Black Eyed Susans

learningasigoJune 22, 2007

In May I planted about 12 Black Eyed Susans that my sister gave me as she was thinning hers out. Up until last week they were doing fine. Not flowering, but bushing up and looking healthy. Yesterday I looked and the leaves are browning, not brown as in drying out, just dark brown and green leaves. Does anyone know what this could be? Sorry, no pics. I don't see any bugs on them. Other perennials in the bed are fine. I thought these were real hardy. I was really looking forward to them. Does anyone have any ideas as to what might be wrong and suggestions as to what I could do? Thanks.

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covella

About all you can do is water them well and take the dead material out. The roots should survive. Also ask your sister if she's experiencing the same - I suppose there could have been a soil-borne insect, virus, etc that came with them. Did you plant with any soil amendments? I've gotten contaminated stuff before.

    Bookmark   June 22, 2007 at 3:39PM
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triciae(Zone 7 Coastal SE CT)

Is it possible you've been overwatering since the transplant?

Tricia

    Bookmark   June 22, 2007 at 3:46PM
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saypoint(6b CT)

Did you use any herbicides near them? Or weed and feed on the lawn nearby?

    Bookmark   June 22, 2007 at 4:45PM
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donnabaskets(Zone 8a, Central MS)

Don't know if this is any help or not, but here in the deep south where it is so extremely hot, rudbeckia leaves will turn a very dark purplish/brown color as the summer progresses. They aren't scorched or dying, I just think they develop extra pigment.

    Bookmark   June 25, 2007 at 3:18PM
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justmetoo(z5 IL)

If you mean brown spots on the green leaves you may have a case of septoria leaf spot which Rudbeckia can get. Plants will look like roadkill but will bloom, it's the leaves that are bothered. Google it and see what you think, you'll also see how to deal with it.

    Bookmark   June 25, 2007 at 4:38PM
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learningasigo

Thanks for your responses. I did wonder if the discoloration of the leaves could be due to over watering. They were planted in a new evergreen berm. Since the trees, flowers are bushes are all new I've been watering them. However, as I water, I've been conscious not to over water things that don't require as much water.

I was able to talk to my sister over the weekend. She says Black Eyed Susans are susceptable to fungus and that's what it is. She says she told me that when she gave them to me....LOL. I don't remember that. So I don't know if that is true or if hers just have a fungus and so mine do. She says she sprays hers every spring with a fungicide and then they are okay through the summer. Any thoughts on that?

I didn't use Weed & Feed near there but I did paint some Round Up on the edges of the berm to kill the grass that was growing up through the mulch. I painted it, not sprayed it and the Black Eyed Susan patch is about 2.5 ft. from the edge of the berm.

Thanks, Jennie

    Bookmark   June 25, 2007 at 4:46PM
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learningasigo

Thanks, Justmetoo. I googled it and sure enough, that's it. And it is a fungus so my sister was right. I guess I'll do what she does and use a fungicide. Thanks again everyone.
Jennie

    Bookmark   June 25, 2007 at 4:54PM
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