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Valerian, also called garden valerian or Spanish lilac, is a herbaceous perennial that flowers in spring and summer.
In summary, what you need to know:
Last name : Centranthus ruber
Family : Caprifoliaceae, valerianaceae
Type : Perennial
Height : 60 to 100 cm
Exposure : Sunny
Ground : Ordinary, even poor
Flowering:May to September
Sowing and planting red valerian
You can start your valerian seedlings at the end of winter or plant your plants bought directly from a garden center in the spring.
Garden valerian seedlings:
Sowing garden valerian takes place at the end of winter under cover or in spring in the ground, after any risk of frost.
Valerian hasneed sun to develop and to flourish.
If you sow directly in the ground,
- Loosen the soil to make the earth lighter
- Broadcast sowing
- Thin out after the first leaves appear to keep only the most vigorous plants every 30 to 40 cm
- Water regularly in fine rain.
It is recommended to plant valerianin the spring or in autumn respecting a distance of 30 cm between each plant.
If you plant valerianin springwe will have to think aboutwater a little more in the beginning.
- No need to add potting soil because the needs of valerian are limited.
- Valerian grows in all types of soil, even sometimes in low walls, between the stones where it comes to nest.
Valerian is a plant that multiplies naturally by seed, but you can also divide the clump.
- Multiplication bydivision of the valerian tuft in autumn
Size, maintenance of valerian
If there is indeed an extremely easy plant which does not requirealmost no maintenance, it's valerian.
Since valerian is even considered an invasive plant, it may be advisable to control its development.
- Cut back as short as possible in the fall, after the flowers have wilted.
- No need to water except for potted valerian which is more drought-prone.
Diseases and parasites that affect valerian
Very easy to maintain, valerian does not fear almost any disease or parasite.
If you do notice a whitish coat or fuzz on the leaves, it is probably powdery mildew.
- here's how fight against powdery mildew
All you need to know about valerian
Valerian or Centranthus ruber owes its name to the botanist De Candolle who compared its flowers to ared spur (kentron means spur in Greek, anthos means flower and ruber means red).
Native to the Mediterranean basin, valerian has aincredible ability to grow in all soils, even the driest.
It is particularly found on the Atlantic coast, as in Charente Maritime.
Finally, valerian is credited with sedative medicinal properties similar to those of officinal valerian. But beware, red valerian or garden valerian is not officinal valerian.
Smart tip about valerian
Be careful, valerian multiplies on its own and very easily and sometimes becomes invasive.