How to Sow Johnny Jump Up Viola Seeds in the UK 

Viola tricolor, commonly known as Johnny Jump Up, is a charming addition to any garden with its vibrant tri-coloured blooms. Featuring a striking combination of rich purple upper petals, yellow lower petals, and dark purple whiskers, these delightful flowers are not only visually appealing but also edible. They are perfect for decorating salads, drinks, and baked goods, making them a favourite among gardeners and chefs alike. These versatile plants thrive in UK gardens, pots, or window boxes, blooming from early summer through to autumn. 

When to Sow Johnny Jump Up Viola Seeds 

• Indoor Sowing: Start seeds indoors from late winter to early spring (February to April) for early blooms. 
• Outdoor Sowing: Sow seeds directly into the garden in late spring (May) after the last frost has passed and the ground is warm. 

Step-by-Step Guide to Sowing Johnny Jump Up Viola Seeds 

Indoor Sowing 

1. Prepare Containers: Use seed trays or small pots filled with a high-quality seed compost or fine potting mix. 
2. Sowing Depth: Sow seeds on the surface of the compost and cover lightly with a thin layer of fine soil or vermiculite. 
3. Optimal Germination Conditions: Place the trays in a cool, dark location or cover them with black polythene film to maintain darkness, which promotes germination. 
4. Temperature Requirements: Keep the compost at a consistent temperature of 15-20°C (59-68°F) for optimal germination. 
5. Watering: Mist the surface gently to keep the soil moist but not waterlogged. Avoid letting the compost dry out during the germination period. 
6. Germination Time: Seeds typically germinate within 10-14 days under ideal conditions. 

Outdoor Sowing 

1. Soil Preparation: Choose a well-draining site with full sun to partial shade. Enrich the soil with compost or organic matter to improve its structure and nutrient content. 
2. Sowing Seeds: Sprinkle the seeds thinly over the prepared soil and cover lightly with fine soil. 
3. Spacing: Thin seedlings to 6-8 inches (15-20 cm) apart once they emerge to allow for proper growth and air circulation. 
4. Watering: Water the area lightly after sowing and maintain consistent moisture until seedlings are established. 

Caring for Johnny Jump Up Viola Plants 

• Sunlight: Violas thrive in full sun to partial shade. Ensure they receive at least 4-6 hours of sunlight daily. 
• Watering: Water regularly, especially during dry spells, to keep the soil evenly moist but not waterlogged. 
• Feeding: Apply a balanced liquid fertiliser once a month during the growing season to encourage healthy growth and abundant blooms. 
• Deadheading: Remove spent flowers regularly to extend the blooming period and promote fresh blooms. 
• Winter Care: Although Johnny Jump Ups are hardy, mulch around the base of plants in late autumn to protect roots from frost in colder regions. 

Common Questions About Growing Johnny Jump Up Violas in the UK 

• Can Johnny Jump Up Violas grow in containers? Yes, they grow exceptionally well in containers, pots, or window boxes. Just ensure the pots have good drainage and are placed in a sunny or partially shaded location. 

• Do violas self-seed? Yes, Johnny Jump Ups are self-seeding and can naturalise in garden beds, providing blooms year after year with minimal effort. 

• How do I prevent diseases like mildew? Ensure good air circulation around the plants and avoid overhead watering. If mildew appears, treat with a fungicide and remove affected leaves promptly. 

By following these steps, you can enjoy the vibrant blooms and edible benefits of Johnny Jump Up Violas in your UK garden. Their hardy nature, ease of growth, and long blooming period make them a delightful addition to any outdoor or indoor space. 

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