Tag Archive for: Caulophyllum giganteum

Caulosaurus

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Young Caulosaurus :)

While talking Caulophyllum, here’s something I didn’t get around to show in late September last year: a bunch of Caulophyllum (most probably giganteum) 2 years old seedlings I dug out to replant.

 

As mentioned before, the large seeds of Caulophyllum, which require 2 years for germination, can be easily sowed ‘in situ’ (in the garden, woodland floor) in a shaded area, preferably close to another perennial/shrub. During dry spells some watering is required; otherwise there is nothing else to do.
When ready, they will germinate. If sown well-spaced there is no need to transplant them.

One early spring pleasure is to see the purple shoots erupting from the woodland floor. I still hope to be able to do it. Until then, the little ones from the garden are doing a good job.

 *Attention to the clients who have purchased seeds 4 years ago as C. thalictroides: it is very probable you actually have C. giganteum.

Caulophyllum giganteum seedlings: all seen here were sowed/ growing too close together; it was a good time to dig them up and replant them properly in September

 

 

Purple beasties – Caulophyllum

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Spring is evolving fast here in Ontario; Hepatica, Sanguinaria canadensis and Claytonia are flowering in our woods. Also, in some places blackish/purple beasties are erupting from the leaf mulch and growing with the speed of light – I am talking about the blue cohosh, Caulophyllum shoots :)

I wrote few times about Caulophyllum (referring in general to both C. thalictroides and C. giganteum) and its seeds, which are hydrophyllic and slow to germinate.
In this post I would like to bring to your attention two things:
The seeds offered up to this year were collected from a mix population of C. thalictroides and C. giganteum. Later in the season they are indistinguishable. C. giganteum is more desirable because has a deeper purple colour, purple flowers, and it gets taller. Depending on the luck, some may obtain C. giganteum seedlings.

This year the seeds of C, giganteum will be offered separate, from a localized population.

Caulophyllum giganteum in early spring

Caulophyllum giganteum, the shoots are coming up with the flower buds which open right away after few sunny days

Then, about germination: the seedlings are also appearing in my garden, and I can show two easy methods to germinate/grow it, without keeping around pots for 2-3 years until the seeds germinate.

  1. Sow the seeds into a compostable container buried into the ground (close to a large perennial, shrub) where you will water once in a while; cover with a mesh to discourage critters. A layer of leaves mulch can also be used in late fall, to mimic the natural environment.

Caulophyllum seeds sown in compostable container, which can remain in place

Caulophyllum seedlings, a bit hard to notice because of the colour

2. Sow the large seeds directly into the garden, also close to a large perennial or shrub, where you know the soil won’t be disturbed. In my picture the seedlings are growing now among Polygonatum buds.

Caulophyllum seedlings obtained by direct sowing in the ground

In a couple of years they can be dug up and planted at the desired place.

Stay tuned – Hepatica acutiloba and H. americana are in full flowering mode :)

Out in the woods – the Blue Cohosh

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A short hike revealed quite a change of the woodland floor with a few ‘faces’ familiar to everyone, like the trout lily (Erythronium americanum), spring beauties (Claytonia spp.), mayapple (Podophyllum peltatum) and Trillium ready to flower but also forgotten woodland treasures such as the Blue Cohosh (Caulophyllum thalictroides).

Spring woodland flowers

 

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 Caulophyllum thalictroides – Blue Cohosh, papoose root, squawroot

Blue cohosh is an impressive plant, easy to recognize in early spring by the strikingly beautiful purple, almost back shoots. The foliage will change later to green and resemble the meadow rue (Thalictrum), hence the epithet ‘thalictroides’.

‘Cohosh’ is believed to derive from an Algonquian word meaning ‘rough’, referring to the texture of the plant’s rhizome, while ‘blue’ comes from the unusually blue seeds. Also the stem and leaves are covered with a bluish film early in the summer.

Caulophyllum thalictroides shoot in early spring

Caulophyllum thalictroides shoot in early spring

The small purplish or yellowish green flowers would not qualify for a beauty contest but not the same goes for the blue seeds adorning the stems in the fall. For combinations in the garden, only imagination is the limit: a mix palette with early spring flowering native species (Claytonia, Erytronium, Sanguinaria) or for an European decor combined with: Corydalis solida, early primroses, Anemone nemorosa, Ranunculus, so on…For part-shade to shade locations, in rich humus soil.

 Other uses:

Blue cohosh was used medicinally (powder rhizomes) by various native American tribes, mainly to promote childbirth (‘squawroot’) but also for: anxiety, rheumatism, stomach cramps and genito-urinary dysfunctions. It contains a number of active compounds among which caulosaponin is a powerful stimulator of uterine contractions (under medical attention it is still used in modern herbal medicine as a natural labour-inducing stimulant).