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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
Annual
Planting Season
Spring–Early Summer
Growth Habit
Mounding Spreading
Flavor Profile
Not
Plant Characteristics
Deep Black Blooms
Use
Borders, Containers
Growing Conditions
Full Sun, Loamy Soil
Harvest Advantages
Continuous Bloom
Plant Resistance
Heat Tolerant
Seed Names
Black Velvet Petunia
Seed Type
Hybrid Open-Pollinated
Light Requirement
Full Sun
Planting Depth
Surface Sow
Sowing Method
Indoor or Direct
Plant Spacing
10–12 Inches
Days to Maturity
80–90 Days
Soil Preparation
No Soaking Needed
Hardiness Zones
9–11
Water Needs
Moderate
Planting Season
Spring
Seed Count
Recommended Coverage
100
Up to 50 sq ft
500
Up to 250 sq ft
1000
Up to 500 sq ft