Cactus Seed Sowing: Salad Container Method, Winter Timing, and 40°F Minimum

Container Setup

• Clear plastic salad container (8" diameter) with drainage holes.
• 50% soil + 50% sand.
• Seeds on surface; dusting of sand.
• Lid on = humidity chamber.
• Bottom water in tray.

Timing

Spring (lengthening days). Winter sowing = etiolation, fungus. Keep >40°F.

Germination & Beyond

• 30–45 days to sprout.
• Gradually vent lid.
• Transplant at 1 inch (see Article 11782).

Landscape tip: Buy mature plants for courtyard; seedlings take years.