Plant Database forum: I need some help with Cup Plant leaf anomalies, please.

Views: 384, Replies: 7 » Jump to the end
Name: Michele Roth
N.E. Indiana - Zone 5b
I'm always on my way out the door..
I was one of the first 300 contributors to the plant database! Forum moderator Garden Sages Garden Ideas: Master Level Dog Lover Cottage Gardener
Native Plants and Wildflowers Plant Identifier Organic Gardener Keeps Horses Hummingbirder Hosted a Not-A-Raffle-Raffle
Image
chelle
May 7, 2013 4:46 PM CST
Cup Plant (Silphium perfoliatum)

Some images show leaves with long petioles, and some show leaves with no petioles. Are the leaves attached differently on different parts of the plant?
Cottage Gardening

Newest Interest: Rock Gardens


Name: Sherry
Northern California
Sunset Zone 17
Charter ATP Member I was one of the first 300 contributors to the plant database! Region: Pacific Northwest Seed Starter Region: California Plant Identifier
Image
wcgypsy
May 7, 2013 5:18 PM CST
I see what you mean. In taking a look at the pics to see what you're talking about, the ones in question may be pics that I submitted. I've grown this one as silphium perfoliatum, but, in comparison, mine indeed do not have the 'cup' effect where the leaves attach to the stem. My pics may need to be removed and I'll check to see if there is another silphium that mine may be. Took the seeds in trade...
I could be wrong...
and.....
"maybe I should have kept my mouth shut....."
Name: Michele Roth
N.E. Indiana - Zone 5b
I'm always on my way out the door..
I was one of the first 300 contributors to the plant database! Forum moderator Garden Sages Garden Ideas: Master Level Dog Lover Cottage Gardener
Native Plants and Wildflowers Plant Identifier Organic Gardener Keeps Horses Hummingbirder Hosted a Not-A-Raffle-Raffle
Image
chelle
May 7, 2013 6:33 PM CST
I got mine in a trade, too. I haven't yet seen any of the cup leaves on mine. They look more like yours. Mine hasn't set its first bloom buds, however, so I wasn't sure if it was a different plant, or if it was just a matter of time. Smiling

Cottage Gardening

Newest Interest: Rock Gardens


Name: Sherry
Northern California
Sunset Zone 17
Charter ATP Member I was one of the first 300 contributors to the plant database! Region: Pacific Northwest Seed Starter Region: California Plant Identifier
Image
wcgypsy
May 7, 2013 6:49 PM CST
Well, I've just been checking and mine does not appear to be s. laciniatum, s. mohrii, s. integrifolium, s. albiflroum, s. terebinthinaceum, or s. radula. I'm at a loss here.....
I could be wrong...
and.....
"maybe I should have kept my mouth shut....."
Name: Sherry
Northern California
Sunset Zone 17
Charter ATP Member I was one of the first 300 contributors to the plant database! Region: Pacific Northwest Seed Starter Region: California Plant Identifier
Image
wcgypsy
May 7, 2013 6:53 PM CST
I just went out and grabbed a pot ...I have a couple in pots to 'take with' when we move (hundreds of pots, don't ask....lol..).

The leaves are opposing, but no 'cup'....

Will check again against online pics of various silphiums....Thumb of 2013-05-08/wcgypsy/3a5dfc
I could be wrong...
and.....
"maybe I should have kept my mouth shut....."
[Last edited by wcgypsy - May 7, 2013 6:54 PM (+)]
Give a thumbs up | Quote | Post #403111 (5)
Name: Kent Pfeiffer
Southeast Nebraska (Zone 5b)
Charter ATP Member I was one of the first 300 contributors to the plant database! Plant Database Moderator Plant Identifier Region: Nebraska Forum moderator
Garden Sages Garden Ideas: Master Level Irises Celebrating Gardening: 2015
Image
KentPfeiffer
May 7, 2013 9:16 PM CST

Plants Admin

Seedlings of Cup Plant typically have petiolate leaves. The basal and lower stem leaves of mature plants usually have petioles as well. Those leaves are generally gone by the time the plant flowers, though, so people just notice the perfoliate leaves (the classic cups) that are found on flowering stems. All of the pictures in the database, and Sherry's picture above, appear to be Cup Plant to me.

However, one thing to keep in mind is that Silphiums hybridize freely between species ("promiscuous" is the word botanists like to use). If the person you received the seed from had other species of Silphium growing nearby, like S. integrifolium, it's possible that they collected seeds from Cup Plant, but unknowingly gave you hybrids. That said, I think if you let them grow to flowering size, you'll find that they look like they are supposed to.
Name: Sherry
Northern California
Sunset Zone 17
Charter ATP Member I was one of the first 300 contributors to the plant database! Region: Pacific Northwest Seed Starter Region: California Plant Identifier
Image
wcgypsy
May 7, 2013 10:08 PM CST
Thank you, Kent, for the clarification. I've grown them for several years now and I'll take a closer look when they've once again reached full size.
I could be wrong...
and.....
"maybe I should have kept my mouth shut....."
Name: Michele Roth
N.E. Indiana - Zone 5b
I'm always on my way out the door..
I was one of the first 300 contributors to the plant database! Forum moderator Garden Sages Garden Ideas: Master Level Dog Lover Cottage Gardener
Native Plants and Wildflowers Plant Identifier Organic Gardener Keeps Horses Hummingbirder Hosted a Not-A-Raffle-Raffle
Image
chelle
May 8, 2013 5:11 AM CST
Thanks so much, Kent. That's what I suspected, but now I know. Thumbs up
Cottage Gardening

Newest Interest: Rock Gardens


« Garden.org Homepage
« Back to the top
« Forums List
« Plant Database forum
You must first create a username and login before you can reply to this thread.

Today's site banner is by dirtdorphins and is called "Dianthus 'Nyewood Cream'"