Identifying Common Evergreen Shrubs: A Field Guide

Evergreen shrubs—woody plants under 5 meters with multiple stems that retain foliage year-round—are landscape workhorses for hedges, screens, groundcovers, and ornamentals. Learning to identify the major groups simplifies selection and care.

Major Types

• Junipers (Juniperus): Needle-like or scale-like foliage; often prickly. Height: 1–15 feet. Used for hedges, borders, groundcover. Many cultivars.
• Yews (Taxus): Soft, flat, dark green needles. Shade-tolerant; adaptable. Excellent formal hedges. Toxic if ingested. Avoid waterlogged soil.
• Arborvitae (Thuja): Flattened, scale-like sprays; pyramidal or rounded. Heights from dwarf (3–4 ft) to 40–50 ft. Dense screens. Many foliage colors.

Dwarf conifers (pine, fir, spruce cultivars) can also be trained as shrubs.

Identification Tips

• Light needs: Most prefer full sun; flowering types need maximum light during bloom.
• Broadleaf evergreens (e.g., rhododendron, boxwood) need wind protection, winter shade, and consistent moisture.
• Spacing: Allow 1+ foot annual expansion. Shrubs are wider at base than top.
• Growth & pruning: Size increases yearly in good conditions. Prune to maintain form; prune flowering types after bloom.

Special Uses

• Small spaces: Upright junipers, emerald arborvitae (minimal spread).
• Butterfly gardens: Fragrant flowering evergreens.
• Bonsai & topiary: Species tolerant of shearing (boxwood, yew, holly).
• Medicinal: Rosemary (Salvia rosmarinus) for culinary and herbal use.

Selection Checklist

1. Determine your USDA zone.
2. Assess sun exposure, soil type, drainage.
3. Define function: hedge, screen, specimen, groundcover.
4. Choose species matching site conditions.
5. Source from reputable nursery.