Category: Alpines and Rock Gardens Groundcovers Perennials
Height: under 6 in. (15 cm)
Spacing: 18-24 in. (45-60 cm)
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) USDA Zone 10a: to -1.1 °C (30 °F) USDA Zone 10b: to 1.7 °C (35 °F)
Sun Exposure: Full Sun Sun to Partial Shade Light Shade
Danger: All parts of plant are poisonous if ingested Handling plant may cause skin irritation or allergic reaction
Bloom Color: Light Blue Medium Blue White/Near White
Bloom Time: Mid Spring Late Spring/Early Summer Mid Summer Late Summer/Early Fall Mid Fall Late Fall/Early Winter Blooms repeatedly
Foliage: Grown for foliage Evergreen Smooth-Textured
Other details: 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: By dividing the rootball
Seed Collecting: Allow pods to dry on plant; break open to collect seeds
My wife bought several containers of this plant and I helped plant it in our planting beds. Oh am I sorry! After getting established, it begins to spread underground and pops up in various spots beyond where it was planted. It will invade neighboring plants and smother them. It will invade your lawn too. In that case you will need to dig out the sod and start that section of your lawn over. If it invades your neighbor's lawn you could be in trouble. You might try planting it in a deep pot that is sunk in the ground, but I haven't tried that yet (too busy controlling this invasive beast).
On May 5, 2011, sunnyg from San Francisco Bay Area, CA (Zone 9b) wrote:
Oh, how I wish I'd never planted this cute little thug. I've been trying to eradicate it from my small garden for several years, and I have a feeling my battle will continue for quite some time. It spreads very quickly, and is nearly impossible to completely remove from an area due to all the tiny roots spread out everywhere. It not only thrives in my amended soil, it has also happily taken over the unamended heavy clay soil.
Planted this in full sun back in April. For about 2 months it didn't appear to grow at all. Then in mid June it started to get bushy (for its size) and now all of a sudden is sending out a bunch of creepers (both above and below the soil).
Also, it appears to be very sensitive when first transplanted, as some of the clumps died off completely (and rapidly) while others thrived under the same conditions.
On Apr 20, 2010, PurKat from Oklahoma City, OK wrote:
I live in Oklahoma, and my backyard is 90 percent variegated shade, with no grass, however one third is covered in English Ivy. I have many Hosta Plants in my flowerbeds and in large pots under my two shade trees. Depending on the time of day, I might get a few hours of hot sun, on any part of my backyard, and the rest of the time, it is shaded by my trees. I do not want to put in shade grass, so I was looking for a low, 2 to 3 inch, ground coverage. I found this Blue Star Creeper at Lowes Garden Center yesterday, so today I planted six of the four inch pots, to begin lining my decor brick pathway, from my patio to my Hosta Garden, in-between the two huge trees. I sure hope it takes off, like a few have complained about. On the plastic plant identifier insert, is calls this Blue Star Creeper by the name of Isotoma Fluviatus. This may need to be added to the Synonym Names.
On Sep 11, 2008, blumz from Trussville, AL (Zone 8a) wrote:
I moved into my brand new home this past fall and was anxious to establish my new gardens. I brought many perennials from my previous home. This past spring I purchased an entire flat of BSC and planted it in several different places. Have sung it's praises all summer, as it has bloomed for me practically the whole time. HOWEVER, I'm no longer singing it's praises. It is a THUG in my garden and is now threatening our expensive Zoysia Z52 lawn. Because it has surrounded all of my lovely perennials in two different beds - hosta, hydrangeas, salvias, daylilies, veronica ... I can't spray it and even if I lift all of the valued plants and wash off the soil before replanting, I'm afraid it won't help. I had planted 2 or 3 little plugs of it in one area in the spring and decided to move them a couple weeks later. Not only is it rambling in the place were I moved it, it has also come back in the place where I originally had it, and I thought I had cleared out all of the tiny rootlets, etc. I have begun digging it out of the most threatened areas and have found the roots to be spreading happily deep underground.
I've been gardening 25 years and am disappointed that I didn't check out this beautiful plant a little further before planting it. You'd think I would have learned by now!
On Sep 8, 2008, gardennut10 from Bellevue, WA wrote:
I have had this plant for about 4 years. It took a few years to fill in among my perennials. It is very pretty when it blooms, and between bloom times it forms a good mat that keeps most, but not all weeds out.
I have just found out that this year, it has become down right invasive! I use several ground covers in my flower beds, and the blue star creeper does not only invade all the perennials, it also overtakes Irish Moss and Red Thyme, which I am not appreciating. Now I am pulling it out in a wide margin from around all other plants. I also use lots of containers for my plants, and it has gotten into those too. It has coexisted with violets in a 12" bowl, and with unicorn rush in a large terracotta pot without doing any harm as far as I can tell, and does look nice that way.
On Jun 21, 2007, Michelle_Ta from Portland, OR (Zone 8a) wrote:
I am having trouble getting this plant to grow in a well established and well drained area. The area gets afternoon sun and partial shade but the plants have not grown much since I planted them several weeks ago. Does anyone have any suggestions? Do I need to move them to an area with more sun? Please respond to email@example.com with any ideas. I am very sad :( I really want this to grow. A yard that I care for is full of this and it is extremely beautiful.
On Jan 30, 2006, Kiweed from Saratoga Springs, UT (Zone 8a) wrote:
One of my favorite plants; Did well in clay alkaline soil known to Utah on the north-west side of the house (comparable to "light shade", as sun is intense here).
Has anyone else noticed that once it establishes itself it looks like a completely DIFFERENT plant? The flowers change from star to upward facing bell shape, with a different number of petals (I'm not an expert at recognizing "true" petals, so I might be wrong), are a more intense color (**stunning deeply saturated blue**) , and the foliage looks more coarse. The young plant is more delicate looking, the older plant more showy. At first I didn't believe it was the same plant, but I have observed this phenomenon repeatedly. Along the edges of a mature clump you will get new starts that look like the young plants. The mature plant is completely covered (no foilage showing) when in bloom. (STUNNING!) The pictures posted here are all of the young plant, which is pretty, but not stunning like the mature plant.
I just noticed that it is in the Campanulaceae family. I have thought before that the flowers on the older plant resemble "Blue Chips" campanula.
You're probablly skeptical; I was too and have been watching this plant carefully to figure out this unusual behavior. My mother-in-law has had the same experience with the plant and when we questioned the owner of the nursery from which we bought it (Cook's) she said it is one of her favorite plants and she is quite familiar with its change in appearance. Both my mother in law and I are in new houses now, and planted starts last fall. Right now they look identical to the pictures posted here. If these also undergo the change I will provide pictures.
I am very curious and hope someone with more scientific knowledge of plants might help shed light on this phenomenon.
On Sep 19, 2005, docturf from Conway, SC (Zone 8b) wrote:
As a retired plant pathologist/horticulturist, I noted with interest that several persons had commented that Blue Star Creeper was subject to a particular disease problem. Unless I miss my guess, this could be Southern Blight, a soil-borne fungal pathogen (Sclerotrium rolfsii). It is favored by hot, wet weather and acidic soils. It develops rapidly, usually attacking the stem at the soil lineand creating a dark-colored lesion at that point. As it develops, a whitish web of mycelia forms around the stem and nearby soil. Finally, small, white or gray resting bodies (sclerotia) are formed and these turn brown and resemble mustard seeds. A degree of control may be had by applying certain soil fungicides. These include: Heritage (azoxystrobin); Daconil (chloroneb); Prostar (flutanil); or Scotts Proturf Fungicide 7 (tridimefon). If you don't (or won't) use fungicides, try to avoid hot, wet sites and add/or a little lime to raise the soil pH. GOOD LUCK!! docturf
On Sep 18, 2005, LinnieBeth from Conyers, GA wrote:
After a year of minimal growth- it began to spread and WOW it has really taken off. I have it on a slope that is partly to mainly shady. It's blooms are 'cute" and I find that it makes plenty to enjoy in partly shade.
This years I have just snatched portions of it and transplanted them to other areas by making a little muddy area and pressing the pieces into it. The new sections are doing very well.
I read comments that said it might succomb to a wilting soil borne disease- I have not had a problem with this in my Blue Creeper, but did have a bout of it in my Ajuca- I drenched the soil with a copper solution, what few plants remained have made quite a comeback.
On Dec 31, 2004, ACHunter47 from Elmore, AL (Zone 8a) wrote:
I bought a small 2 inch container of this two years ago. I split it up into four pieces and planted in an area that is 3 x 12 foot, in which I have planted about 50 field lilies. It has almost covered the whole area and is even growing into the grass. Since the area doesn't get too much sun, it doesn't seem to bloom a lot but it still blooms and is a very good groundcover. When the lilies come up in the early summer, the blue star is growing underneath them. Beautiful!
On Oct 10, 2004, RDT from Crossville, TN (Zone 6b) wrote:
I have planted this creeper in all locations. Thrives best in full sun. In full shade it seldom blooms. The only problem was after I watered it in the shady area during the summer. It sat in the water for too long. It developed white cottony mass in the roots. I too used fungicide to no avail. It kept spreading. I pulled it up and although I thought I lost it it has come back to cover the area completely. I have noticed that it is going into the grass nonstop with its blooms aglowing. I love it. It is mid October and it is still blooming.
On Sep 11, 2004, pokerboy from Canberra Australia (Zone 8b) wrote:
A hardy groundcover from Australia. This plant produces blue star shaped flowers from early spring through to mid autumn. Likes a cool climate in damp, poorly drained soils. Likes full sun but protection from the hot midday sun. Water well during dry, hot weather. Good lawn substitute. Great for filling between pavers, rocks and driveways. pokerboy.
On Jul 15, 2004, CherylBerry from Marietta, GA wrote:
I've used blue star creeper in the Atlanta GA area for years with great success as a filler between a rock pathway. This year (2004), we are experiencing some type of disease or 'melting' problem. The plant can be flourishing and then suddenly show signs of die out. This began about May and has continued through July.
What ever this is has not caused total loss of the plant, as it is appears here and there. I do remove the dead/diseased areas but it has continued to spread. I have also tried treating with a mild fungicide to no avail. I too would like to information on what might cause this.
I have used Blue Star Creeper or Laurentia Fluviatilis with great success for several years. Recently I was told it was susceptible to a soil-born disease that causes it to die off shortly after spring emergence. I have searched for information about this possible disease but can find nothing, has anyone else encountered this? With one exception, every place and every time I have used this plant it has flourished and performed beautifully. I have found that it blooms better and longer in full sun, although grows prolifically in mild shade but with fewer blooms. Am interested in talking to anyone about this plant.
On May 10, 2004, PV_Gardner from Prescott Valley, AZ wrote:
Don't buy it at Home Depot (or anything else, for that matter). It was full of weeds and Dichondria, which eventually took over and killed the Creeper.
This plant has been said to grow in the following regions:
, Argo, Alabama Elmore, Alabama Grayson Valley, Alabama Castro Valley, California Cool, California Hayward, California Merced, California Salinas, California San Jose, California Stockton, California Sunnyvale, California Tustin, California Clifton, Colorado De Land, Florida Pembroke Pines, Florida Plant City, Florida Conyers, Georgia Cordele, Georgia Kennesaw, Georgia North Decatur, Georgia Stone Mountain, Georgia Cherry Valley, Illinois Parkway Village, Kentucky Reno, Nevada Chapel Hill, North Carolina Charlotte, North Carolina Raleigh, North Carolina Cleveland, Ohio Coshocton, Ohio North Ridgeville, Ohio Williamsburg, Ohio Oklahoma City, Oklahoma Ashland, Oregon Coburg, Oregon Durham, Oregon South Beach, Oregon Albion, Pennsylvania Crossville, Tennessee Orem, Utah Newport News, Virginia Cathan, Washington Eastgate, Washington Edgewood, Washington Olympia, Washington Orchards, Washington