Product Description

Overview

Sea Blue Holly Flower Planting Seeds grow into dramatic perennial plants admired for their metallic sea-blue flower heads surrounded by spiky bracts and silvery-blue foliage. Commonly known as Sea Holly (Eryngium), this plant is prized for its architectural beauty, drought tolerance, and exceptional performance in modern, cottage, and wildflower gardens. Perfect for borders, rock gardens, dry landscapes, patio containers, and long-lasting cut or dried flower arrangements, Sea Blue Holly adds bold structure, rare color, and exotic charm to any garden space.

Features

Premium-quality, non-GMO Sea Blue Holly Flower Planting Seeds
Produces metallic sea-blue spiky flower heads
Ideal for garden beds, borders, rock gardens, and pots
Strong germination with upright, clump-forming perennial growth
Highly drought-tolerant once established
Excellent for fresh and dried floral arrangements
Highly attractive to bees and beneficial pollinators
Low-maintenance and beginner-friendly perennial flower

Specifications

Plant Type: Perennial
Common Name: Sea Blue Holly, Sea Holly
Scientific Name: Eryngium planum / Eryngium spp.
Variety: Sea Blue Flowering Type
GMO Status: Non-GMO
Heirloom: Yes
Growth Season: Spring–summer
USDA Zones: 4–9
Sun Exposure: Full sun
Soil Type: Well-drained, sandy or loamy soil
Bloom Time: Mid-summer to early autumn
Plant Height: 18–36 inches
Spacing: 12–18 inches
Watering: Low to moderate (drought tolerant)

Planting Guide

Sowing Method: Start indoors in trays or direct sow outdoors
Seed Preparation: Cold stratification for 2–4 weeks improves germination
Sowing Depth: 1/8 inch deep
Germination Time: 14–28 days after stratification
Ideal Temperature: 15–22°C
Transplanting: Transplant when seedlings are strong and well-rooted