, one of which is moister than the other (house
shade vs. tree shade); performance the same.

Last summer I
bought ‘Black Negligee’ , as I wanted a dark foliaged lacy looking
plant for a different bed. I don’t know what to expect of that vs. the
lackluster performance of the James Comptons. That one will get an hour or 2 of
sun midday. That
one was really impressive when it bloomed last fall, though that could be going
on the grace of the nursery. It’s up less than the other established plants,
but what I see looks really vigorous.

I was ordering some
bare root plants from a nursery that had a small woodland plant selection; and
saw Black Cohosh or American Bugbane (aka Actaea racemosa or Cimicifuga
racemosa), which I believe is the species not a cultivar. I ordered them spur
of the moment. Since they don’t seem to
have purple leaves (which escaped me at the time) I was going to put them at the
back of my small “woodland” garden, where my neighbor’s grey painted fence is.
I keep hoping for something tall enough to hide some of it, but no luck so far.
The bed has 3 ash trees, but hostas and various ferns do well, so it must be
moist enough for them.

Does anyone grow this? Thanks!

Comments (8)

  • 11 years ago

    I have 'James Compton' as well and totally agree with you. Very shy flowering in my Dutch garden. I have the plant about 10 years and most years it doesn't flower. Mine is in full sun on humus rich sandy soil. I water it in dry summers to prevent the leafs becoming shrivelled. If you want flowers don't plant 'James Compton'. I prefer good old reliable 'Brunette'.


  • 11 years ago

    I have grown the species racemosa for years and it will be perfect for your woodland garden. Mine is backed by forest but still gets morning sun and some root competition from mature trees. Since they do not have the dark foliage they can take more shade.

    I agree that 'Brunette' is terrific as well as 'Hillside Black Beauty' which I find virtually the same. I got 'Pink Spike', it flowered white but I like these plants so much I was not terribly disappointed. The varieties with dark foliage need more sun to retain good color. Moisture retentive soil will keep the foliage pristine all season.

  • 11 years ago

    I have straight species and 'Brunette'. They both get leaves 1 1/2 to 2 feet tall. I've never seen the green one bloom, but 'Brunette' blooms at 4-5' tall. I love the flowers as do the pollinators, but the scent isn't such that I would want it near an open window.

    There are some really tall Solomon's Seal (Polygonatum) that might work for you. Also look into some of the Viburnum shrubs, some of which do fine in shade though need a fair amount of space. I have Viburnum plicatum 'Popcorn' and V. p 'Mariesii' as well as two natives, V. acerifolium and V. cassinoides Since I have all these growing in the woods, they must be OK with some root competition and shade.

  • 11 years ago
    last modified: 11 years ago

    Thank you!

    Gardenprince, it’s interesting that your James Compton is in full sun and
    doesn’t flower, whereas mine is in full to dappled shade and doesn’t flower. I
    may move the one that is in the woodland garden. The leaves are pretty but
    since it never achieves any height, I can’t see it there. I’ll plug one of the new
    species racemosa into its spot.

    Peren.all, NHBabs, what kind of spread does your species racemosa have? I’m
    staking out locations. They are coming bare root next week.

    I’ll have to see how Black Negligee does this year. It was a costly impulse purchase
    at a local nursery with high prices. It was a large specimen, though. Of course now I want it to justify my faith. The
    flowers did not smell bad, though: quite the opposite.

    I’ll have to keep my eyes open for Brunette or Hillside Black Beauty.

  • 11 years ago

    My species is probably about 3' across. I'm fussy about scents and have learned that just because a plant is scented doesn't mean I want to grow it for the scent, though there are some I grow despite the scent. I like the scents of rose, peony, and lavender and spicy scents like spicebush and some of the citrus scented geraniums and most culinary herbs, but there are quite a few I don't find appealing, so you should probably take peren.all's recommendations on scent over mine.

  • 11 years ago
    last modified: 11 years ago

    A pic from yesterday of the new leaves of Cimicifuga 'James Compton':


    'Pink Spike' probably has that name for commercial reasons. I've seen it in a friend's garden and does not differ that much from other dark leaved cultivars. Not a bad plant but if you read the words 'pink spike' you expect to get a plant with pink and not white spikes ;)


    I really love the scent of Cimicifuga (still refuse to call them Actaea). Wish I could bottle it!


  • 11 years ago
    last modified: 11 years ago

    Glad to know
    the ultimate size of the species racemosa. I will have to
    rearrange my plans….better now than later. When I am planting a bareroot
    sometimes it’s hard to visualize. They are due on Tuesday.

    The far end of the beds have the most room for spread. I
    just moved two standard goatbeards there, from the center where they were too
    tall. I think I’ll put 2 of the racemosa next to them, and center the third
    where I take out the old James Compton. I’ll move the latter to a sunnier spot,
    maybe it will do something.