General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Dry Mesic
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 9b
Plant Height: 18-24 inches
Plant Spread: 12-16 inches
Flowers: Showy
Flower Color: Blue
Bloom Size: 1"-2"
Flower Time: Late spring or early summer
Late summer or early fall
Uses: Medicinal Herb
Resistances: Drought tolerant
Propagation: Seeds: Depth to plant seed: cover the seeds thin
Suitable for wintersowing
Sow in situ
Start indoors
Can handle transplanting
Pollinators: Flies
Containers: Suitable in 3 gallon or larger

Common names
  • Blue Flax
  • Perennial Flax

This plant is tagged in:
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  • Posted by BookerC1 (Mackinaw, IL - Zone 5a) on Nov 8, 2011 6:25 PM concerning plant:
    I grow flax at the base of my clematis trellis, to provide shade for the clematis roots. It blooms prolifically, and reblooms repeatedly if I deadhead it. The foliage is lacy and attractive, and the seeds are easy to harvest. I suggest putting a cup or bowl beneath the seed pods and clipping off the stems, as the paper pods tend to shatter at the lightest touch. Good candidate for winter sowing and direct seeding.
  • Posted by Zencat (West Valley City, Utah - Zone 7a) on May 14, 2013 8:47 AM concerning plant:
    My clump gets bigger every year.
Plant Events from our members
piksihk On March 8, 2019 Seeds sown
piksihk On January 9, 2019 Seeds sown
WG front beds
piksihk On March 16, 2017 Seeds sown
2009 seeds
KelliW On March 8, 2019 Seeds sown
#49, winter sown
dnrevel On April 11, 2022 Seeds germinated
Growing in paper pots. In May, still very small plants.
dnrevel On April 11, 2022 Transplanted
Neglected this plant, but transplanted it into a larger pot and then into the new front gardens. In 2022, in April, it started growing well again as a two year old plant. In May it is doing very well. Hoping to get more seed grown starts growing by June.
dnrevel On February 26, 2022 Seeds sown
In paper pots, lasagna pan tray, Winter Sown
dnrevel On March 27, 2021 Seeds sown
W / Spring sowed in a pot, will place in cold frame in a few days.
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