Plant ID forum: Water Dropwort (Oenanthe javanica)

Views: 307, Replies: 3 » Jump to the end
Name: Rob
Lehigh Valley, Pennsylvania (Zone 6b)
Ever looking for new plants to kill
Seed Starter Frogs and Toads Celebrating Gardening: 2015
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plantrob
Aug 9, 2015 7:35 AM CST
I've believed this plant to be watercress ever since it was included (with warnings of its aggressive behavior) with the plant package by the company that installed our pond. I just noticed that the leaves are rather different from those in most pictures of watercress (see Watercress (Nasturtium officinale)), and the flowers don't look quite the same either. The leaves do taste a bit peppery, so perhaps it's a relative? The photo below was taken just yesterday, giving an idea of flowering time.



Rob from Pennsylvania - robsplants.com
Name: Greene
Savannah, GA (Sunset 28) (Zone 8b)
Rabbit Keeper Critters Allowed Celebrating Gardening: 2015 Plant Identifier Garden Ideas: Master Level Garden Sages
Herbs Region: Georgia Region: United States of America Native Plants and Wildflowers Dog Lover Composter
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greene
Aug 9, 2015 7:56 AM CST
It could be Water Celery/Water Parsley/Oenanthe javanica. Shrug!
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~~"Leaf of Faith"
Name: Rob
Lehigh Valley, Pennsylvania (Zone 6b)
Ever looking for new plants to kill
Seed Starter Frogs and Toads Celebrating Gardening: 2015
Image
plantrob
Aug 9, 2015 11:27 AM CST
Thank You!
Absolutely, that's it. Thanks! Hard to find information online that's not for the 'Flamingo' variegated cultivar.
Rob from Pennsylvania - robsplants.com
Name: Greene
Savannah, GA (Sunset 28) (Zone 8b)
Rabbit Keeper Critters Allowed Celebrating Gardening: 2015 Plant Identifier Garden Ideas: Master Level Garden Sages
Herbs Region: Georgia Region: United States of America Native Plants and Wildflowers Dog Lover Composter
Image
greene
Aug 9, 2015 12:20 PM CST
It's a fine plant IF you do not let it escape captivity. Thumbs up

I had planned to say that the invasive potential of this plant is less of a problem in the colder climate of the northeast but can be quite invasive in warmer climates, but...I see that only recently have folks begun to realize that this plant can survive cold winters and grow on to spoil our natural waterways. Here is something from Wisconsin:

http://host.madison.com/news/local/environment/task-force-ta...
Sunset Zone 28, AHS Heat Zone 9, USDA zone 8b~~"Leaf of Faith"

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