Image 1 of 1
Image 1 of 1
Image 1 of 1
Image 1 of 1
A standout for its narrow, upright spires of lavender-purple flowers that bloom from the bottom up, Hoary Vervain adds a formal "candelabra" look to the landscape. It is remarkably drought-tolerant and maintains its silver-green foliage even during the most punishing summer heat.
Sun Exposure Full Sun to Partial Shade
Water Needs Low; very drought-tolerant
Soil Type Well-drained Sand, Loam, or Rocky/Gravelly soil
Mature Height 2 feet
Deer Resistance High
Bloom Time June – September
Bloom Color Purple, Blue
Plant Spacing 10 – 12 inches
Blooms: The flowers are arranged on long, slender spikes that bloom from the bottom to the top. This results in a very long flowering season as the rings of purple slowly "climb" the stem.
Silvery Texture: The leaves are thick, serrated, and covered in soft white hairs, which protect the plant from water loss and give the foliage a unique frosted look.
Non-Aggressive: While it can self-seed in open soil, it grows in a neat, strictly vertical clump, making it a "polite" neighbor that won't flop over or crowd out other plants.
Butterflies: It is a high-priority nectar source for many butterflies, including the Common Buckeye, Silver-spotted Skipper, and various Hairstreaks.
Specialist Bee Support: It is a vital plant for the Verbena Bee (Calliopsis nebraskensis), which specializes in collecting pollen from this specific genus.
Host Plant: It serves as the larval host for the Common Buckeye butterfly.
A standout for its narrow, upright spires of lavender-purple flowers that bloom from the bottom up, Hoary Vervain adds a formal "candelabra" look to the landscape. It is remarkably drought-tolerant and maintains its silver-green foliage even during the most punishing summer heat.
Sun Exposure Full Sun to Partial Shade
Water Needs Low; very drought-tolerant
Soil Type Well-drained Sand, Loam, or Rocky/Gravelly soil
Mature Height 2 feet
Deer Resistance High
Bloom Time June – September
Bloom Color Purple, Blue
Plant Spacing 10 – 12 inches
Blooms: The flowers are arranged on long, slender spikes that bloom from the bottom to the top. This results in a very long flowering season as the rings of purple slowly "climb" the stem.
Silvery Texture: The leaves are thick, serrated, and covered in soft white hairs, which protect the plant from water loss and give the foliage a unique frosted look.
Non-Aggressive: While it can self-seed in open soil, it grows in a neat, strictly vertical clump, making it a "polite" neighbor that won't flop over or crowd out other plants.
Butterflies: It is a high-priority nectar source for many butterflies, including the Common Buckeye, Silver-spotted Skipper, and various Hairstreaks.
Specialist Bee Support: It is a vital plant for the Verbena Bee (Calliopsis nebraskensis), which specializes in collecting pollen from this specific genus.
Host Plant: It serves as the larval host for the Common Buckeye butterfly.