Lobelia Seeds 'Sapphire' - Unwins
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This guide is for gardeners looking to add vibrant blue color to containers, window boxes, and hanging baskets. The Unwins Lobelia Seeds 'Sapphire' offer a profusion of violet-blue blooms with a long flowering period, providing continuous color. A potential caveat is that consistent moisture is key for optimal germination and growth.
All features
| Model Part Number | 30210121 |
|---|---|
| Brand | Unwins |
Extended Product Information
FAQs
When is the best time to sow Lobelia Sapphire seeds?
Sow seeds indoors or in a greenhouse from February to April for best results. They can also be sown directly outdoors in late spring after the risk of frost has passed.
How deep should I plant the Lobelia Sapphire seeds?
Do not cover the seeds with compost. Sow them on the surface of the soil and gently press down, as they require light to germinate.
What kind of soil is best for Lobelia Sapphire?
Lobelia thrives in well-drained, reasonably fertile soil or compost. Good drainage is crucial to prevent waterlogging.
How often should I water my Lobelia Sapphire plants?
Keep the soil consistently moist, especially during warm weather. Water regularly, but avoid waterlogged conditions. Check the moisture level daily for plants in containers.
Can Lobelia Sapphire be grown in full sun?
Yes, Lobelia 'Sapphire' performs well in full sun to partial shade. In very hot climates, some afternoon shade can help prevent the soil from drying out too quickly.
How long does it take for Lobelia Sapphire seeds to germinate?
Germination typically takes 10 to 21 days, provided the conditions are warm (15-20°C) and the compost is kept consistently moist and exposed to light.
What should I do after the first flush of flowers fades?
You can lightly trim back the plants after the first main flush of flowers has faded. This encourages bushier growth and a second wave of blooming.
Troubleshooting
Seeds not germinating
Ensure seeds are receiving light, the compost is kept consistently moist, and the temperature is within the recommended range (15-20°C). Avoid covering seeds with compost.
Seedlings are leggy and weak
Provide more light and ensure they are not overcrowded. Cooler growing conditions after initial germination can also help produce sturdier seedlings.
Plants wilting despite watering
Check for adequate drainage. Lobelia prefers moist but not waterlogged conditions. Ensure the pot or ground has good drainage to prevent root rot.
Lack of blooms
Ensure plants are receiving adequate sunlight and are being fed regularly with a balanced liquid fertilizer. Remove spent flowers to encourage new buds.
Powdery mildew appears on leaves
Improve air circulation around the plants. Water at the base of the plant rather than overhead. Remove affected leaves and treat with an appropriate fungicide if the problem persists.
Pros and Cons
Pros
- Exceptional trailing habit for dramatic displays.
- Abundant, long-lasting violet-blue flowers.
- Suitable for a variety of small to medium containers.
- Enhances the visual appeal of hanging baskets and window boxes.
- Good value for creating large-scale floral arrangements from seed.
Cons
- Requires consistent moisture for best results.
- May be susceptible to mildew in very humid conditions.
- Germination can be slow if conditions are not optimal.
- Best results are seen with regular feeding during the growing season.
- Can be delicate in strong winds when in full bloom.
Setup, Compatibility & Care
Seed Starting: Sow seeds indoors or in a greenhouse on the surface of a good seed compost. Do not cover the seeds as they need light to germinate. Keep compost moist and maintain a temperature of 15-20°C (60-70°F). Germination typically takes 10-21 days.
Transplanting: Once seedlings are large enough to handle, prick them out into small pots or trays. Grow them on in cooler conditions before planting out after the risk of frost has passed. Harden off plants gradually for a week before transplanting.
Planting: Space plants 6-8 inches apart in well-drained soil or compost. Lobelia 'Sapphire' is compatible with most common bedding plants and annuals. It thrives in full sun to partial shade.
Care: Water regularly, especially during dry periods, to keep the compost moist. Avoid letting the plants dry out completely. Feed with a balanced liquid fertilizer every 2-4 weeks during the growing season to encourage continuous blooming. Deadhead spent blooms to promote further flowering and prevent self-seeding if unwanted.