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The time taken for perennial seeds to germinate varies from species to species. Some take a few weeks or months while others need up to 2 years. Not all seeds germinate at the same time and most species DO NOT have a 100% germination rate. Some species need to be chilled, scarified or soaked in water in order to germinate. This applies to several species of vines, trees, shrubs, tropicals and large seeds.
COLD STRATIFY ALL PERENNIALS, SHRUB & TREE SEEDS for at least 30 days unless the plant specific instructions indicate a longer period of stratification.
If you are unsure of the best way to germinate the seeds, pls DO NOT SOW ALL THE SEEDS. Keep some in case the germination method you use doesn’t work.
Some of the seeds we offer are more tailored to experienced gardeners. If you are new to gardening, you might want to start with annuals such as Petunias or Snapdragons.
DESCRIPTION:
USES: Cut flower, rock gardens, flower borders, naturalized areas in small or large groupings, attracts pollinators. Excellent for drying.
Botanical Name: Allium aflatunense, Allium hollandicum
Common Name: Ornamental Onion, Persian Onion
Type: Perennial
Flower Color: Large 4-5 in (10-12 cm), purplish-pink, multi-flowered umbels held on tall leafless stems
Flowering Season: Spring
Plant Height: 24-36 in (60-91 cm)
Plant Spacing: 19 in (50 cm)
Light Requirements: Full Sun, Partial Shade
Water Requirements: Average. Drought tolerant but needs moisture when blooming.
Soil Requirements: Well-drained. Average, Clay, Loam (Silt), Sand, Shallow Rocky
USDA Zones: 4-11
AHS Heat Zones: 12-1
Seed Count: 25 Seeds (Seed counts over 100 are approximate)
Sowing Instructions (Cliff Notes version): Warm stratify at 64-71 F (18-22 C) for 2-4 weeks. Keep the soil moist then Cold stratify at 24-39 F (-4 to +4 C) for approximately 4-6 weeks. If the cold stratification temperatures are not met, extend the stratification for a longer period of time. Can take up to 12 weeks to germinate. Alternatively, you can sow the seeds in containers in a cold frame. Read the Seed Guide for Perennials.