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Linum

Linum perenne var. lewisii
Also known as: Blue Flax

Linum is a flower in the Linaceae family. It grows best in full sun to part shade with medium moisture, and is listed for USDA zones 4-9. Plants reach maturity about 60–90 days after planting and sit about 12 inches apart.

Varieties

1 from True Leaf Market · sorted by days to maturity
  • Blue Flax60–90 days

    Non-GMO; Container; Perennial

    60-90 Days to maturity. Linum perenne var. lewisii. Linum Blue Flax Seeds. Non-GMO, Perennial. Blue Flax Linum seeds grow one of the most classic and familiar blooms native to the western United States. Blue Flax Linums are vigorous outdoor favorites for growing adaptable, yet brilliant seasonal color ideal for accenting any flower bed, porch, patio, or planter. Blue Flax seeds promise hardy sky blue and lavender Linum shrubs and are most popularly grown and treated as a wildflower. Blue Flax Linum is easy to grow from seed and is known to thrive in a variety of gardens prone to drought and poor soil across the country. ~42,000 seeds/oz.

    View on True Leaf Market
Family
Linaceae
Category
Flower
Form
Stalk
Lifecycle
perennial
Zone
4-9
Height
1–2 ft
Spread
1–1.5 ft
Sun
Full sun to part shade

Plant spacing

1 plant per square footSquare-foot planting diagram: one linum fills a 1-foot square, spaced 12 inches from its neighbors.
1 plant per square foot

In a square-foot bed, space linum about 12 in apart — that fits 1 plant in each 1-foot square (1×1). Wider rows or containers space the same.

Water
Medium

Plan your linum planting

Add linum to a free GardenDraft plan and get sow, transplant, and harvest dates computed for your ZIP code — with a drag-and-drop bed layout and reminders when it’s time to plant.

Start your free plan →

At a glance

Days to harvest
60–90 days
From transplant or sow to first harvest
Harvest style
Keep picking
Crops over several weeks
Frost tolerance
Hardy · to ~20°F
Lowest temperature the foliage usually survives

Growing timeline

When to plant and harvest linumPlanting timeline for linum, relative to last frost: start indoors from 8 weeks before last frost to 2 weeks before last frost; grow from 2 weeks before last frost to 7 weeks after last frost; harvest from 7 weeks after last frost to 11 weeks after last frost.Start indoorsGrowHarvestLast frostTransplant
Start linum indoors ~6 weeks before transplanting 2 weeks before last frost; first harvest 7 weeks after last frost.
Seed to transplant
28-42 days
Outdoor planting
-14 to 0 days vs frost
Propagation
Seed
Schedule anchor
Last Frost

Care & troubleshooting

No curated care & troubleshooting advice for linum yet. Our extension-sourced library currently focuses on common edible crops; we're expanding it over time.