Rich in potash, trace elements and mineral salts (calcium, magnesium, copper, manganese, boron, etc.), comfrey manure promotes flowering and fruiting. We recommend adding 0.1% black soap for spraying. Dilution of comfrey manure - Gardening, horticulture, nursery, etc. 10% by watering at 3-week intervals. - Large-scale crops, green spaces, orchards, vineyards, etc. Before fruiting: 2 to 3% by spraying. At fruiting: 5 to 10% by spraying. Click here to download the instructions for use in PDF format.