Rose of Sharon, Shrub Althea 'Blue Satin'

Hibiscus syriacus

Family: Malvaceae (mal-VAY-see-ee) (Info)
Genus: Hibiscus (hi-BIS-kus) (Info)
Species: syriacus (seer-ee-AK-us) (Info)
Cultivar: Blue Satin
Additional cultivar information:(PP12680; Satin series, aka Marina, Satin Blue)
Hybridized by Verweij
Registered or introduced: 2002
» View all varieties of Hibiscus


8-10 ft. (2.4-3 m)


4-6 ft. (1.2-1.8 m)


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

Bloom Color:


Bloom Time:

Mid Summer

Late Summer/Early Fall



Other details:

Unknown - Tell us

Soil pH requirements:

5.6 to 6.0 (acidic)

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

Patent Information:


Propagation Methods:

From softwood cuttings

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

Direct sow as soon as the ground can be worked

From seed; sow indoors before last frost

From seed; direct sow after last frost

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Water Requirements:

Unknown - Tell us

Where to Grow:

Unknown - Tell us


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

Pelham, Alabama

Huntington Beach, California

Los Angeles, California (2 reports)

Stockton, California

Waterbury, Connecticut

Wilmington, Delaware

Clermont, Florida

Eustis, Florida

Miami, Florida

Panama City, Florida

Richmond Hill, Georgia

Downers Grove, Illinois

Roscoe, Illinois

Florence, Mississippi

Saucier, Mississippi

Jefferson City, Missouri (2 reports)

Kearney, Nebraska

Lincoln, Nebraska

Vineland, New Jersey

Constable, New York

Ogdensburg, New York

Chapel Hill, North Carolina

Kernersville, North Carolina

Cleveland, Ohio

Coshocton, Ohio

Hulbert, Oklahoma

Bellefonte, Pennsylvania

Germansville, Pennsylvania

Harrison Valley, Pennsylvania

Jim Thorpe, Pennsylvania

North Augusta, South Carolina

Pleasant View, Tennessee

Austin, Texas

Houston, Texas

La Porte, Texas

Rowlett, Texas

San Antonio, Texas

Orem, Utah

show all

Gardeners' Notes:


On May 13, 2019, bptaylor from Westover Hills, TX wrote:

I planted two of these about 5 years ago. They haven't gotten as tall as I expected, topping out so far at about 6 feet the past three seasons. In the first season, one of them had an echinacea in front of it, about two feet. It was enough shade to really stunt that one, although it got full sun most of the day. I removed anything in front of that one, and it has caught up in height, but is a little thinner. I was hoping to get some shade from them on a bed behind them, after losing a tree. They haven't gotten tall enough to really do that. They're very pretty in bloom, so I'm keeping them.


On May 13, 2019, vanessasgram from Germansville, PA wrote:

I planted one tree (bush) (that's ONE--1) and now have them coming up all over my yard and they are weeds taking over. Once they get themselves established-they are hard to rid yourself of these plants!
BE careful what you wish for!


On Jun 17, 2017, WolfSpirit from Mingo Junction, OH wrote:

This plant is growing next to a Blush Satin and it is really hard to choose a favorite. It flopped over last year but I left it to bloom then trimmed it down, and this year it is slowly filling up again. These Rose of Sharon's really lend an exotic jungle look to the garden which is what I am going for. At their feet grows a good variety of native plants that also add to that Jurassic Park feel.


On Jun 5, 2016, mnemier from Huntington Beach, CA wrote:

Bought Azuri Blue Satin directly from Proven Winners for my Southern Ca. garden last year, even though they are deciduous and not quite recomended for our zone: I had a neighbor who had Blue Bird, Hybiscus Syriacus in my old neighborhood that was quite a lovely tree, and did well year after year. I figured it might do ok here, since I had an example of a similar cultivar flourishing. I do have "Blue Bird" in pots, since they have a tendancy to be invasive. I planted the Azurri Blue Satin in the ground, they have lots of flowers here early June, but are still quite short plants. I know they can get quite tall but I'm finding little information on how long they take to reach maturity. I would love to know how long it takes for this cultivar to reach maturity. My neighbor has a rose of shar... read more


On Mar 19, 2013, derbeh from Los Angeles, CA (Zone 10a) wrote:

i've had my plant now for more than six years. i had to prune it back a LOT last month, as i was moving the plant from one location to another. i put all of the cuttings into a pot with soil and every one is sprouting. i'm looking forward to this plant blooming again this year. it's always a conversation piece among our gardeners.


On Apr 6, 2012, garyloveslucy from Jefferson City, MO wrote:

The BEST of the Rose of Sharons. Easy to grow, not invasive, does not set much seed (if so, pull them up as they don't come true from seed), drought tolerant, clay tolerant, and the most beautiful flowers on top of all of that. THE BEST!


On Jun 9, 2011, Bazuhi from Downers Grove, IL (Zone 5a) wrote:

My sister ordered actual plants back in 2008 from Blue Stone Perennials and I ended up with small plants from the seeds dropping from the parent plant. The actual flower from the seed looks just like the parent plant and I am quite pleased with this plant . I have 5 of them and keep them very short in a flower bed so that they look less like a bush... In the fall I trim the bush 2-3 inches down to the ground and then in the spring once it starts to really grow I trim leaving a few branches have a clean look and this does not affect flowering at all...


On Aug 24, 2009, BellefonteJen from Bellefonte, PA (Zone 5b) wrote:

Very pretty blue color. I planted this two years ago, along with several pink varieties. The pink ones have grown much faster and are over 4 feet tall, while the blue is still under three feet tall. I may try to move it somewhere else in the garden. It looks kind of silly next to its taller brethren.


On Aug 2, 2009, mikesmets from Waterbury, CT wrote:

Bought this plant in the fall of 2007 from Park Seed. Looked like a dead 6-inch stick in a small pot when shipped. Had a bunch of blooms in the summer of 2008 even though the plant was less than 2 feet tall. Now, the summer of 2009, it is about 3 feet tall and covered in blossoms. Great plant.


On Aug 11, 2008, donicaben from Ogdensburg, NY wrote:

Bought one this summer. It's not even two feet tall and is coverred in flowers/flowerbuds! Absolutely beautiful.

Looks a little silly though, being so small with such huge flowers on it! :-)


On Dec 19, 2007, passiflora_pink from Central, AL (Zone 8a) wrote:

Blooms formed on mine the first year, although it was only about 18 inches tall. Survived record drought and 100 degree heat (though it had afternoon shade).


On Mar 1, 2007, Kiweed from Saratoga Springs, UT (Zone 8a) wrote:

I bought this mail order, and moved shortly after, but was there long enough to see it put out an absolutely stunning flower...WOW! Surpassed all my expectations in flower color for a Rose of Sharon. My favorite variety yet. The pictures don't fully capture it. Beautiful mix of blue with hints of purple, and intense red eye, are captivating.


On Jul 5, 2006, PudgyMudpies from Stockton, CA (Zone 9a) wrote:

Got this last Fall and it was a small dormant stick, I did not expect to get any flowers for a few years. I had a small start of ROS Aphrodite that I planted snugged up against Blue Satin so they would grow as one. Blue Satin started leafing out this Spring and has bloomed like crazy at a foot tall! It opens a deep blue and then lightens through the day to a light blue/lavender. I posted a morning picture of the dark blue flower and then a picture from later in the day of the overall plant to show the color change. I can hardly wait to see the rose colored Aphrodite blooming along with the Blue Satin. I would highly recommend the Blue Satin if you want a true blue flower.


On Apr 17, 2006, crowellli from Houston, TX (Zone 9a) wrote:

All my altheas do well here in Houston, but I had to find room for this new blue one. I'm disappointed in the color, as here in our heat it's more of a lavender color and not the clear blue I'd seen advertised. Still a good summer bloomer though.