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Product Description
Bring vivid color and seasonal beauty to your garden with Purple Mexicali Sunburst Penstemon Flower Seeds. This heirloom variety offers tubular purple blooms that attract pollinators and bloom generously throughout the season—ideal for borders, rock gardens, and wildflower areas.
Features & Specifications:
Plant Type: Flower – Penstemon (Mexicali Sunburst)
Flower Color: Purple
Seed Type: Heirloom, GMO-free
Growth Habit: Upright, bushy
Sun Requirement: Full sun
Soil Preference: Well-drained soil
Maintenance: Low maintenance, heat-tolerant
Planting & Sowing Instructions:
Sowing Time: Start indoors 8–10 weeks before last frost or sow directly outdoors in spring
Depth: Lightly press seeds into soil; do not bury deeply
Spacing: Thin seedlings to 12–18 inches apart
Watering: Keep soil lightly moist during germination; drought-tolerant once established
Germination: 14–21 days under optimal conditions
Care: Deadhead to prolong blooming; no staking required

Life Cycle
Perennial
Planting Season
Warm season
Growth Habit
Upright clumping plant with slender stems
Flavor Profile
Not applicable
Plant Characteristics
Vibrant purple tubular blooms arranged along tall elegant spikes
Use
Borders, cottage gardens, pollinator gardens, cut flowers
Growing Conditions
Well-drained soils with full sunlight
Harvest Advantages
Long seasonal blooming spikes ideal for decorative arrangements
Plant Resistance
Drought tolerant once established, heat tolerant, low maintenance
Scientific Name: Penstemon mexicali
Seed Names
Purple Mexicali Sunburst Penstemon Seeds
Seed Type
Heirloom open-pollinated (GMO Free)
Purple Mexicali Sunburst Penstemon is admired for its tall spikes of vivid purple tubular flowers and graceful garden presence. Thriving in sunny garden beds, this heirloom perennial produces attractive blooms that draw pollinators and add vertical interest. Its hardy nature and seasonal flowering make it a beautiful addition to home garden landscapes.
Light Requirement
Full sun
Planting Depth
Surface sow; lightly press into soil
Sowing Method
Direct sow outdoors or start indoors after stratification
Plant Spacing
12–18 inches
Days to Maturity
80–110 days
Soil Preparation
Cold stratification recommended for 2–4 weeks
Hardiness Zones
USDA 5–9
Water Needs
Low to moderate; well-drained soil
Planting Season
Spring / Early Summer
Seed Count
Recommended Coverage
100
Up to 15 sq ft
500
Up to 30 sq ft
1000
Up to 150 sq ft