Product description:SUBSTRAL® fertiliser sticks with Vital-Active contain a combination of valuable nutrients and important trace elements that provide your green plants with optimal care for two months and therefore promote the plant's own defences. The proven SUBSTRAL® Iron Plus prevents iron deficiency and thus yellowing of the leaves. Application:for: all green plantsCharacteristics:Practical fertiliser sticks for all green houseplants For strong growth and deep leafy greenery Works for 2 months with Iron Plus Instructions for use:Press the sticks into the soil between the plant and the edge of the pot Make sure that the fertiliser is evenly distributed Repeat fertilisation every 2 months In the period from October to February, halve the application rateApplication rate:Pot diameter 8 to 9 cm - 1/2 sticks10 to 12 cm - 1 to 2 sticks13 to 16 cm - 3 sticks17 to 20 cm - 4 to 5 sticksover 20 cm - corresponding to moreApplication time: all year roundActive ingredients/ingredients: NPK(Mg) fertilizer with formaldehyde urea,10-7-9(-2), with trace nutrientsPackage size: 30 pieces blisterUse by non-professional users permitted. This product information does not replace compliance with the instructions for use and does not claim to be complete. Always read the label and product information before use. Observe warnings and symbols in the instructions for use.