Linum Species, Flowering Flax, Red Flax, Scarlet Flax

Linum grandiflorum

Family: Linaceae
Genus: Linum (LIN-um) (Info)
Species: grandiflorum (gran-dih-FLOR-um) (Info)
Additional cultivar information:(aka Rubrum)
Synonym:Adenolinum grandiflorum



Water Requirements:

Average Water Needs; Water regularly; do not overwater

Sun Exposure:

Full Sun



Foliage Color:

Unknown - Tell us


12-18 in. (30-45 cm)


6-9 in. (15-22 cm)


Not Applicable

Where to Grow:

Unknown - Tell us


Unknown - Tell us

Bloom Color:


Bloom Characteristics:

Unknown - Tell us

Bloom Size:

Unknown - Tell us

Bloom Time:

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall

Mid Fall

Late Fall/Early Winter

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)

7.6 to 7.8 (mildly alkaline)

7.9 to 8.5 (alkaline)

Patent Information:


Propagation Methods:

From seed; direct sow outdoors in fall

From seed; direct sow after last frost

Seed Collecting:

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


This plant is said to grow outdoors in the following regions:

Phoenix, Arizona(3 reports)

Canoga Park, California

Manhattan Beach, California

Menifee, California

Sacramento, California

Simi Valley, California

South Yuba City, California

Stockton, California

Tierra Buena, California

Denver, Colorado

Itasca, Illinois

Mahomet, Illinois

New Orleans, Louisiana(2 reports)

Berwick, Maine

Blair, Nebraska

Elizabeth City, North Carolina

Portland, Oregon

Greeley, Pennsylvania

Lititz, Pennsylvania

Columbia, South Carolina

Austin, Texas

Bulverde, Texas

Dripping Springs, Texas

Liberty Hill, Texas

San Antonio, Texas

Chewelah, Washington

Kalama, Washington

Spokane, Washington

Delavan, Wisconsin

Pewaukee, Wisconsin

show all

Gardeners' Notes:


On Mar 28, 2016, arries from Stockton, CA (Zone 9a) wrote:

I've transplanted these around the yard this year, and have given several away. Many have their first blooms. Will see how they do for the season. I don't put any support for them because they will lay down and grow side shoots to become a thicker bush, during it's growing season. I've had one that grew a second year (biennial). The first year growth had grown to medium size bush, and I trimmed it down to the bottom leaving some good size stems. The following year it grew new shoots to become a much larger bush with thick woody stems at the bottom. I had several other seedlings that grew that same year, but they didn't grow a second season. They are drought tolerant, but they will grow more vigorous with more water, in my area.


On Aug 6, 2015, Euphonia from Celaya,
Mexico wrote:

This is my first experience with Scarlet Flax. I planted directly into ground, in horribly alkaline soil. About half came up. Next time I'll dig out the hard-as-a-rock clay soil and replace with good soil. Blooming nicely, in intense full sun all day, with temps occasionally reaching 40 C. I water early every morning. The flowers are an incredible blue-red. Plants are a little on the scraggly side but probably this is due to the crappy soil.


On Mar 21, 2011, abken from New Orleans, LA wrote:

Lessez faire gardener that I am, I mixed all the flower seed packets I had and tossed them in the garden without any plan. These were among the first to bloom. Had to look at the empty packets to ID them. A happy surprise. l Love the look. Hope they reseed.


On Jul 13, 2010, lehua_mc from Portland, OR (Zone 8b) wrote:

Winner thumbs up celebrate! I tossed these seeds into the garden as a footnote to my larger plans, and then the weather nixed those plans. What came up though in that cold wet spring was the Scarlet Flax, and what has been unbowed now that we are spiking into the high 90's. Color is totally fluorescent, a sort of blue red that knocks my socks off. I would pair this with dark foliage, like a smoke bush or similarly bright 1' high flowers, maybe California poppies. Sowed in mid April, wispy foliage through the spring, flowering in mid July.


On Sep 5, 2009, disberg from New Westminster,
Canada wrote:

Hi Everyone.

I live in New Westminster, BC, Canada.

This plant came to me as a gift in a package of wild flower seeds. I just planted it in a balcony rail planter with some of the other seeds in Mid April. It came up in about 3-4 weeks and was in full bloom in June. It gets the southern exposure so full sun.

Actually thinking back, I did transplant them, but I had sorted the seeds and planted 4 of the same seed in 3" pots. I separated the plants when transplanting into the rail balcony planter. I didn't know they prefer sandy soil and they are growing in "Miracle Grow" soil - 18.0.10

They are still blooming and their blossoms became more prevalent as the plant ages. We are in a zone 9/10 depending what book you read, so ma... read more


On Jun 22, 2009, woofie from Chewelah, WA (Zone 5a) wrote:

I love this plant! The flowers seem almost fluorescent. And they are simply stunning mixed in with larkspur and cosmos. Mine grew fairly tall, about 18", but I've never had to stake them. A couple of posters have mentioned that they don't transplant well. I suppose it depends on how you define "transplant." I start mine in the greenhouse in little 4-packs, then move them into 3" pots before planting in the garden and have never had a problem. I've never tried moving them after they were established, tho.


On Sep 27, 2008, tcs1366 from Leesburg, FL (Zone 9b) wrote:

I found these growing in my garden, so they must have come in a 'wild flower mix' that I sort of tossed about in May or June.

Cute little red flowers that brighten the flower bed. Them seem delicate, but i do not need to stake them.

Goes nicely with Bachelor Buttons and Coreopsis.

Seeds easy to gather. Wait until seed pod is completely dry.


On Mar 10, 2007, stephanotis from Queen Creek, AZ (Zone 8b) wrote:

I'm putting a neutral on this so far because I planted 1500 seeds in Fall, according to directions, and only have one tall stalk to show for it. There are a few tiny stragglers too; about 15 or so. The tall stalk is growing at the base of a large bearded iris, and is in mostly shade all day. It does have lots of buds on it, and I'm excited for it to bloom. The stragglers are in full sun, and didn't spring up as tall or as quickly. The one stalk doesn't seem to need any support yet, and it is almost 10" tall. I will post photos as soon as the buds open. I will be experimenting later with planting the remainder of the seeds in different areas to see if I have better luck. Who knows, maybe the rest will sprout as the weather remains warm.

Update: 3/08, I planted more this year,... read more


On Feb 15, 2007, Fleurs from Columbia, SC wrote:

Scarlet Flax grows easily from winter sowed seeds. I've found the color to be rose-red. Just lovely with old fashioned roses.


On Sep 10, 2005, htop from San Antonio, TX (Zone 8b) wrote:

Scarlet flax is a wildflower that is indigenous to North Africa and Southern Europe, but has become naturalized in other desert areas. It can be grown successfully in all regions in the United States in Zones 3 -10 and has escaped cultivation in some areas becoming a naturalized plant. Scarlet flax perfers loose sandy soils; however, it is highly adaptable to other types of soils as well as long as the soil is fast draining. It is drought tolerant and can be grown in full sun or light shade (blooms better in full sun). The cup-shaped, satiny sheened blooms are a brilliant velvety red and the petals are sometimes outlined in black and appear on long stalks. It reseeds itself and is easily started from seed. Plant the seeds in the fall or spring in the desired location. The plants do not... read more


On Jul 19, 2003, Shelly221 from Denver, CO (Zone 5b) wrote:

Scarlet flax grows great here. No need for support. Grows from 5-8 inches, in full sun, and partial shade.


On Feb 2, 2003, Crimson from Clarksville, TN (Zone 6b) wrote:

Floppy stems! Needs support. Flowers last a day, blooms multiple flowers on each stem.... flowers endlessly. Drops petals everywhere, you'll end up with a "carpet" of red petals... but they're pretty! Reeseeds freely, doen't transplant well.