How to Fertilize compact grape hyacinth?
Light bulb fertilizer at emergence and again after flowering

compact grape hyacinth · Muscari botryoides
Also known as: sky-blue grape hyacinth; baby's breath; bluebottle; starch flower; Greek grape hyacinth
Plant 10cm deep in autumn in any moderately fertile, well-drained soil. Lift and divide (when dormant in summer) congested clumps to maintain vigour
Light bulb fertilizer at emergence and again after flowering