New plantings: Individual bulbs: dig a hole three times the height of the bulb. Sprinkle 5 -7.5 ml of fertilizer (1 – 1 ½ tsp) into the bottom of the hole. Cover fertilizer with 1 cm (1/2 in) of soil before planting bulb.
New Beds: sprinkle fertilizer on the surface of the soil at the rate of 500 g per 1.5 m².
Mix into soil as deeply as possible.
Established Plantings: In early spring, apply to the surface of the soil at the rate of 500 g per 1.5 m². Repeat application once more in the fall after plants have bloomed.