How to Fertilize California lilac 'Tilden Park'?
Low phosphorus shrub fertilizer once yearly early spring time

California lilac 'Tilden Park' · Ceanothus 'Tilden Park'
Grow in fertile, well-drained soil in full sun with shelter from strong, cold winds. Lime tolerant but may become chlorotic on shallow chalk soils. See ceanothus cultivation
Low phosphorus shrub fertilizer once yearly early spring time