hosta plants, hosta seeds flower seeds ? How to Grow Hosta Seeds – Step-by-Step Guide 1. Seed Preparation Cold stratify the seeds by placing them in the refrigerator for 2–4 weeks. This mimics winter and improves germination, especially for certain varieties. Not all Hosta seeds need this, but it helps boost success rates. 2. Soil Mix Use a well-draining, light seed-starting mix: Peat moss + perlite or coco coir blend Ideal soil pH: 6.0 to 7.0 (slightly acidic to neutral) 3. Sowing the Seeds Sprinkle seeds on top of the moist soil surface. Gently press them in but do not bury them deeply — Hosta seeds need light to germinate. Optionally, cover lightly with vermiculite or clear plastic to maintain humidity. 4. Light Temperature Place in a bright, warm location out of direct sun. Use a grow light if indoors. Ideal temperature: 65–75F (18–24C) 5. Watering Keep the soil consistently moist but not soggy. Mist with a spray bottle to avoid disturbing the seeds. 6. Germination Time Seeds typically germinate within 10–21 days. Once seedlings have 2–3 true leaves, transplant them into small pots. 7. Transplanting Outdoors Move to a shady or partially shaded garden area. Hosta thrives in moist, rich, well-drained soil. Avoid hot, sunny spots as the leaves may scorch.