Walter's Viburnum (Viburnum obovatum)

Walter's Viburnum

Viburnum obovatum

Dense evergreen foliage forms quiet year-round garden structure. Flowering ornamental shrub; common names: Walter's Viburnum, Small-leaf Viburnum.

Full sun
1–2/week
Beginner
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Plant Needs

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Sunlight Full sun to partial shade; more sun exposure promotes heavier flowering, while partial shade is tolerated in warmer climates
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Watering Water deeply when the top 5–7 cm of soil dries out; drought-tolerant once established
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Temperature Hardy to USDA zone 8; tolerates brief frosts down to -10°C and moderate summer heat up to 35°C
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Characteristics

  • Leaf: Small obovate to elliptical glossy dark green leaves (1–3 cm long) with smooth margins
  • Flower: Clusters of tiny fragrant white umbel-like cymes (2–4 cm wide)
  • Fruit: Blue-black drupes ripening in late summer, attractive to native birds
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Care Guide

Watering

Keep soil consistently moist during active growth periods

Fertilization

Apply balanced slow-release fertilizer once at the start of growth. Avoid high-nitrogen fertilizers to prevent excessive foliage growth over flowering

Composted eggshell powder:Sprinkle 1–2 tbsp of finely ground eggshell powder around the base in spring; gently work into topsoil to avoid root disturbance
Pruning
  • Prune immediately after flowering to shape hedges or remove dead, damaged, or crossing branches
  • Thin dense inner growth to improve airflow and light penetration
  • Reduce overall height in late winter to maintain desired form before new growth emerges
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Toxicity

Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion can cause vomiting, diarrhea, abdominal pain, and lethargy

Humans: Contains cyanogenic glycosides; ingestion of large quantities may cause mild gastrointestinal upset

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Garden Uses & Culture

Culture: N/A

Usage: Hedge plant, wildlife garden for bird foraging, ornamental landscape shrub