Periwinkle Plant Seeds:
Guide to Storing, Sowing and Germination

Periwinkle plants, also known as Vinca minor, are popular choices for gardeners due to their beautiful flowers and low maintenance requirements. These plants can be easily propagated from seeds, making it a cost-effective way to expand your garden. In this article, we will provide a comprehensive guide on storing, sowing, and germinating periwinkle plant seeds.

Storing Periwinkle Plant Seeds

Before we dive into the process of sowing and germinating periwinkle plant seeds, it is important to understand how to properly store them. Periwinkle seeds have a relatively short storage life, so it is crucial to store them correctly to ensure their viability.

When collecting periwinkle seeds, it is recommended to harvest them from mature plants during the late summer or early fall when the seed pods are dry and brown. To collect the seeds, simply remove the seed pods from the plant and allow them to dry further in a cool, dry place for about two weeks.

Once the seeds are fully dry, store them in an airtight container such as a glass jar or a sealed plastic bag. Place the container in a cool and dark location like a refrigerator or a cellar. Properly stored periwinkle seeds can remain viable for up to two years.

Sowing Periwinkle Plant Seeds

Now that you have properly stored periwinkle plant seeds, it’s time to sow them. Periwinkles can be sown both indoors and outdoors depending on your preference and the growing season in your region.

Indoor Sowing

If you want to get a head start on your periwinkle plants or live in an area with a short growing season, indoor sowing is the way to go. Follow these steps to successfully sow periwinkle plant seeds indoors:

1. Fill a seed tray or small pots with a well-draining potting mix. Moisten the mix before sowing the seeds.

2. Sprinkle the periwinkle seeds evenly on the surface of the soil, ensuring that they are not too close together.

3. Lightly press the seeds into the soil, but do not cover them completely as they require light to germinate.

4. Place a clear plastic cover or a plastic bag over the tray or pots to create a greenhouse-like environment. This helps to retain moisture and warmth.

5. Put the tray or pots in a warm location with indirect sunlight, ideally around 70°F (21°C). A heating mat can be used to maintain a consistent temperature if needed.

6. Mist the soil regularly to keep it evenly moist, but avoid overwatering as this can lead to fungal diseases.

7. Germination should occur within 14 to 21 days. Once the seedlings have developed their second set of true leaves, they can be transplanted into individual pots or moved outdoors.

Outdoor Sowing

If you prefer to sow periwinkle plant seeds directly in your garden, follow these steps:

1. Prepare the planting area by removing any weeds and loosening the soil with a garden fork or tiller.

2. Moisten the soil lightly before sowing the seeds.

3. Sprinkle the periwinkle seeds evenly over the prepared soil, again ensuring that they are not too close together.

4. Lightly press the seeds into the soil, but do not cover them completely.

5. Water the area gently after sowing, ensuring that the soil remains moist but not waterlogged during germination.

6. Keep an eye on the weather forecast and protect the newly sown area from heavy rain or strong winds if necessary.

7. Germination should occur within 14 to 21 days, depending on soil temperature and moisture levels.

Germinating Periwinkle Plant Seeds

Germinating periwinkle plant seeds requires specific conditions to ensure successful growth. Here are some key factors to consider when germinating periwinkle seeds:

• Temperature: Periwinkle seeds germinate best at temperatures between 65°F to 75°F (18°C to 24°C). Providing a consistent temperature within this range will promote quicker and more uniform germination.

• Light: Periwinkle seeds require light to germinate, so avoid burying them too deep in the soil. Simply press them lightly into the surface of the soil, allowing them to receive adequate light for germination.

• Moisture: Keep the soil moist during the germination process, but be careful not to overwater as this can lead to rotting or fungal diseases. Mist the soil regularly or use a gentle watering can to keep the soil evenly moist.

• Transplanting: Once the periwinkle seedlings have developed their second set of true leaves, they can be transplanted into individual pots or directly into your garden. When transplanting, handle the seedlings delicately to avoid damaging their fragile roots.

By following these guidelines for storing, sowing, and germinating periwinkle plant seeds, you can enjoy a beautiful display of these vibrant flowers in your garden. Whether you choose indoor or outdoor sowing, periwinkles are relatively easy to grow and will reward you with their charming blooms year after year.