Allium spaerocephalon | Drumstick Allium

Planting guides for Annuals, Biennials, Perennials, Shrub & Vine seeds can be found at: 

https://bloomoutlet.com/seed-guides/ 

Please read both the seed guide and the plant specific sowing instructions. If you are unsure of the best way to germinate the seeds, DO NOT SOW ALL THE SEEDS. Keep some in case the germination method you use doesn’t work. 

Cold stratify ALL perennials, shrub & tree seeds for at least 30 days unless the plant specific instructions indicate a longer period. 

If you are not ready to plant the seeds, keep it in the refrigerator (not freezer). 

ALLIUM SPAEROCEPHALON | DRUMSTICK ALLIUM

Seed Treatment (Pre-Planting Preparation)

  1. Cold Stratification

    • Mix seeds with moist sand or peat moss in a plastic bag.

    • Store in the refrigerator at 35–40°F (1–4°C) for 6–8 weeks.

    • Check periodically to ensure moisture is maintained but avoid excess water.

  2. Soaking

    • Soak seeds in lukewarm water for 12 hours before sowing.

Planting Instructions

  • Best Planting Time: Fall or early spring (Fall is best for natural stratification).

  • Soil Requirements: Well-draining, light, sandy, or loamy soil with a pH of 6.0–7.5.

  • Sunlight: Full sun (at least 6 hours per day).

  • Planting Depth: ¼ inch (6 mm) deep, lightly covered with soil.

  • Spacing: 4–6 inches (10–15 cm) apart for proper growth.

  • Watering: Keep the soil evenly moist but not soggy until germination.

  • Temperature for Germination: 60–70°F (15–21°C) for best results.

  • Germination Time: 2–12 weeks (may take longer if direct-sown outdoors).

Care After Germination

  • Once seedlings develop 2-3 true leaves, thin them out if necessary.

  • Avoid overwatering to prevent fungal diseases.

  • Once mature, Allium sphaerocephalon is drought-tolerant and requires minimal care.

  • Plants may take 2–3 years to flower when grown from seed, as they first develop bulbs.

  • Allow seed heads to mature if you want self-seeding for naturalized growth.

? Drumstick Allium is a stunning pollinator-friendly perennial that attracts bees and butterflies while adding unique texture to garden borders! ??

 

Self seeds in the garden. 

USES: Cut flower, rock gardens, containers, flower borders, naturalized areas in small or large groupings, attracts pollinators. Excellent for drying.

Botanical Name: Allium spaerocephalon

Common Name: Drumstick Allium, Round-headed leek, Round-headed garlic

Type: Perennial

Flower Color: Egg shaped flower heads emerge deep green changing to purplish red from top to bottom

Flowering Season: July, August

Plant Height: 24-36 in (60-91 cm)

Plant Spread: 12-18 in (30-45 cm)

Light Requirements: Full Sun

Water Requirements: Average, Dry

Soil Requirements: Well-drained. Average, Sandy, Gritty, Loam, Rich

USDA Zones: 4-8

!