Zinnia 'Super cactus' mix

120 Seeds

Seeding Zinnia 'Super Cactus' Mix — a Zinnia elegans variety — is a great way to grow large, shaggy, cactus-flowered blooms in bold colors. These zinnias are heat-tolerant, fast-growing, and excellent for cutting gardens.

Here’s your complete seeding guide:

🌸 Zinnia 'Super Cactus' Mix – Seeding Guide

📅 When to Sow

Indoors (for earlier blooms):

• Start 4–6 weeks before last frost

  • Example: If last frost is mid-May, sow indoors late March to early April

Outdoors (direct sow – easy method):

• After last frost, when soil is at least 60°F (16°C)

• Zinnias transplant well but also grow great from direct sowing

🌱 How to Sow

Soil & Location

• Choose a full sun site (6–8+ hours/day)

• Use well-draining, moderately fertile soil

• Avoid very rich soil or heavy nitrogen (can cause leggy plants)

Sowing Instructions

• Depth: Sow seeds ¼ inch (6 mm) deep

• Spacing: Sow 2–3 inches apart, then thin to 12–18 inches apart
  (Super Cactus zinnias are tall, often 30–40 inches)

🌡️ Germination

• Temperature: 70–75°F (21–24°C)

• Time: 5–10 days

🌿 After Germination

• Thin or transplant when seedlings are 2–3 inches tall

• Harden off indoor seedlings before planting outdoors

🌼 Bloom Time

• Blooms in 60–75 days from sowing

• Continuous flowering from summer to frost

✂️ Care & Maintenance

• Deadhead regularly to keep flowers coming

• Water at soil level to avoid mildew

• Stake tall plants if they’re in windy areas

• Great for cut flowers — long-lasting and bold

• Pinch back early growth to encourage branching

🐝 Bonus

• Attracts bees, butterflies, and hummingbirds

• Deer-resistant