How to Care for Evergreen Bushes | Keep Them Thriving Year-Round

Evergreen shrubs stay green through winter, but care mistakes that kill them happen in summer. Shallow watering, mulch piled against the trunk, and pruning too late in the year are the three fastest ways to lose a bush. The right care is simple once you match it to whether the shrub is newly planted or established — and whether your winters bring wind, snow, or hard freezes.

Watering: How Much and How Often

The biggest evergreen-killer is a sprinkler running for ten minutes every evening. Shallow watering encourages roots near the surface, where they dry out fast and freeze easily. Instead, water deeply once or twice per week, adjusting for heat, drought, and rainfall. A soaker hose or drip line delivers water straight to the roots without wetting leaves — overhead watering invites fungal diseases.

Newly planted shrubs need more frequent watering, sometimes every day or every other day for the first two weeks depending on species and weather. That schedule lasts only until roots spread into surrounding soil. Most evergreens take about a year to become fully established; consistent deep watering during that first growing season makes the difference between thriving and struggling. Continue soaking in late fall until the ground freezes; if a winter thaw leaves the ground bare, give the shrub a drink then too.

Mulching and Soil: The Right Way to Protect Roots

Apply 2 to 4 inches of organic mulch — wood chips, shredded bark, or compost — in a doughnut shape around the base, keeping mulch several inches away from the trunk. Piling mulch against bark creates the “mulch volcano” problem: bark stays wet, rots, and insects move in. The doughnut holds moisture at the root zone while the trunk stays dry.

If your soil tests as strongly alkaline, acidify it with a sprinkle of elemental sulfur. For neutral or only slightly basic soil, adding organic material like compost, aged manure, or peat moss is enough to keep evergreens happy without overcorrecting pH. Test the soil before amending — blind amendments can cause more problems than they solve.

For planting new bushes correctly and choosing the best varieties for your landscape, check our recommended evergreen bushes for every yard — each entry includes specific care needs and growth habits.

Pruning: When and How Much to Cut

Prune most evergreen shrubs just before spring growth begins, giving the plant the whole growing season to recover. Avoid pruning in late summer or fall — that stimulates tender new growth that won’t harden off before winter frosts kill it. For flowering evergreens, prune right after blooms fade so you don’t cut off next year’s flower buds.

The one-third rule protects the plant: never remove more than one-third of total growth in a single year. If unsure, stick to one quarter. For overgrown shrubs, spread work across two to four years by removing about one-third of the oldest stems each year. A severe single cutback can shock the plant badly enough that it never fully recovers.

Always remove dead, diseased, damaged, or crossing branches first — this improves air circulation and light penetration. Critical warning: some evergreens, especially junipers, will not leaf out on bare wood. When you cut past all remaining green growth, that branch stays bare forever. Never cut a juniper branch beyond where you see green needles or scales still attached.

Fertilizing and Winter Protection

Fertilize once in early spring with a slow-release balanced fertilizer. Acid-loving evergreens benefit from a second light feeding in early fall using an acid-specific product. Over-fertilizing is worse than under-fertilizing — too much nitrogen forces weak, soft growth that pests and frost love. If the shrub looks healthy and green, it may not need fertilizer at all.

In colder climates, broadleaf evergreens need protection from desiccating winter winds. A burlap screen on the windward side prevents leaves from drying out when the ground is frozen and roots can’t replace lost moisture. Anti-desiccant sprays applied in late fall add another layer of protection. Heavy snow can break branches, so gently brush off accumulation after storms.

When planting new shrubs, position them away from west and south winds. That simple placement, backed by the Chicago Botanic Garden’s guidance, can mean the difference between surviving winter and coming out brown and brittle.