How to Grow Westringia 'White Surprise'

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Westringia 'White Surprise'

Westringia fruticosa 'White Surprise'

shrub

Westringia 'White Surprise' is a compact, variegated Australian shrub featuring narrow, silver-edged green foliage with delicate white flowers. This evergreen cultivar is drought-tolerant once established and thrives in warm, dry climates. It's prized as an ornamental for landscapes, containers, and hedging.

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Example Westringia 'White Surprise' timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Westringia 'White Surprise'

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Westringia 'White Surprise'

    Around Jul 16

    ≈ 90 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Westringia 'White Surprise' dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours minimum daily; tolerates light afternoon shade in hottest regions
💧
Water: Low water needs once established; water moderately during first growing season. In Mediterranean or semi-arid climates, water occasionally during dry spells. Reduce watering in winter. Drought-tolerant but benefits from occasional deep watering in extreme heat.
📏
Spacing: 24-36 inches
📅
Days to maturity: 90-120 days to flowering from transplant
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Planting depth: Plant at same depth as root ball; do not bury the crown

Soil

Type: Well-draining sandy or gravelly loam
pH: 6.5-7.5
Amendments:
Coarse sand or perlite for drainage Minimal organic matter (avoid excessive compost) Gritty soil for container growing

Growing Zones

Find your zone →

Zones 9b-11, with best performance in zones 10-11

9b 10a 10b 11a 11b

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Growth Stages

1

Establishment

4-6 weeks

Young plants develop root system and initial compact branching; foliage shows variegation clearly

Water moderately but allow soil to dry between waterings. Protect from frost in zone 9. Provide bright light. Avoid overwatering, which causes root rot.

2

Vegetative Growth

6-12 weeks

Bushy, compact mounding form develops with multiple stems; silver-edged leaves become more prominent

Prune lightly to maintain shape and encourage bushiness. Fertilize sparingly with low-nitrogen, balanced fertilizer. Remove any non-variegated growth to maintain 'White Surprise' characteristics.

3

Pre-flowering

2-4 weeks

Plant reaches mature size and flower buds begin to form; foliage remains dense and compact

Reduce nitrogen fertilizer to encourage blooming. Maintain consistent soil moisture without waterlogging. Remove dead or crossing branches.

4

Flowering

8-12 weeks (peak flowering)

Small white flowers appear along stems, typically in late winter to spring; some flowers may appear sporadically in other seasons

Deadhead spent flowers to encourage continued blooming. Maintain regular watering during active bloom. Avoid heavy pruning during flowering.

5

Mature/Maintenance

Ongoing

Shrub reaches full size (2-3 feet tall and wide); established and drought-tolerant; flowers intermittently

Water only during extended dry periods. Prune annually in late winter for shape. Minimal fertilizer needed. Can be rejuvenated with hard pruning if overgrown.

Companion Planting

Plan your garden →

Plant with:

Avoid planting near:

Water-loving plants (Hydrangea, Ferns, Hostas) Heavy feeders (Roses, some vegetables) Plants requiring humid conditions Plants needing frequent watering

Common Pests

  • Spray with water to dislodge; use miticide if severe. Increase air circulation. Spider mites favor hot, dry conditions with overhead watering.

  • Inspect regularly; remove by hand or spray with neem oil or insecticidal soap. Avoid over-fertilizing with nitrogen.

  • Prune affected branches; apply dormant oil spray in winter or horticultural oil year-round on infested areas.

  • Use yellow sticky traps; spray with neem oil or insecticidal soap if population is heavy.

  • Ensure excellent drainage; reduce watering frequency; remove affected plants if root rot is severe. Improve soil drainage with sand or grit.

Uses

🏠

Ornamental Landscaping & Hedging

Household

Westringia 'White Surprise' is excellent for drought-tolerant landscapes, Mediterranean gardens, and coastal properties. Its compact form and attractive variegated foliage make it ideal for hedging, borders, and specimen plantings. [source]

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Container Growing

Household

The compact size and slow growth rate make this cultivar perfect for containers on patios, balconies, and in water-wise gardens. Container plants allow indoor winter protection in marginal zones. [source]

🎨

Cut Flowers & Arrangements

Craft

White flowers on variegated stems provide delicate, long-lasting material for floral arrangements and dried flower crafts. [source]

🦋

Pollinator & Bird Support

Wildlife

Small white flowers attract bees and other pollinators, while the dense foliage provides shelter for native birds. Useful in wildlife gardens and pollinator-friendly landscapes. [source]

🏠

Low-Maintenance Coastal & Desert Gardens

Household

Salt and wind tolerance combined with drought resistance makes this shrub ideal for coastal, desert, and difficult-site landscaping with minimal water supplementation. [source]

Harvest Tips

This is an ornamental shrub, not harvested for food. Trim stems for floral arrangements or cuttings anytime during growing season. Take softwood cuttings in spring or semi-ripe cuttings in summer for propagation.

Fun Facts

  • 🌱 Westringia is native to Australia and named after the Australian botanist and explorer Johann Peter Westring.
  • 🌱 'White Surprise' is a sport (spontaneous genetic mutation) of standard Westringia, making it a unique cultivar that must be propagated vegetatively from cuttings to maintain the variegation.
  • 🌱 In its native Australian habitat, Westringia fruticosa is known as 'native rosemary' due to its similarity to Mediterranean rosemary in appearance and cultural requirements.

Gardening Terms

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