Plant Purity Japanese Andromeda in well-drained, acidic soil with partial to full shade. Water regularly to keep the soil consistently moist, especially during dry spells. Fertilize in early spring with an acid-loving plant fertilizer. Prune after flowering to maintain shape and remove dead or damaged branches. Protect from harsh winter winds and heavy snow by providing a windbreak or covering. Monitor for pests like lace bugs and treat as needed.