Fermented Comfrey Extract

Fermented Comfrey Extract

Fermented Comfrey Extract is a ready to use liquid plant feed made by fermenting comfrey leaves, the traditional potassium rich feed for flowering and fruiting plants. Dilute it as a soil drench or foliar spray at any stage from seedling to flowering.

At a glance

• Type: liquid fermented plant extract (comfrey)
• Use for: soil drench and foliar spray, flowering and fruiting plants, compost tea
• Rate: soil drench 1 part in 100 to 1 part in 500 (10 ml down to 2 ml per litre); foliar 1 part in 500 (2 ml per litre)
• Pack: 1 litre

What it is

Comfrey (Symphytum) is the gardener's potassium plant: its deep roots pull up potassium and the leaves are cut, covered with water and fermented into a liquid feed. Ours is made that way, strained and bottled ready to dilute.

We do not have an analysis for the extract, so no figures are stated.

What it does

• Supplies potassium and other minerals from the comfrey leaf in solution, which is why growers use it on flowering and fruiting plants.
• Adds the microbes and metabolites of the ferment to a drench or a compost tea.
• Suits any stage from seedling to flowering.

How to use

• Soil drench: dilute 1 part in 100 to 1 part in 500 (10 ml down to 2 ml per litre of water).
• Foliar spray: dilute 1 part in 500 (2 ml per litre of water).
• Compost tea: add to the brew alongside other plant extracts.
• Start at the weaker dilution on seedlings and cuttings.

Learn more in fifteen seconds

• Potassium: what it does
• Foliars: fast fixes, then the soil

Handling and storage

• Wear gloves and eye protection, and wash hands after use.
• Once opened, keep sealed in a cool dry place.
• Strong smell. Spray outdoors or with the extraction on, and foliar with the lights off or in the evening.