Key Facts
- Evergreen broadleaf shrub with small glossy leaves
- Valued for formal hedges and topiary because it tolerates heavy pruning
- Slow to moderate growth rate depending on cultivar and site
- Produces small, fragrant greenish spring flowers
- Prefers well drained soil and can tolerate neutral to slightly alkaline pH
- Performs in full sun to part shade and benefits from afternoon shade in hot climates
- Susceptible to boxwood blight and insect pests such as leafminer and psyllid
- Propagated chiefly by cuttings or layering for true to type plants
- All parts reported as potentially toxic if ingested and sap can irritate sensitive skin
Common Boxwood is an evergreen broadleaf shrub prized for dense glossy foliage and formal hedging. It tolerates heavy pruning which makes it a top choice for hedges and topiary while remaining vulnerable to fungal disease and insect pests.
Identification
Common Boxwood has small glossy leaves on a compact branching habit and produces small fragrant greenish flowers in late spring. Mature size varies by cultivar and pruning with typical heights from 2 to 12 feet and spreads from 2 to 8 feet depending on form and maintenance.
Best uses and where to plant
Use Common Boxwood for formal hedges, clipped borders, foundation planting and topiary where dense evergreen foliage is desired. It grows in full sun to part shade and benefits from afternoon shade in hot climates. Expect good performance in USDA zones 5 to 9 as a general guide.
Planting and spacing
Plant when soil is workable and temperatures are moderate, often in spring or fall in many climates. Space plants according to the anticipated mature spread of the chosen cultivar and adjust distances for tight hedges or widely spaced specimens. Site selection and cultivar choice determine final spacing and visual effect.
Soil and light
Choose well drained fertile soil and avoid waterlogged ground which leads to root decline. Common Boxwood tolerates neutral to slightly alkaline soil and will grow in a range of soils if drainage is good. Provide full sun to part shade and protect from harsh afternoon sun in hot regions.
Watering and maintenance
Keep plants evenly moist while establishing and avoid prolonged wet feet which invite root rot. Mulch to conserve moisture and moderate soil temperature. Monitor plants for stressed foliage which can indicate overwatering, poor drainage or root problems and correct soil conditions promptly.
Pruning and after flowering care
Boxwood tolerates heavy pruning which makes it suited to shaping and topiary. Light shaping can be done through the growing season with heavier shearing after spring flowering to preserve bloom and allow new growth to harden. Use sharp clean tools and remove prunings from the site if disease is present.
Pests and diseases
Common Boxwood is susceptible to boxwood blight and to insect pests such as leafminer and psyllid. Improve air circulation and avoid overhead irrigation to reduce disease risk. Remove and destroy infected material and follow local extension advice for monitoring and control options.
Propagation
Propagate named cultivars by semi hardwood cuttings or by layering to ensure true to type plants. Hardwood cuttings and seed are also used for species propagation. Cuttings are the common method for maintaining cultivar characteristics in the landscape.
Safety and toxicity
All parts of Common Boxwood are reported as potentially toxic if ingested and sap can irritate sensitive skin. Wear gloves when pruning and keep trimmings away from children and pets. Confirm specific toxicity symptoms with a regional poison control or veterinary source if ingestion is suspected.
Frequently asked questions
- How fast does Common Boxwood grow?
- Growth is slow to moderate and varies by cultivar and site conditions with some forms remaining compact and others reaching larger sizes over years.
- What size do boxwoods reach?
- Typical garden forms range from about 2 to 12 feet tall and 2 to 8 feet wide depending on cultivar and pruning regime.
- Are boxwoods prone to disease?
- Yes. Boxwood blight is a serious fungal disease and common insect pests include leafminer and psyllid. Good spacing and dry foliage reduce risk.
- Can I shear boxwood into shapes?
- Yes. Boxwood tolerates heavy pruning and is well suited to clipped hedges and topiary when maintained regularly.
- Are boxwoods toxic to pets?
- They are reported as potentially poisonous if ingested. Contact regional poison control or a veterinarian for specific guidance if exposure occurs.
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