Viola cornuta (Horned Violet)

Seed Treatment:

Cold Stratification: Place seeds in a sealed plastic bag with a slightly damp paper towel and refrigerate for 2–4 weeks

If seedlings emerge during stratification, remove them immediately and plant in moist soil.

Best Time to Sow:
Late summer to early fall (outdoors) or late winter to early spring (indoors).

Optimum Temperature (Day/Night):
60–65°F (16–18°C) — keep temperature steady for best results.

Germination Time: 14-42 days

Sowing Instructions:

  • Use a fine, well-draining seed-starting mix.
  • Sow on the surface and press gently — do not cover heavily; a light dusting of vermiculite is optional.
  • Mist to moisten the surface. Keep consistently damp but not soggy.
  • Cover with a humidity dome or plastic wrap.
  • Place in darkness until germination begins (you can use newspaper or cardboard to block light).

Light Requirements (After Germination):
Transfer to bright, indirect light after sprouts appear. Avoid intense direct sunlight during early stages.

Watering Tips:
Water gently from below or use a fine mister to prevent displacing seeds. Avoid overwatering.

Post-Germination Care:

  • Transplant or thin seedlings once they have at least 2–3 true leaves.
  • Harden off for 7–10 days before moving outdoors.

Transplanting Outdoors:
Plant after frost danger passes. Space 6–8 in (15–20 cm) apart in rich, well-drained soil.

Bloom Time:
Spring to early summer. May rebloom in cooler fall weather with proper care.