linum suffruticosum, commonly known as white linen, reinforced linen, wild flax o Saint John's wort, is a perennial plant belonging to the Linaceae family. It stands out for its woody appearance and the beauty of its white flowers, which add a touch of elegance to the Mediterranean landscapes and gardens where it is grown. In this article, you will discover the main characteristics and necessary care to maintain this species in optimal conditions.
Botanical description and main characteristics

linum suffruticosum It is an evergreen shrub, generally greyish in appearance. Its stems, which can be ascending or spreading, reach variable heights from 5 to 40 centimeters, although sometimes they come close to 1 meters in certain subspecies. The base is usually woody, which allows it to survive in dry and stony environments.
The leaves They are linear, very narrow (about 1 mm wide), sharp, and with finely serrated margins, often curled toward the underside. This adaptation helps the plant minimize evapotranspiration in arid environments. Its striking white flowers about 2 centimeters in diameter, each composed of five loose petals with violet veins, grouped at the ends of the branches. Flowering is especially profuse in spring and extends throughout the summer, depending on conditions.
El fruit It is a spherical capsule that opens into ten valves and contains numerous small seeds. This structure favors the dispersal of the species in its natural environment.
Distribution and habitat
linum suffruticosum It is native to the Mediterranean regions of Europe and North Africa. It is widely distributed in Spain, especially in areas such as the Ribera del Tudela, the Zona Media, and the surrounding mountain ranges, where it thrives in open, sunny environments, from low-lying soils to mountainous areas. You can find more information about similar plants in our article. on plants with a woody appearance.
Prefer carbonate soils, although it is able to adapt to both acidic and calcareous soils, which is why it is so versatile for different types of gardens. It is usually found in thyme fields y rosemary, where it coexists with other xerophilous species and tolerates semi-arid, dry and, occasionally, sub-humid ombrotypes well.
Subspecies and particularities
At least two main subspecies are recognized:
- L. suffruticosum subsp. suffruticosum: A bush with an upright growth, more woody and that can exceed the half a meter tall. The petals of its flowers reach approximately 0,3 cm.
- L. suffruticosum subsp. appressum: More prostrate, less woody and with slightly smaller petals, up to 0,2 cm. It is usually found in supra-Mediterranean or hilly areas.
Both subspecies share an adaptability to drought and a preference for clear, open spaces.
Pollination and reproduction

The flowers of the linum suffruticosum require the Cross pollination, since the species is heterostylic (flowers vary in style and stamen length from individual to individual). This prevents self-pollination and encourages genetic variability. insects Pollinators, such as bees and butterflies, play a crucial role in reproduction and subsequent seed formation.
La multiplication It is primarily done with seeds in spring. Simply sow them directly in a seedbed or in the final soil, ensuring constant moisture until germination.
Linum suffruticosum care

- Location: Requires full sun exposure. Direct light is essential for abundant flowering and compact growth. To choose the perfect location, see our article on tree and shrub care.
- Ground: Although it tolerates a wide variety of soils, it grows best in loose, well-drained, slightly alkaline soilsIt is pH indifferent, making it suitable for both pots (with universal substrate) and gardens.
- Irrigation: During the summer, it is advisable to water some three times per weekAt other times, watering every 3-4 days is sufficient. It's essential to avoid waterlogging, so it's a good idea to review how to maintain good soil drainage.
- Subscriber: Apply organic fertilizers from spring to late summer, preferably once a month. This improves flowering and plant vigor, especially in poor soils.
- Pruning: Although not strictly necessary, light pruning after flowering helps maintain the compact and healthy appearance of the plant.
- Rusticity: Linum suffruticosum tolerates moderate frosts, resisting low temperatures of up to about -4 ° C without difficulty.
Pests, diseases and key tips
White linen is a species disease resistant and pests, although in extremely humid environments, fungi may appear on roots or stems. The greatest risk to cultivation is excess water, so it is recommended avoid gridlock and monitor ventilation, especially in pots.
With regards to toxicity, no serious problems have been reported for people or pets, although it is always advisable to avoid direct ingestion of any part of the plant.
Ornamental and ecological uses
linum suffruticosum It is primarily used for ornamental purposes due to the delicacy of its flowers and its hardiness. It's ideal for xeriscaping, rockeries, borders, and low-maintenance gardens, where it provides color and contrast during flowering. For more ideas on plants that provide different textures, visit plant that adds contrast to your garden.
It also encourages the presence of pollinators in the garden, contributing to local biodiversity. It isn't used for fiber or edible seeds like other species of the Linum genus, but its aesthetic and ecological value is undeniable.
White flax, or Linum suffruticosum, stands out for its adaptability, low water requirements, and resistance to adverse conditions. It is an excellent choice for Mediterranean or natural gardens, providing beauty y functionality with minimal care.