Linum Growing Guide
Linum is a great next step in your growing journey. Follow this guide from planting to harvest and you'll do great.
At a Glance
Difficulty
Moderate
Category
Flower
Sun Exposure
Full Sun, Partial Sun
Frost Tolerance
Frost Hardy
Growing Zones
Zones 3, 4, 5, 6, 7, 8
Plant Family
Linaceae
Growing Season
Cool Season
Plant Lifecycle
Annual
Also grows well as
When To Start
First Chance to Plant
30 Days Before Last Frost
Last Chance to Plant
30 Days Before First Frost
When should you plant Linum?
Your planting dates depend on where you live. Sign up to unlock dates personalized to your location.
Your Linum Planting Window
Start planting
May 15, 2026
Last chance
Sep 10, 2026
The Journey Ahead
Linum's Lifecycle
Seedling
Mature Plant
Seed Production
Step 1
Prepare Your Space
0.5 cm
Seeding Depth
10 cm
Plant Spacing
30 cm
Row Spacing
4
Plants / Sq Ft
Vertical Growing
Yes – Trellis.
Method: Trellis.
Succession Planting
Yes.
Good Companions
Bad Companions
Step 2
Planting & Sprouting
Expect sprouts in 10–14 days
Growing Tips
- 1Linum thrives in full sunlight, so plant it in a spot that gets at least 6 hours of direct sun each day.
- 2Water it moderately, allowing the soil to dry out slightly between waterings to prevent root rot.
- 3Use well-draining soil, and space plants about 6 to 12 inches apart to ensure good air circulation and reduce the risk of fungal diseases.
- 4Keep an eye out for aphids and treat them with insecticidal soap if necessary.
Seedling Phase
Step 3
Growth & Maturity
~60
Days to Maturity
60 cm
Mature Height
30 cm
Mature Width
Pests to Watch For
Diseases to Watch For
Mature Plant
Step 4
Harvesting
Harvest Window
30 days
When to Pick
Harvest seed heads when dry
How to Harvest
- 1Harvest Linum (flax) when the seed capsules turn brown and are firm to the touch, typically in late summer.
- 2Cut the stems close to the base using sharp scissors or pruning shears to avoid damaging the plant.
- 3Handle the stems gently to prevent seed loss and ensure future growth.
Step 5
Saving Seeds
How to Save Seeds
Saving seeds from your Linum plant is a simple and rewarding process that any new grower can master! Once the flowers have faded, allow the seed pods to dry on the plant until they turn brown and start to split open. Gently collect the pods, break them open, and shake out the tiny seeds. Let the seeds air dry for a few days, then store them in a labeled paper envelope or a small glass jar in a cool, dry place—this will keep them fresh for next season. With just a little care, you’ll have your own homegrown seeds ready to plant, share, or swap, making your gardening journey even more fulfilling!
Seed Production
