Giant Redwood Seeds
Natural Germination: Giant Redwood seeds typically germinate following fire, which clears the ground and exposes the soil to sun, aiding in germination. In a garden setting, mimic these conditions by sowing the seeds in a well-draining, sunny spot, preferably in early spring.
Artificial Stratification: For artificial germination, soak the seeds in water for 24 hours, then mix them with moist sand and store them in a refrigerator for 15-30 days. This process mimics the cold, moist conditions of winter. After stratification, plant the seeds in a light, well-draining soil mix, and maintain a consistent temperature of 18-22ยฐC.
Coast Redwood Seeds
Natural Germination: Coast Redwood seeds typically require exposure to light for germination. In their natural habitat, these seeds germinate following disturbances such as fire that create open, well-lit conditions. Plant the seeds shallowly in a location with ample sunlight, ideally in moist, well-drained soil.
Artificial Stratification: For artificial germination, soak the seeds in water for 24 hours to soften the seed coat. Then, place them on a moist paper towel, seal in a plastic bag, and refrigerate for about 30 days. This simulates the natural cold, moist conditions of winter. After stratification, sow the seeds on the surface of a well-draining soil mix and keep them at a temperature of 18-22ยฐC, ensuring they receive plenty of light.
Dawn Redwood Seeds
Natural Germination: Dawn Redwood seeds require a period of cold stratification to germinate, mimicking the winter conditions. Plant the seeds in a moist, well-drained soil mix and expose them to winter temperatures outdoors, or keep them in a cold frame or unheated greenhouse.
Artificial Stratification: For artificial germination, soak the seeds in water for 24 hours, then place them in moist sand or a damp paper towel. Seal them in a plastic bag and refrigerate for 60-90 days to simulate winter conditions. After stratification, sow the seeds on the surface of a well-draining soil mix and maintain a temperature of 18-22ยฐC with adequate lighting.