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My Gaia · Jul 28, 2026

Jack-in-the-pulpit

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Diane Porter · My Gaia

Jack and I have lived near each other for a decade now. He changes a lot, and I enjoy his company in every phase.

In May, he waves at me from his pulpit in the shade garden. And I see how the plant got named for a preacher speaking from a rather flamboyant pulpit.

Jack-in-the-pulpit (Arisaema triphyllum)

The “preacher” is the central column, called the spadix, that bears the flowers. You normally can’t see the tiny flowers because they are clustered around the lower part of the spadix. The sheath around the spadix, that hides the flowers, is called the spathe. That’s the pulpit.

The top of the spathe-pulpit arches over Jack’s head and forms the waving roof.

By July, the fertilized flowers on the spadix have become green berries. The spathe has withered away to almost nothing. Up at the top, the leaves are wilting and going pale.

Spathe withered to shreds around the green berries

When they’re green, the berries are hard and shiny as polished rock. Jack-in-the-pulpit berries contain irritating calcium oxalate crystals. Its tiny needles puncture the tissues of the mouth and tongue and sting painfully.

The shine on the green berries

You’d think that no wild animal would eat them, but my experience is that sometimes they do get munched in my garden at the first hint of ripening. If I want to save the berries, I now enclose the head in an organza drawstring bag, and I’ve never lost a berry so protected.

Ripe berries and a fallen stem, all that is left aboveground of Jack

As summer wanes and the berries ripen, the leaves wither away and the softening stem collapses. I’ve seen a head of red, red berries lying on the ground.

I wear surgical gloves when I collect and process the berries. Those calcium oxalate crystals can irritate the skin, I’ve heard, though when I’ve accidentally touched them, I’ve not experienced any such effect.

Jack-in-the-pulpit berries | Seeds removed from berries

Under running water, I squish the seeds out of the berries, which are almost as soft as jelly. I get one to three seeds from each berry. I refrigerate the cleaned seeds until February, when I plant them outdoors in a space protected from digging animals. They make one simple leaf the first year, but the next year they usually have one leaf divided into three attractive green leaflets.

Baby Jacks in their second year

I plant them in shady spots in the garden or the woods. Many have gone home in the hands of smiling friends who are delighted to add this lovely native plant to their backyard garden.

Jack makes friends wherever he goes.

Jack among ferns and mosses at Iowa’s Lacey-Keosauqua State Park
With thanks to Care and to Gerry, the friends who gave me my first starts of Jack-in-the-pulpit.

Read the original on mygaia.substack.com

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