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Product Description
Heirloom Castus Flower Seeds produce lush, attractive blooms that thrive in shaded garden areas. This heirloom variety is ideal for borders, containers, and shaded garden beds. With premium-quality, non-GMO seeds, Castus is easy to grow, low-maintenance, and provides long-lasting flowers that enhance home gardens with vibrant charm.
Features & Specifications:
Heirloom variety with vibrant, attractive blooms
Premium quality, non-GMO seeds
Shade tolerant and easy to grow
Growth Habit: Upright perennial
Bloom Colors: White, pink, or mixed shades
Bloom Time: Spring to summer
Sunlight: Partial to full shade
Plant Height: 12 – 24 inches
Ideal For: Borders, containers, and shaded gardens
Planting Instructions:
Sow seeds ¼ inch deep in well-drained soil and keep soil consistently moist.
Start seeds indoors or in a greenhouse 6–8 weeks before the last frost for best results.
Maintain moderate temperatures (18–22°C) for germination in 10–14 days.
Transplant seedlings to garden beds or containers, spacing 8–12 inches apart.
Place in partial to full shade, water regularly, and remove spent flowers to encourage continuous blooming.

Life Cycle
Perennial shrub
Planting Season
Warm season
Growth Habit
Upright branching
Flavor Profile
Not edible
Plant Characteristics
Purple flower spikes
Use
Shade borders
Growing Conditions
Warm well-drained soils
Harvest Advantages
Summer flowering
Plant Resistance
Heat tolerant
Scientific Name: Vitex agnus-castus
Seed Names
Castus Flower
Seed Type
Heirloom non-GMO
Heirloom Castus, also known as Chaste Tree, is a graceful flowering shrub admired for its slender spikes of soft purple blooms and adaptable garden performance. This non-GMO heirloom variety thrives in partially shaded home gardens and adds height, texture, and seasonal color to borders and landscape plantings.
Light Requirement
Partial shade
Planting Depth
½ inch
Sowing Method
Nursery trays
Plant Spacing
6–10 feet
Days to Maturity
730–1095 days
Soil Preparation
Cold stratification
Hardiness Zones
USDA 6–9
Water Needs
Moderate watering
Planting Season
Spring planting
Seed Count
Recommended Coverage
100
Up to 40 sq ft
500
Up to 200 sq ft
1000
Up to 400 sq ft