Thompson & Morgan Cornflower Dwarf Jubilee Gem - 150 Seeds
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This guide is for gardeners seeking to add vibrant color and attract pollinators to their gardens with ease. The Thompson & Morgan Cornflower Dwarf 'Jubilee Gem' offers striking violet-blue double blooms from late spring to early autumn, perfect for borders, cottage gardens, or cut flower arrangements. A potential caveat is the need for consistent watering, especially during dry spells, to ensure optimal growth and flowering. This product includes 150 seeds of a hardy annual dwarf cornflower, known for its compact, bushy foliage and eye-catching blooms.
All features
| Model Part Number | 24099 |
|---|---|
| Brand | Thompson & Morgan |
Extended Product Information
FAQs
How long does it take for the seeds to germinate?
Germination typically takes 14 to 21 days when sown under suitable conditions.
What is the mature height and spread of this cornflower?
The 'Jubilee Gem' cornflower reaches up to 40cm (15.7 inches) in height and spreads up to 30cm (11.8 inches) when fully established.
Can I eat the cornflower petals?
Yes, the petals are edible and can be used as a colorful garnish for salads, omelets, or pasta dishes.
When is the best time to sow the seeds outdoors?
For outdoor sowing, the best time is from March to April, directly where you want them to grow.
What kind of soil do these cornflowers prefer?
They prefer well-drained soil. Ensure the soil is not waterlogged.
Do I need to protect the plants over winter?
As a hardy annual, they typically complete their life cycle in one season. However, if you start them indoors for early flowering, they will need to be overwintered in cool, light, frost-free conditions before planting out in spring.
How many seeds are in a packet?
Each packet contains approximately 150 seeds.
Troubleshooting
Seeds not germinating
Ensure seeds are sown at the correct depth (3mm), are receiving adequate moisture, and are planted in a suitable location (full sun). For indoor sowing, verify temperature is within the 18-23°C range.
Seedlings are leggy or weak
This can be due to insufficient light. Ensure the sowing location receives adequate sunlight. If grown indoors, move to a brighter spot. Thinning seedlings also encourages stronger growth.
Poor flowering or small blooms
Check that the plant is receiving enough sunlight and water. Overcrowding can also lead to reduced flowering; ensure plants are thinned to the recommended spacing.
Pest infestation (e.g., aphids)
Inspect plants regularly. Aphids can often be washed off with a strong jet of water or treated with insecticidal soap. Encourage natural predators by maintaining a healthy garden environment.
Pros and Cons
Pros
- Produces exceptionally large, double violet-blue blooms.
- Attracts beneficial pollinators like bees.
- Compact size is well-suited for borders and containers.
- Edible petals offer a unique culinary use.
- Hardy annual nature ensures relatively easy cultivation.
Cons
- Requires consistent watering, especially in dry conditions.
- Results may vary depending on specific growing conditions.
- Images are for guidance only and may not perfectly represent mature plants.
- May require overwintering if started indoors for early flowering in subsequent years.
Setup, Compatibility & Care
Sowing Outdoors: Sow seeds outdoors directly where they are to grow, from March to April. Prepare a sunny spot with well-drained soil, raked to a fine tilth. Sow seeds thinly, 3mm (1/8") deep, in drills spaced 30cm (12") apart. Water the area regularly, especially during dry periods. Germination typically occurs within 14-21 days. Once seedlings are large enough to handle, thin them to 15cm (6") apart.
Sowing Indoors (for early flowering): For earlier blooms the following year, sow indoors from August to September. Use a good quality seed compost and sow on the surface, covering with a very fine layer of compost or vermiculite; ensure light is not excluded as it aids germination. Maintain a temperature of 18-23°C (65-73°F). Transplant seedlings once they are large enough to handle into cooler conditions. Overwinter these plants in a frost-free, light location before planting them outdoors in the spring.
Position: Full sun is required for best results.
Soil: Well-drained soil is essential.
Watering: Water regularly, particularly during dry spells, to maintain consistent moisture levels.
Compatibility: Generally compatible with most garden settings, including borders, beds, wildlife gardens, and containers. It is a hardy annual.