Photo by Melody

PlantFiles: Shrubby St. Johns Wort, Cinnamon Stick
Hypericum prolificum

Family: Clusiaceae
Genus: Hypericum (hy-PER-ee-kum) (Info)
Species: prolificum (pro-LIF-ih-kum) (Info)

Synonym:Hypericum spathulatum

5 vendors have this plant for sale.

7 members have or want this plant for trade.


12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)
4-6 ft. (1.2-1.8 m)

12-15 in. (30-38 cm)
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
36-48 in. (90-120 cm)

USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
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)

Sun Exposure:
Sun to Partial Shade

Parts of plant are poisonous if ingested

Bloom Color:
Bright Yellow

Bloom Time:
Late Spring/Early Summer
Mid Summer


Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Provides winter interest

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

Patent Information:

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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By Toxicodendron
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There are a total of 8 photos.
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7 positives
No neutrals
No negatives

Gardeners' Notes:

Positive standinntherain On Oct 1, 2009, standinntherain from Liberty, WV (Zone 6b) wrote:

The flowers of the plant are used to treat depression, anxiety, and insomnia. :) Pretty and useful!

Positive lasagnelady On May 25, 2009, lasagnelady from Memphis, TN (Zone 7b) wrote:

Well suited to the variable climate in Memphis, TN. A recommended native plant for use in West TN by the Tennessee Exotic Pest Plant Council.

Positive stumpenursery On Sep 21, 2008, stumpenursery from Florence, AL wrote:

Great plant, bees and butterflies love it. Low Maint. and drought tolerant.

Positive knolan On May 31, 2006, knolan from Sugar Land, TX (Zone 9a) wrote:

I've had mine for about 3 years and it is a beautiful shrub. It blooms for about a month and a half during the summer in full Texas sun!

Positive Toxicodendron On Jan 18, 2005, Toxicodendron from Piedmont, MO (Zone 6a) wrote:

We are fortunate to have Shrubby St. John's Wort as a native plant in our area of Southeast Missouri. It has woody stems and ranges from 2 to 5 feet tall and wide in our climate. It blooms from June to September; in sun to part shade; dry or wet soil.

This plant is a good nectar source for bees, and is attractive enough to incorporate into the landscape.

Positive neogard On Aug 15, 2004, neogard from Toronto
Canada wrote:

I have a large hypericum prolificum in my front garden. I'm just identifying it now from your picture. I haven't seen another one anywhere. It's probably been there since the house was built in 1949. It is very contained, I have other shrubs that spread much faster and further than this one. Everyone comments on how pretty the flowers are. It doesn't need much care. The soil in my area is quite sandy since I'm very close to Lake Ontario. I trimmed it back last year, but didn't have to this year (I've only been in the house 2 years). Hard to believe this is a weed.

Positive vagardener On Jul 29, 2003, vagardener from Springfield, VA wrote:

I planted two of these shrubs a couple of years ago between some azaleas to provide summer color. They are thriving in almost full sun. They did not overwinter well this year, and I thought they were lost. They came back very strongly after I severely pruned them back to the ground. They require very little maintenance, except a good haircut in the spring.


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

Florence, Alabama
Deer, Arkansas
Dyer, Arkansas
Baldwin City, Kansas
Piedmont, Missouri
Troy, Montana
Geneva, New York
Lakewood, Ohio
Stilwell, Oklahoma
Boring, Oregon
Columbia, South Carolina
Memphis, Tennessee
Sweetwater, Tennessee
Dallas, Texas
Fredericksburg, Texas
Sugar Land, Texas
Arlington, Virginia
Springfield, Virginia
Seattle, Washington (2 reports)
Liberty, West Virginia

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