Saxifraga cotyledon | Pyramidal Saxifrage

Seed Treatment – Stratification (Recommended): To break dormancy and enhance germination, follow this two-phase stratification process: <ol> <li aria-level="1">Warm Stratification • Mix seeds with moist sand, vermiculite, or paper towel • Place in a sealed plastic bag or container • Keep at 64–72°F (18–22°C) for 2–4 weeks • Maintain light moisture — not wet </li> <li aria-level="1">Cold Stratification • After warm strat, move seeds to refrigeration at 35–39°F (2–4°C) • Continue in moist medium for 4–6 weeks</li> </ol> When to Sow: • Sow seeds immediately after stratification, either indoors or in a cold frame • Alternatively, sow outdoors in fall for natural stratification Sowing Instructions: • Surface sow – do not cover; seeds require light to germinate • Gently press seeds into the surface of moist, well-draining soil • Ideal soil temperature: 41–54°F (5–12°C) • Use a fine mist spray to keep moist but avoid disturbing the seeds • Germination may take 3–6 weeks Light Requirements: • Prefers partial shade or morning sun • Avoid intense afternoon heat, especially in summer Soil Requirements: • Requires well-draining, gritty or alpine soil • Ideal for rock gardens, troughs, or crevices • pH: 6.0–7.5 Spacing: • Transplant seedlings when large enough to handle • Space 6–8 inches (15–20 cm) apart Watering: • Water lightly and consistently during germination • Reduce watering once seedlings are established • Avoid overwatering — these plants are prone to rot in wet soil Growing Tips: • Forms compact rosettes with tall white pyramidal flower spikes • Flowers after a few years (monocarpic — may die after flowering but offsets can continue growth) • Hardy in USDA Zones 5–8 • Best grown in cool, alpine-style environments with good air circulation