Life Cycle
Biennial
Plant Characteristics
Blue-green leaves with tall yellow flowering spikes
Growth Habit
Upright
Bloom Season
Late spring to summer
Flavour Profile
Not applicable
Suitable for
Outdoor
Seed Type
Heirloom
Plant Type
Flowering Perennial Herb
Planting Season
Spring
Fruit Size
Not applicable
Plant Height
90–120 cm
Light Requirement
Full sun
Water Needs
Low to moderate
Hardiness Zones
4–9
Container Garden
No
Plant Spacing
30–45 cm
Planting Depth
0.5–1 cm
Growing Conditions
Sunny location
Frequently Asked Questions
Woad Seeds What is Isatis tinctoria commonly called?
Woad Seeds What is Isatis tinctoria commonly called?
Isatis tinctoria is commonly known as woad. It is a biennial or short-lived perennial historically associated with natural blue dye production.
Can woad be grown as an ornamental foliage plant?
Can woad be grown as an ornamental foliage plant?
Yes. Its foliage and upright flowering habit can add structural interest to herb, cottage, or naturalistic garden designs.
How should woad be managed if it self-seeds?
How should woad be managed if it self-seeds?
Remove unwanted seed heads before they mature if you want to limit spread. Monitor plants regularly where controlled growth is preferred.
Can woad be included in a dye garden?
Can woad be included in a dye garden?
Yes. Woad has a long history as a natural dye plant, making it suitable for gardeners interested in traditional plant-based dye gardens.
Does woad form a strong foliage display before flowering?
Does woad form a strong foliage display before flowering?
Yes. Woad develops a foliage rosette before sending up flowering stems, creating a two-stage seasonal appearance.
What type of garden suits woad best?
What type of garden suits woad best?
It can fit well in herb gardens, naturalistic borders, dye gardens, and informal perennial plantings.