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Spiderwort Plant Seeds:
Guide to Storing, Sowing and Germination

Updated: July 23, 2023

Spiderwort plants, also known as Tradescantia, are a popular choice for gardeners due to their vibrant flowers and easy maintenance. If you’re looking to propagate these beautiful plants, understanding the process of storing, sowing, and germinating spiderwort seeds is essential. In this guide, we will walk you through each step to help you achieve success in growing your own spiderwort plants.

Storing Spiderwort Seeds

Storing spiderwort seeds properly is crucial for maintaining their viability. Here are some steps you can follow:

  1. Harvesting Seeds: Wait until the spiderwort flowers have faded and the seed pods have turned brown and dried out. Gently remove the seed pods from the plant using clean gardening shears or scissors.

  2. Drying Seeds: Once you have collected the seed pods, place them on a clean paper towel in a well-ventilated area. Allow the seed pods to dry completely for about one week or until they easily split open.

  3. Extracting Seeds: Once the seed pods have dried, gently break them open using your fingers or a small tool. Inside, you will find small black seeds. Separate the seeds from any remaining chaff or debris.

  4. Cleaning Seeds: To ensure optimal germination rates, it is important to remove any debris or chaff from the seeds. You can do this by gently blowing on them or using a fine-mesh sieve to sift out unwanted particles.

  5. Storage Containers: Transfer the clean spiderwort seeds into airtight containers such as glass jars or resealable plastic bags. Make sure to label each container with the date of collection and the plant variety to avoid confusion later on.

  6. Storage Conditions: Store the containers in a cool, dry place away from direct sunlight. A temperature range of 40-50°F (4-10°C) is ideal for preserving seed viability. Avoid storing seeds in areas with high humidity, as excess moisture can cause them to mold or rot.

By following these steps, you can effectively store spiderwort seeds for up to three years while maintaining their viability.

Sowing Spiderwort Seeds

Once you’re ready to sow your stored spiderwort seeds, here’s how you can go about it:

  1. Choosing the Right Time: Spiderwort seeds are best sown in early spring after the last frost when the soil has warmed up. This will provide optimal growing conditions for the seeds.

  2. Preparing the Soil: Spiderwort plants thrive in well-draining soil with a slightly acidic pH level between 6.0 and 7.0. Before sowing the seeds, prepare the soil by removing any weeds, rocks, or debris and add organic matter such as compost to improve its fertility.

  3. Sowing Depth: Spiderwort seeds are small and should be sown at a shallow depth of about 1/8 inch (3 mm). Gently press the seeds into the soil but avoid burying them too deep.

  4. Spacing: Spiderwort plants require sufficient space to grow and spread. Leave a gap of at least 12-18 inches (30-45 cm) between each seed to allow for proper air circulation and prevent overcrowding.

  5. Watering: After sowing the seeds, water the soil gently using a watering can or a fine mist spray bottle. Keep the soil moist but not saturated throughout the germination process.

  6. Germination Time: Spiderwort seeds typically germinate within 2-3 weeks, although it may vary depending on the variety and growing conditions. During this time, maintain consistent moisture levels in the soil to support germination.

Germinating Spiderwort Seeds

Germination is the crucial stage where spiderwort seeds transform into seedlings. Here are some tips to ensure successful germination:

  1. Light Requirements: Spiderwort seeds require exposure to light for successful germination. Avoid covering the seeds with soil, as they need direct contact with light to trigger germination.

  2. Temperature: Maintaining a consistent temperature range around 70-80°F (21-27°C) promotes optimal germination rates. Consider using a heating mat or placing the seed trays in a warm location to maintain the desired temperature.

  3. Thinning Seedlings: Once the seedlings emerge, thin them out if they appear crowded. This will allow the remaining seedlings to receive adequate light and nutrients for healthy growth.

  4. Transplanting: When the seedlings have developed their second or third set of true leaves, they are ready for transplanting into larger pots or the garden. Choose a location with well-drained soil and partial shade for optimal growth.

  5. Regular Care: Provide regular watering, but avoid overwatering, as it can lead to root rot. Apply a balanced fertilizer every 4-6 weeks to promote healthy growth and vibrant blooms.

By following these steps, you can successfully store, sow, and germinate spiderwort seeds, allowing you to grow these stunning plants in your own garden.

Remember, gardening is a process of patience and care. Enjoy the journey and watch as your spiderwort seeds transform into beautiful plants that add color and charm to your outdoor space.