How to Grow Coast Redwood Bonsai From Seeds

Written by charmayne smith
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How to Grow Coast Redwood Bonsai From Seeds
The wood of the coast redwood comes in hues of red, from very bright to rich dark colours. (Ryan McVay/Lifesize/Getty Images)

The coast redwood bonsai is a fast-growing sequoia tree that begins to bear seeds around its fifth year. Averaging about 6 feet in growth each year, the coast redwood is one of the fasted growing trees in the world. The germination of seeds to sprout is relatively low for the coast redwood. Still, with the proper care and attention, you can grow a coast redwood bonsai from seed in no time.

Skill level:
Moderately Challenging

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Things you need

  • Pruning shears
  • Potting container
  • Seedling container
  • Potting soil
  • Sand
  • Organic compost

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Instructions

  1. 1

    Gather at least 10 coast redwood seeds for planting, since it is likely that only one in five will form into quality sprouts. Choose seeds from older trees that are at least 20 years old to improve your germination success rate.

  2. 2

    Soak the seeds for one full day prior to planting them. Place them in an container with tepid water, and do not cover the container.

  3. 3

    Fill a well-drained seedling container with nutrient rich potting soil that is high in mineral content. Irrigate the filled container thoroughly, and place the seeds just under the soil's surface. Do not push the seeds far below the surface.

  4. 4

    Place the seedling container in a warm, sunny location that has good air circulation. Allow the seedling a few weeks to develop sprouts. Water the seedlings regularly to maintain an evenly moist, but not saturated, soil environment. Be patient because the germination process may take some time.

  5. 5

    Allow the sprouting coast redwood to remain in its container throughout the first growing season and for at least six months. Keep the container free of dust and debris. Continue to irrigate the redwood regularly to maintain a moist environment.

  6. 6

    Repot the developing coast redwood bonsai during the follow spring. Select a well-drained container with a depth slightly deeper than the thickness of the redwood's trunk. Choose a container with several drainage holes, as opposed to one, to provide increased drainage capabilities.

  7. 7

    Secure fine, wire mesh over each of the container's drainage holes. Combine equal amounts nutrient rich potting soil, coarse sand and organic compost such as leaf mould or pine bark. Incorporate the materials thoroughly and fill one-third of the container with the mixture.

  8. 8

    Remove your coast redwood from its container and gently crumble the excess soil from the root mass. Comb out the roots gently with your fingers while inspecting the roots from wilt. Trim away any deadened or wilted roots with sterile shears, and centre the redwood in the container. Fill the container the rest of the way with the soil mixture.

  9. 9

    Remove any dead or damaged branches with sharp, sterile shears. Trim back vigorously growing branches to develop shape. Develop the shape of your coast redwood bonsai gradually, over the course of several growing seasons.

  10. 10

    Irrigate your coast redwood deeply after repotting and pruning with tepid water. Pour the water until the excess water flows from the drainage holes. Check the soil's moisture levels daily, and irrigate the redwood when the soil begins to feel dry. Never allow the soil to dry completely.

  11. 11

    Place your coast redwood bonsai in a warm, sunny location that receives at least eight to 10 hours of full, daily sunlight. Keep it away from areas with constant temperature variations, such as heating vents, patio grills and air conditioners.

  12. 12

    Repot the growing redwood every one to two years, as it becomes root bound. Trim away about a third of the root system during the repotting process. Repot the bonsai in a clean container with a fresh soil mixture.

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