Grindelia integrifolia

[fleurbleue]

Hi all,
I haven't found these seeds on the seedlist 2009 ; does anyone grow this plant and have collected seeds please  ? I can  send my seedlist for swaping if somebody is interested in  Thanks for yours answers by pm

[Giles]

Nicole,
Have you tried here?
http://www.jelitto.com/intro.html
(under perennials)

[Diane Whitehead]

I didn't send any of it this year, but I will look for some along the
shore.  I will let you know if there is still seed - we are having a
storm right now, so it might have all been battered away.

[fleurbleue]

Thank you very much Diane and Giles 

[Diane Whitehead]

Yes.  I collected some seeds today.  I will let them dry (we have had a
lot of rain) and then send it to you.  Send me a personal message
with your address.

Many of the plants are still flowering.

[Ed Alverson]

Keep in mind that the taxonomy of this species is subject to various different interpretations.  The plant that Diane collected seed from is probably the salt marsh/rocky seashore plant that was formerly known as Grindelia integrifolia var. macrophylla, now considered a separate species as either Grindelia stricta or Grindelia hirsutula.  Grindelia integrifolia in the narrow sense in an inland prairie species that is very rare in British Columbia, more common to the south in western Oregon.  Grindelia stricta (Diane's plant) has longer ray flowers than G. integrifolia and thus may be more showy, so possibly that is the form that you want. 

I would be on the watch for both species, but especially G. integrifolia s.s., for weedy tendencies; they may have the potential to become invasive in a garden as well as in the wild.

Ed

[fleurbleue]

Hello Ed,
Thank you and I shall take your advice 
Cheers

[Stephenb]

I think it was on a trip to California some years ago now that I saw these plants for the first time and read that the sticky white resin that exudes from the young flowers could be used as a kind of chewing gum (although there's no reference to this in Moerman's Native American Ethnobotany). I finally got hold of some seed of Grindelia robusta (although that doesn't seem to be a valid name). It seems to be fairly short-lived. I haven't tried keying it out yet. Any opinions as to what it is?

Nevertheless they are fascinating plants which people always remark on. I've also had Grindelia nana (didn't survive the winter) and G. integrifolia (died after 2 years); last picture - very similar....

Unfortunately, I don't have any seeds this year.

[Diane Whitehead]

The seeds I collected are from these plants at the Oak Bay Marina
in Victoria B.C.  Grindelia grows along the shore in many places
on southern Vancouver Island, always in rocky areas above the
reach of the tide. In the first photo, you can see several seagull
feathers.

It also grows along the highway, accompanying a European import -
Lotus corniculatus.

[DivaDeva]

You can find the seeds for Grindelia Integrifolia at Horizon Herbs under "Gumweed" https://www.horizonherbs.com/group.asp?grp=45&pgNUM=5
It's used here in the States for healing Poison Oak and bee stings. For the same purpose, I also grow Jewel Weed. I have difficulty with Gumweed
here in Northern CA because we have long dry summers. It doesn't have a long life span, even with supplementary watering. I can't provide
seeds, this plant considers the environment adversarial and will not commit to offspring.

[Maggi Young]

Hi, DivaDeva, welcome to the Forum.

this plant considers the environment adversarial and will not commit to offspring.

.... ah, yes, how often do we gardeners have to say this about a plant......you'd almost think with some plants that they are in a conspiracy against us!