Photo by Melody

PlantFiles: Rose Acacia, Bristly Locust, Moss Locust
Robinia hispida

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Family: Papilionaceae (pa-pil-ee-uh-NAY-see-ee) (Info)
Genus: Robinia (roh-BIN-ee-uh) (Info)
Species: hispida (HISS-pih-duh) (Info)

11 members have or want this plant for trade.

Category:
Shrubs

Height:
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)
6-8 ft. (1.8-2.4 m)
8-10 ft. (2.4-3 m)

Spacing:
20-30 ft. (6-9 m)

Hardiness:
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)

Sun Exposure:
Full Sun

Danger:
Seed is poisonous if ingested
Parts of plant are poisonous if ingested

Bloom Color:
Rose/Mauve
Magenta (Pink-Purple)

Bloom Time:
Late Spring/Early Summer

Foliage:
Grown for foliage
Deciduous
Smooth-Textured

Other details:
This plant is attractive to bees, butterflies and/or birds
Flowers are fragrant
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)

Patent Information:
Non-patented

Propagation Methods:
From hardwood cuttings
From seed; direct sow outdoors in fall

Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
Seed does not store well; sow as soon as possible

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to view:

By Toxicodendron
Thumbnail #1 of Robinia hispida by Toxicodendron

By Toxicodendron
Thumbnail #2 of Robinia hispida by Toxicodendron

By BUFFY690
Thumbnail #3 of Robinia hispida by BUFFY690

By Barbara44
Thumbnail #4 of Robinia hispida by Barbara44

By purplesun
Thumbnail #5 of Robinia hispida by purplesun

Profile:

2 positives
No neutrals
1 negative

Gardeners' Notes:

RatingAuthorContent
Negative Fran99 On Jun 9, 2004, Fran99 from Spartanburg, SC wrote:

This Robinia is a pest in my yard. Yes, the pink flowers are lovely but that's the only thing about it that is. It's coming up in the shrubs, the flower beds, the yard. And the thorns will hurt you. Very aggessive here in the southeast US. I try not to use chemicals in the yard but might have to with this one.

Positive mylesm On Jun 6, 2004, mylesm from Bowen Island
Canada wrote:

I have seen this plant/tree in a couple of locations around Vancouver, BC. They are trees about 30' high and 20' spread. Gorgeous when in bloom. A few years ago I walked by a house being renovated and saw the yard was starting to get dug up. In one area where the excavator had ripped up some of the soil, was what looked to be a small Rose Acacia, with a few blooms. Rather than see it plowed under, I grabbed it and tore it and a few of the smaller root attachments out and took it home to replant.
The next day, the excavator flattened every plant on the lot!
The interesting thing about these ones, is that the stems appear to be bristling with millions of vicious looking thorns. However, when touching them, they are actually quite soft. My Rose Acacias (only 2 stems survived) are now about 4 years old and this year had a dozen or so of those beautiful pinkish-purple dangling blooms. Winters here are wet/rainy and summers are very dry - months without any ground soaking rain, but these 2 Rose Acacias seem to be doing well. The soil is poor and acidic on a steep slope.

Positive Toxicodendron On Apr 25, 2004, Toxicodendron from Piedmont, MO (Zone 6a) wrote:

This plant is originally a native from Georgia, Kentucky, Virginia, and Alabama. It has been cultivated and escaped from cultivation so that now it is found practically over the whole eastern half of the United States. I got this plant from my Mother in Law many years ago. It grows into a small tree and spreads by runners. Not particularly attractive except when in bloom. If possible, locate on a hill where a path runs below it, that way you can really appreciate the blooms. It is slightly difficult to transplant because the young plants do not form their own root system while small, instead they rely on the runner from the mother plant. Best method is to sever the runner, then allow the small plant to form it's own roots...then move the plant the next year.

Regional...

This plant has been said to grow in the following regions:

Daleville, Alabama
Oakland, Arkansas
Winslow, Indiana
Mc Dowell, Kentucky
Taylorsville, Kentucky
West Monroe, Louisiana
Gladwin, Michigan
Lake, Michigan
Piedmont, Missouri
Oak Island, North Carolina
Dayton, Ohio
Kellyville, Oklahoma
Beaverton, Oregon
Spartanburg, South Carolina
Breckenridge, Texas



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