Seed Propagation Guide: Bananas, Lithops, Olives & Norfolk Island Pine

Expert Tips for Tricky Seed Propagation

Successfully growing plants from seed often requires species-specific techniques. Here's a breakdown of propagation methods for four challenging plants: bananas, lithops, olives, and Norfolk Island pine.

Banana Seeds

Banana seeds benefit from a 48-hour soak in warm water before planting. Sow them 1 inch deep in rich potting soil and maintain consistently warm soil temperatures between 80-90°F. Keep the medium moist but not waterlogged. Patience is key—germination can take anywhere from a few weeks to six months, often occurring erratically.

Lithops (Living Stones)

Propagation methods vary by lithops species. A reliable approach is surface-sowing seeds on cactus mix; many species germinate within two weeks under warm, bright conditions. For detailed species-specific guidance, consult resources like CactusInfo.net's seedling guide.

Olive (Olea europaea)

Olives are typically propagated from cuttings due to notoriously low and unreliable seed germination. If attempting seeds, soak them for two weeks (changing cloudy water daily), then cold-stratify in a damp paper towel inside a sealed bag in the refrigerator for 60 days. Plant 1 inch deep in moist, warm soil afterward. Germination may take many months.

Norfolk Island Pine

This species is best grown from seed. Cuttings are difficult to root without commercial hormones, and side cuttings tend to grow horizontally rather than vertically. Seed propagation yields stronger, more natural growth habits.

Original Q&A format adapted from horticultural expert Tom.