Alcea rosea (Hollyhock)

Seed Treatment (Pre-Planting Preparation)

  1. Scarification

    • Gently rub seeds with sandpaper or nick them with a sharp knife to help water penetrate the seed coat.

  2. Soaking

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

  3. Cold Stratification

    • Place seeds in a moist paper towel inside a sealed plastic bag and refrigerate for 2–3 weeks before planting.

Planting Instructions

  • Best Planting Time: Spring (after last frost) or late summer/early fall for next-year blooms.

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

  • Sunlight: Full sun (at least 6–8 hours per day).

  • Planting Depth: Lightly cover seeds with ¼ inch (6 mm) of soil.

  • Spacing: 12–24 inches (30–60 cm) apart for proper air circulation and growth.

  • Watering: Keep soil moist but not waterlogged until germination occurs.

  • Temperature: 65–75°F (18–24°C) for optimal germination.

  • Germination Time: 10–21 days under ideal conditions.

Care After Germination

  • Once seedlings develop two sets of true leaves, thin them out to avoid overcrowding.

  • Provide a support stake for tall varieties to prevent bending.

  • Mulch around plants to retain moisture and suppress weeds.

  • Water deeply once a week, avoiding wetting the leaves to prevent rust disease.

  • Deadhead spent flowers to encourage more blooms.

  • If growing in colder regions, cut back plants in late fall and apply mulch to protect roots over winter.

? Alcea rosea, or hollyhock, is a beautiful biennial/perennial that attracts bees, butterflies, and hummingbirds, making it a perfect cottage garden flower! ??

 

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