Flax Seeds | Linum perenne & Linum usitatissimum | Blue Flowering Perennial | Linseed Oil & Fiber Crop | Alsi

Flax Seeds – Linum perenne | Linum usitatissimum | Blue Flowering Herb | Linseed | Alsi | One of the World’s Oldest Cultivated Plants

Flax is one of the oldest cultivated plants in human history — grown since the earliest recorded civilizations for food, fiber, medicine, and oil. This listing covers both the ornamental perennial blue flax (Linum perenne / L. lewisii) prized by gardeners for its delicate sky-blue flowers and graceful form, and the common flax / linseed (Linum usitatissimum) cultivated for its highly nutritious seeds (known as alsi in South Asian cuisine), cold-pressed linseed oil, and bast fiber. Blue flax is the national flower of Belarus. Approximately 6,000 seeds per ounce. Open-pollinated, non-GMO.

Variety Details

• Ornamental / Garden Flax: Linum perenne (perennial blue flax) & L. lewisii (Lewis flax, native to North America) — sky-blue flowers, airy stems, 18–24 inches tall; perennial in Zones 5–9
• Food / Fiber Crop: Linum usitatissimum (common flax, linseed) — blue or white flowers; seeds used for nutrition, oil, and fiber; annual
• Seeds per oz: ~6,000 | per 1/4 lb: ~24,000
• Flower: Delicate sky-blue (ornamental); pale blue to white (food crop)
• Height: 18–24 inches
• Season: Cool season; sow in early spring or fall
• Sun: Full sun
• Soil: Well-drained, sandy to loamy; tolerates lean soil; does not tolerate waterlogged conditions
• Germination: 7–14 days; lightly rake seeds into surface, ¼ inch deep or less
• USDA Zones: 5–9 (perennial flax); annual in all zones for food/fiber types

A Remarkable Ethnobotanical History

Flax (Linum usitatissimum) is among the first plants domesticated by humans, with archaeological evidence of cultivation dating to 30,000 years ago in Georgia (the country) and organized fiber production in ancient Egypt. Linen — woven from flax fiber — clothed pharaohs and wrapped mummies. Cold-pressed linseed oil was used by Renaissance painters including Rembrandt and Van Eyck as a binder for oil paint. In South Asia, flax seeds are known as alsi and have been used in traditional Ayurvedic medicine for centuries. Common flax production in the United States declined sharply following the invention of the cotton gin. Blue flax (Linum perenne / L. lewisii) is the national flower of Belarus and a native wildflower across the western United States.

Nutritional & Culinary Uses (Linum usitatissimum — food/linseed type)

• Nutritional profile: Flaxseeds are one of the richest plant sources of omega-3 fatty acids (ALA), soluble and insoluble fiber, and lignans — powerful antioxidant plant compounds. One tablespoon provides meaningful amounts of protein, fiber, magnesium, and manganese
• Ground flaxseed (flax meal): Grind in a coffee grinder and add to smoothies, oatmeal, yogurt, and baked goods for a fiber and omega-3 boost. Whole seeds pass through largely undigested — grind for maximum nutritional benefit
• Flax egg — 1 tablespoon ground flaxseed + 3 tablespoons water, rested 5 minutes; a vegan egg substitute in baking (cookies, pancakes, quick breads)
• Added to bread dough, granola, energy bars, and overnight oats
• Flaxseed tea (alsi chai) — simmered in water with ginger and honey; a traditional South Asian and Middle Eastern digestive remedy
• Linseed oil (food grade): Cold-pressed and used as a finishing oil over salads, vegetables, and grains in German and Eastern European cuisine — not suitable for high-heat cooking
• Alsi ki patti / alsi ladoo — traditional Indian preparations using roasted flaxseeds with jaggery and spices

Garden & Ornamental Uses (Linum perenne / L. lewisii)

• Sky-blue flowers on airy, waving stems create a naturalistic meadow effect in borders and cutting gardens
• Excellent in wildflower meadow mixes, prairie plantings, and cottage garden borders
• Naturalizes readily by self-seeding — a low-maintenance perennial that spreads gently over time
• Deer resistant; tolerates poor, dry soil and partial drought
• Attractive to bees and beneficial insects during bloom period

Planting Guide

• Sowing: Direct sow is strongly preferred — flax has a taproot and does not transplant well. Lightly rake seeds into well-drained, prepared soil to a depth of ¼ inch or less. Do not bury deeply.
• Timing: Sow in early spring (4–6 weeks before last frost) or in fall for spring emergence. Flax germinates best in cool soil (45–65°F).
• Soil preparation: Prepare with compost for food/fiber crops. For ornamental use, lean soil is fine — overly rich soil produces lush foliage at the expense of flowers.
• Agronomic planting rate: For large-scale plantings, use a drill at a depth of 1 inch or less; recommended at 45 lbs per acre or 1–2 lbs per 1,000 sq ft. 1 oz covers approximately 100 sq ft for garden density.
• Watering: Keep soil moist until germination. Once established, flax is quite drought tolerant — water during dry spells but avoid waterlogging.

Harvesting (Food/Fiber Crop)

• Harvest when seed capsules turn brown and dry on the plant. Do not wait for capsules to open and scatter seed.
• Cut stems, bundle, and hang upside down to finish drying in a well-ventilated space.
• Thresh by rubbing bundles over a clean surface or placing in a pillowcase and working by hand. Winnow to remove chaff.
• Store seeds in an airtight container in a cool, dry location. Ground flaxseed should be refrigerated and used within 3–6 months as the oils oxidize quickly.