
Life Cycle
Perennial
Plant Characteristics
Purple spikes
Growth Habit
Upright
Bloom Season
Summer
Flavour Profile
Not edible
Suitable for
Outdoor
Seed Type
Open Pollinated
Plant Type
Flowering Plant
Planting Season
Spring
Fruit Size
Not applicable
Plant Height
60–90 cm
Light Requirement
Full Sun Partial Shade
Water Needs
Moderate
Hardiness Zones
3–9
Container Garden
Yes
Plant Spacing
40–50 cm
Planting Depth
Surface sow
Growing Conditions
Moist well drained soil
Frequently Asked Questions
What makes Physostegia virginiana different from other border perennials?
What makes Physostegia virginiana different from other border perennials?
Its upright flower spikes create strong vertical accents while maintaining a graceful appearance in mixed perennial borders.
Can it be planted beside ponds or streams?
Can it be planted beside ponds or streams?
Yes. It grows well in consistently moist soil, making it suitable for waterside gardens.
Which companion plants pair well with Physostegia?
Which companion plants pair well with Physostegia?
Joe-Pye weed, echinacea, asters, and ornamental grasses create attractive late-season displays.
Can it be used in fresh flower arrangements?
Can it be used in fresh flower arrangements?
Yes. Long flowering stems are suitable for seasonal bouquets and decorative floral arrangements.
Does it create movement in the landscape?
Does it create movement in the landscape?
Yes. Slender flower spikes sway gently, adding texture and movement to garden beds.
Do pollinators visit the blooms?
Do pollinators visit the blooms?
The flowers may attract bees, butterflies, and other beneficial pollinating insects.