How to Fertilize Alstroemeria 'Summertime'?
Balanced perennial feed every four weeks from spring through summer

Alstroemeria 'Summertime' · Alstroemeria 'Summertime'
Grow in fertile, moist but well-drained soils in full sun or partial shade. Young plants are best left undisturbed to form clumps; use a dry mulch for the first two winters. See Alstroemeria cultivation
Balanced perennial feed every four weeks from spring through summer