Growing Information

Growing zone guide
Growing Zone Zone 4, Zone 5, Zone 6, Zone 7, Zone 8, Zone 9
Sunlight Bright light
Type of Soil Neutral to alkaline
Mature Height 24 to 28 inches
Maintenance Level Low maintenance
Water Requirement Low watering (once every 2 weeks)

Learn more about this plant

Additional Information
Growth Rate

– Moderate to fast-growing once established

– Reaches full height (28–34 inches) and width (28–36 inches) within one season

Colorful Leaves Yes
Flowering Yes
Bloom Color Purple & Lavender, Blue
Ornamental Berries N/A
Disease resistant Yes
Cold Tolerant Yes
Heat Tolerant Yes
Drought Tolerant Yes
Deer Resistant Yes
Edible No
Wildlife Attraction

Highly attractive to bees, butterflies, and hummingbirds

Deer and rabbit resistant due to aromatic, somewhat bitter foliage

– Excellent for pollinator gardens, xeriscapes, and wildlife borders

Self-pollinating Cross-pollinating
Seasonality

Bloom time: Mid-summer to early fall (July–September)

Foliage season: Spring to frost

Winter: Top growth dies back; cut back in early spring

USDA Hardiness Zones: 4–9

Ideal For
  • Dry, sunny borders
    – Pollinator and xeriscape gardens
    – Textural contrast in perennial beds
    – Scented plantings
Leaf Description

– Fine, deeply dissected silvery-green foliage

– Leaves are soft-textured and highly aromatic when crushed

– Creates a feathery, soft-looking mound even before blooming

Flower Description

Lavender-blue tubular flowers held in smoky purple calyces

– Long, upright flower spikes from mid-summer through early fall

– Calyces remain colorful even after petals drop, extending visual interest

– Adds vertical structure and soft pastel color to garden palettes

Pruning & Maintenance

In spring, cut stems back to 4–6 inches before new growth emerges

– Avoid pruning in fall, as stems provide winter interest and protection

– Deadheading is not required, but may prolong bloom in some regions

– If stems flop, they can be lightly trimmed to maintain shape

Water Needs

– Requires moderate water during establishment (first 4–6 weeks)

– Once established, it is highly drought tolerant

– Water only during extended dry periods in summer

– Overwatering or poorly drained soil may cause root rot

Light Needs

– Requires full sun (minimum 6 hours daily) for best flowering and compact form

– Performs poorly in shade or low light; stems may become leggy

Harvesting

– Can be harvested for cut flowers or dried arrangements

– Harvest flower stems when blooms are fully open

– Foliage can be cut and dried for potpourri or sachets

– Best harvested in the morning for maximum fragrance retention

Fertilizing

– Minimal fertilization required

– Apply a light layer of compost or a low-nitrogen fertilizer in early spring

– Avoid rich soils or over-fertilizing, which can lead to lanky growth

Additional Care Tips N/A
Pollination

– Attracts bees, butterflies, and hummingbirds

– Flowers produce nectar, making it a valuable plant for pollinators

– Sterile hybrid; does not self-seed, making it non-invasive

Companion Plants

Echinacea purpurea (Coneflower) – matches bloom season and drought tolerance

Rudbeckia fulgida (Black-eyed Susan) – golden blooms contrast nicely with lavender

Achillea millefolium (Yarrow) – soft texture and dry garden compatibility

Gaillardia (Blanket Flower) – thrives in similar hot, dry sites

Salvia nemorosa – shares pollinator value and upright form

Lavandula (Lavender) – complements with fragrance and foliage

Sedum spp. – visually balances with succulent foliage and late-season blooms

– Ornamental grasses (Panicum, Schizachyrium, Stipa) – enhance naturalistic appeal

Flowering and Seasonality

Bloom time: Mid-summer to early fall (July–September)

Foliage season: Spring to frost

Winter: Top growth dies back; cut back in early spring

USDA Hardiness Zones: 4–9

Lavender-blue tubular flowers held in smoky purple calyces

– Long, upright flower spikes from mid-summer through early fall

– Calyces remain colorful even after petals drop, extending visual interest

– Adds vertical structure and soft pastel color to garden palettes

Pet Friendly

Yes

Growing Zone
  • Zone 4
  • Zone 5
  • Zone 6
  • Zone 7
  • Zone 8
  • Zone 9

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