How to grow Rumex sanguineus from seeds

Rumex sanguineus, commonly known as wood dock, bloody dock or red-veined dock, belongs to the knotweed family (Plantaginaceae). It is used as a culinary herb and ornamental plant and is not quite as easy to grow as the popular sorrel (Rumex acetosa). It likes moist to wet conditions and cannot cope with dry habitats.

Rumex sanguineus seeds
Rumex sanguineus is a light-dependent germinator; the seeds should be placed on the surface of the substrate without being covered.

Sowing instructions

It can be sown indoors all year round, in the garden or on the balcony from spring to early summer.

As wood dock is a light germinator and its seeds can dry out quickly in the bed, I decided to sow it in a pot.

The seeds are simply placed on the substrate and carefully pressed down, but not covered. To prevent them from drying out, the pot can be placed in a saucer filled with water. Or it can be covered with a freezer bag.

Even a brief drying out of the soil can cause the germinating seeds to die.

germinating seeds Rumex sanguineus
The first seeds can germinate after a week.

I used peat-free vegetable soil as substrate.

At 71 to 77 °F (22 to 25 °C), the first cotyledons appeared after about a week. The seeds germinate unevenly.

Until all the seeds have emerged (germinated), a bright location without direct sunlight is ideal.

seedlings of Rumex sanguineus
Seedlings of Rumex sanguineus six weeks (top) and two weeks after sowing (bottom). The substrate was dry for a short time, which is why I reseeded.

Categories: Herbs | Nuts & Seeds |

More species from the Plantaginaceae / plantain family