Vinca Plant Seeds:
Guide to Storing, Sowing and Germination

Vinca plants, also known as periwinkle or Madagascar periwinkle, are popular garden plants that are beloved for their vibrant flowers and low maintenance requirements. These plants can be easily grown from seeds, making them a great choice for beginner gardeners. In this article, we will provide a comprehensive guide on how to store, sow, and germinate vinca plant seeds successfully.

Storing Vinca Plant Seeds

If you have harvested vinca plant seeds from your own garden or purchased them from a reputable supplier, proper storage is essential to ensure their viability. Here are the steps to follow when storing vinca plant seeds:

1. Drying: After harvesting the seeds, spread them out in a single layer on a paper towel or a clean, dry surface. Allow them to dry naturally for about a week. Make sure they are completely dry before moving on to the next step.

2. Containers: Once the seeds are dry, transfer them to airtight containers such as glass jars or resealable plastic bags. Make sure the containers are clean and dry before adding the seeds.

3. Labeling: It is crucial to label the containers with the date of collection and the variety of vinca plant seeds stored. This will help you keep track of their age and ensure you use them within their viable period.

4. Storage: Store the containers in a cool, dark place such as a basement or refrigerator. The ideal temperature for storing vinca plant seeds is around 40-50°F (4-10°C). Avoid exposing them to direct sunlight or extreme temperature fluctuations.

By following these steps, your vinca plant seeds can remain viable for up to two years.

Sowing Vinca Plant Seeds

When it comes to sowing vinca plant seeds, timing is important. These seeds are typically sown indoors about 10-12 weeks prior to the last expected frost in your area. Here’s a step-by-step guide to sowing vinca plant seeds:

1. Seed Starting Mix: Fill seed trays or pots with a well-draining seed starting mix. Avoid using regular garden soil, as it may not provide the optimal conditions for germination.

2. Moistening the Mix: Moisten the seed starting mix before sowing the seeds. The mix should be damp but not overly wet.

3. Sowing Depth: Place two to three vinca plant seeds onto the surface of the seed starting mix in each container, spacing them evenly. Lightly press the seeds into the mix, ensuring they are covered by a thin layer of soil. The recommended sowing depth is about 1/4 inch (6 mm).

4. Watering: Gently water the containers from below by placing them in a tray of water and allowing the mix to absorb moisture. Avoid watering from above, as it may dislodge the seeds or cause them to rot.

5. Covering and Labeling: Cover the containers with plastic wrap or place them in a propagator to create a humid environment. This will help retain moisture and promote germination. Don’t forget to label each container with the date and variety of vinca plant seeds sown.

6. Germination Period: Vinca plant seeds typically germinate within 10-14 days when kept at a temperature of around 70-75°F (21-24°C). Check the containers regularly for signs of germination.

Germinating Vinca Plant Seeds

Once your vinca plant seeds have germinated, it is important to provide them with appropriate care to ensure healthy growth. Here are some tips for successfully germinating vinca plant seeds:

1. Lighting: After germination, move the containers to a bright location where the seedlings can receive at least 6-8 hours of sunlight each day. If natural light is limited, you can use fluorescent lights or grow lights to provide adequate illumination.

2. Temperature: Maintain a temperature of around 65-75°F (18-24°C) during the day and slightly cooler temperatures at night. Avoid exposing the seedlings to extreme temperature fluctuations, as it can stunt their growth.

3. Watering: Keep the soil evenly moist but not waterlogged. Check the moisture level regularly and water when the top inch of soil feels dry.

4. Transplanting: Once the seedlings have developed their second set of true leaves, they can be transplanted into individual pots or directly into the garden. Make sure to harden off the seedlings by gradually exposing them to outdoor conditions before transplanting.

By following these guidelines, you can successfully store, sow, and germinate vinca plant seeds, and enjoy the beauty of these colorful flowers in your garden. Happy gardening!