Symphytum officinale COMFREY (10 seeds)

Comfrey is a perennial and very hardy herb of the Boraginaceae family.
It is native to Europe, specifically Turkey and the Caucasus.
It reaches 40 to 60 cm in height, and its lifespan varies from 20 to 30 years.

Its roots form a particularly powerful, fleshy, dark-colored taproot system capable of reaching more than two meters in depth.
This allows it to extract minerals and trace elements inaccessible to most other plants.
Its great regenerative capacity allows every root fragment left in the ground to give rise to a new specimen.

The foliage consists of large, dark green, ovate-lanceolate leaves, arranged in a rosette and then alternating along the flowering stems.
Their surface is covered with stiff, rough hairs that give them a coarse texture, sometimes irritating to sensitive skin during handling.

Its flowers form clusters of small, drooping bell-shaped blossoms in shades varying from purple to creamy white.
They bloom throughout the summer, offering an abundant nectar source highly sought after by bees and bumblebees.

Comfrey seeds come from Symphytum officinale; they are black in color and are harvested at the end of August, just after flowering.
To harvest them, simply cut the tops, let them dry, and then collect them.

Properties:

A dynamic accumulator in the garden:

A perennial plant with legendary vigor, comfrey is a fascinating collector's item for any gardener wishing to observe natural mineral recycling mechanisms.
Its deep root system makes it an ideal structural species, capable of exploring soil layers to sustainably enrich your plant ecosystem.

A valuable bio-indicator plant:

Beyond its rustic aesthetics, this species is a true ally for keen observers of the natural environment and their garden soil.
Its spontaneous growth provides precise botanical insights into the organic richness and structure of the land, making it a privileged witness to biodiversity.

Germination and sowing of seeds:

• The best period to sow comfrey begins in March and lasts until May.
• Start by stratifying the seeds in the refrigerator for 1 to 2 weeks before cultivation, or begin sowing early in the year to benefit from natural stratification.
• Sow in a pot with fine horticultural soil.
• Bury 1/2 cm deep.
• Water the crop delicately.
• Leave it in a place at room temperature around 20°C.
• Germination will begin 2 to 3 weeks after sowing.

Soil type:

Comfrey thrives in ordinary, deep, loose garden soil, particularly rich in organic matter or nitrogen.
It favors clay and moist soils that allow optimal deployment of its powerful taproot down to the lower layers.
This vigorous plant tolerates limestone or sandy terrain, provided the substrate is sufficiently draining to avoid suffocation.

Exposure:

Full sun is ideal to stimulate rapid biomass growth and promote abundant melliferous flowering during the summer.
However, the plant accepts a situation in partial shade, particularly in southern regions where light that is too intense could wilt its large foliage.

Temperatures:

This hardy perennial shows excellent thermal resistance, supporting severe winter frosts down to temperatures of -20°C.
Its vegetative development accelerates during spring and summer periods, with a comfort zone located between 15°C and 25°C.

Watering:

Watering must be regular and followed during the planting phase to ensure good recovery of the root system in depth.
Although comfrey is resistant to drought once established, a weekly water supply helps maintain fresh soil and vigorous foliage.

This article was written by Julien on 07/10/2026.