Plant ID forum: Locust (Robinia)

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Name: Catmint/Robin
Maryland (Zone 7a)
Region: Mid-Atlantic Butterflies Forum moderator Native Plants and Wildflowers Bee Lover Echinacea
Region: Maryland Garden Photography Cottage Gardener Garden Ideas: Master Level Celebrating Gardening: 2015 The WITWIT Badge
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Catmint20906
Aug 16, 2015 10:10 AM CST
Volunteer tree that's sprouted up very quickly in a hard to reach place. I cut it back once to what I thought was a stump, but it sprouted new leaves and continued growing. It has thorns. At first I assumed it was a callery pear, but I'm not sure the leaves are right for that?

Thumb of 2015-08-16/Catmint20906/96a92e

"One of the pleasures of being a gardener comes from the enjoyment you get looking at other people's yards”
― Thalassa Cruso
springfield MO area (Zone 6a)
I was one of the first 300 contributors to the plant database! Plant Identifier
Frillylily
Aug 16, 2015 10:29 AM CST
locust of some sort would be my guess. A weed tree IMO and I'd get rid of it. They can have very large nasty thorns. I don't know for sure though, so don't wack it out until someone else chimes in.
Name: Catmint/Robin
Maryland (Zone 7a)
Region: Mid-Atlantic Butterflies Forum moderator Native Plants and Wildflowers Bee Lover Echinacea
Region: Maryland Garden Photography Cottage Gardener Garden Ideas: Master Level Celebrating Gardening: 2015 The WITWIT Badge
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Catmint20906
Aug 16, 2015 10:36 AM CST
thanks, Frillylily! Thank You!
"One of the pleasures of being a gardener comes from the enjoyment you get looking at other people's yards”
― Thalassa Cruso
Name: Sue
Ontario, Canada (Zone 4a)
Daylilies Birds Enjoys or suffers cold winters Native Plants and Wildflowers Butterflies Annuals
Region: Canadian Keeps Horses Dog Lover Plant Identifier Garden Sages
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sooby
Aug 16, 2015 11:42 AM CST
According to my Peterson Field Guide, the only thorny plants with compound leaves (both opposite and alternate) are locusts, as well as a couple of aralias, zanthoxylums and Poncirus trifoliata, the latter having trifoliate leaves so not that. Looks more like a locust to me. I went out and took these two pictures to compare, this is 'Shademaster' honeylocust (the "civilized" honeylocusts like this don't have the thorns):

Thumb of 2015-08-16/sooby/d65032

Thumb of 2015-08-16/sooby/583702

This one is a Gleditsia, but there are several other locusts (Robinia) and I haven't looked all of those up to see if they're similar. I don't think it's a black locust (R. pseudo-acacia) because the leaves would be more rounded.



springfield MO area (Zone 6a)
I was one of the first 300 contributors to the plant database! Plant Identifier
Frillylily
Aug 16, 2015 1:36 PM CST
I should also add that these trees get very large (huge) and have a very invasive root system. They sometimes spread by suckers and also seed. Maybe depends on the type.
Name: Catmint/Robin
Maryland (Zone 7a)
Region: Mid-Atlantic Butterflies Forum moderator Native Plants and Wildflowers Bee Lover Echinacea
Region: Maryland Garden Photography Cottage Gardener Garden Ideas: Master Level Celebrating Gardening: 2015 The WITWIT Badge
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Catmint20906
Aug 16, 2015 2:16 PM CST
Thanks so much Sue and Frilly! Thank You! Hurray! sounds like I should try again to take it down.
"One of the pleasures of being a gardener comes from the enjoyment you get looking at other people's yards”
― Thalassa Cruso
Name: Carol
Santa Ana,Ca. (Zone 10b)
Sunset zone 22
Charter ATP Member Hummingbirder Lover of wildlife (Black bear badge) Orchids Region: California Plant Identifier
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ctcarol
Aug 16, 2015 6:09 PM CST
Cut it as low as possible...then promptly pour either Roundup (concentrate) or brush killer on the fresh cut so it gets absorbed into the root.
Name: Catmint/Robin
Maryland (Zone 7a)
Region: Mid-Atlantic Butterflies Forum moderator Native Plants and Wildflowers Bee Lover Echinacea
Region: Maryland Garden Photography Cottage Gardener Garden Ideas: Master Level Celebrating Gardening: 2015 The WITWIT Badge
Image
Catmint20906
Aug 16, 2015 6:30 PM CST
Thanks, Carol!
"One of the pleasures of being a gardener comes from the enjoyment you get looking at other people's yards”
― Thalassa Cruso

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