SproutSmart
SproutSmart™ Intelligent Garden Sowing

Purple Coneflower

Zone 13b Save Garden

Planting Schedule

Add Purple Coneflower to your garden to build a schedule and get reminders.
Botanical illustration of Purple Coneflower
90d to harvest

Velvety, rose-purple rays glow above sturdy stems, each bloom crowned with a sculptural, dark center that seems to hold the light. Purple Coneflower offers a satisfying, slightly rugged texture in the garden—petals that keep their form and a prominent cone that deepens in color as the season advances. Grow it for long-lasting floral presence and pollinator appeal, with blooms that shine in beds, borders, and naturalized drifts through the heart of summer.

Crop Dates

Growing note: In frost-free Zone 13b, grow this cool-season crop during the cooler dry season (October–February).
MilestoneDate
Start Indoors—
ClimateFrost-Free Climate
Transplant / Sow OutdoorsOct 1st
Harvest BeginsDec 30th
Harvest EndsFeb 28th

Crop Details

TraitValue
Days to Maturity90
Sun RequirementsFull SunFull sun
Growth HabitUpright
Support NeededNone
Planting DepthNormal
Germination Temp (°F)70
Min Soil Temp (°F)60
Min Night Temp (°F)35
Harden Off (days)7

Today's Conditions

Outdoor planting for Purple Coneflower in Zone 13b typically begins around 2026-10-01. Wait until soil reaches at least 60°F before transplanting Purple Coneflower.

Garden Alerts

In frost-free Zone 13b, grow this cool-season crop during the cooler dry season (October–February).

Recommended Companions

Provence Lavender
View Details →
Rose Rhapsody Salvia
View Details →
Maya Black-eyed Susan
View Details →
Black-Eyed Susan Black-Eyed Susan
View Details →
Munstead Lavender
View Details →
Rhapsody In Blue Salvia
View Details →

Frequently Asked Questions

How often should I water Echinacea purpurea during its main growing phase?
During active growth, water deeply about 1 inch per week, but only when the top 1 inch of soil feels dry. Echinacea (Echinacea purpurea) tolerates some drought once established, so don’t keep the soil consistently wet, which increases mildew and root stress. In containers, check moisture more frequently and let excess water drain fully.
How do I tell when Echinacea purpurea is ready to harvest?
Harvest for best seed and cone quality when the flower head is fully developed and the central cone has darkened and feels dry to the touch, usually around 90 days from sowing. For cut flowers, harvest when the ray petals are fully colored and the central cone is firm, before it starts to shatter and loosen. If you’re saving seeds, let the heads mature on the plant until individual seeds look mature and are easily released.
Botanical illustration of Purple Coneflower

Velvety, rose-purple rays glow above sturdy stems, each bloom crowned with a sculptural, dark center that seems to hold the light. Purple Coneflower offers a satisfying, slightly rugged texture in the garden—petals that keep their form and a prominent cone that deepens in color as the season advances. Grow it for long-lasting floral presence and pollinator appeal, with blooms that shine in beds, borders, and naturalized drifts through the heart of summer.

Today's Conditions

Outdoor planting for Purple Coneflower in Zone 13b typically begins around 2026-10-01. Wait until soil reaches at least 60°F before transplanting Purple Coneflower.

Garden Alerts

In frost-free Zone 13b, grow this cool-season crop during the cooler dry season (October–February).

Sowing Tips

Soil Temperature

Direct sow or transplant when soil at planting depth holds 60°F for reliable germination and early growth.

Expert Note

For best establishment, stratify seeds (cold treatment) and transplant only once soil is consistently workable and nights are mild.