Alphabetical Plant Listing

Veronica spicata subsp. incana 'Pure Silver' (Silver Speedwell)

Silver Speedwell 'Pure Silver', Spiked Speedwell 'Pure Silver'


Grown for both its foliage and flowers, Veronica spicata subsp. incana 'Pure Silver' (Silver Speedwell) is a compact perennial forming a low mound of narrow, toothed, lance-shaped, silver-gray leaves. The 3 in. long leaves (7 cm) are covered with many long white hairs, giving them an overall silver appearance. From mid to late summer, small blue flowers are borne in 3-6 in. long (7-15 cm) terminal racemes and persist for about 4 weeks. 'Pure Silver' is a popular edging plant that also provides good foliage contrast. It performs poorly in high heat and high rainfall areas because its hairy leaves trap moisture, resulting in foliar disease.

  • Grows in bushy, upright clumps, up to 12-24 in. tall (30-60 cm) and 9-12 in. wide (22-30 cm).
  • Performs best in full sun, in average, medium moisture, well-drained soils. Tolerates light shade. Thrives with consistent moisture but with sharp soil drainage. Water plants at the base in an effort to avoid wetting the foliage.
  • Perfect choice for borders, cottage gardens, rock gardens or containers. Excellent fresh cut flower.
  • No serious insect or disease problems.
  • Remove spent flowers to promote additional blooms. Shear back the foliage if it becomes worn-looking after flowering.
  • Clumps may be easily divided in spring or early autumn.

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Requirements

Hardiness 4 – 8
Heat Zones 1 – 8
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 14, 15, 16, 17, A1, A2, A3
Plant Type Perennials
Plant Family Veronica - Speedwells
Exposure Full Sun
Season of Interest Summer (Mid,Late)
Height 1' – 2' (30cm – 60cm)
Spread 9" – 1' (22cm – 30cm)
Spacing 9" – 12" (22cm – 30cm)
Water Needs Average
Maintenance Low
Soil Type Loam
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Cut Flowers, Showy
Attracts Butterflies
Garden Uses Beds and Borders, Edging, Patio and Containers
Garden Styles Gravel and Rock Garden, Informal and Cottage

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Ball Horticultural

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 4 – 8
Heat Zones 1 – 8
Climate Zones 1, 1A, 1B, 2, 2A, 2B, 3, 3A, 3B, 4, 5, 6, 7, 14, 15, 16, 17, A1, A2, A3
Plant Type Perennials
Plant Family Veronica - Speedwells
Exposure Full Sun
Season of Interest Summer (Mid,Late)
Height 1' – 2' (30cm – 60cm)
Spread 9" – 1' (22cm – 30cm)
Spacing 9" – 12" (22cm – 30cm)
Water Needs Average
Maintenance Low
Soil Type Loam
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Cut Flowers, Showy
Attracts Butterflies
Garden Uses Beds and Borders, Edging, Patio and Containers
Garden Styles Gravel and Rock Garden, Informal and Cottage

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