Lobelia Seeds 'Sapphire' - Unwins

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.

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.

Lobelia thrives in well-drained, reasonably fertile soil or compost. Good drainage is crucial to prevent waterlogging.

Keep the soil consistently moist, especially during warm weather. Water regularly, but avoid waterlogged conditions. Check the moisture level daily for plants in containers.

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.

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.

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.

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.

Provide more light and ensure they are not overcrowded. Cooler growing conditions after initial germination can also help produce sturdier seedlings.

Check for adequate drainage. Lobelia prefers moist but not waterlogged conditions. Ensure the pot or ground has good drainage to prevent root rot.

Ensure plants are receiving adequate sunlight and are being fed regularly with a balanced liquid fertilizer. Remove spent flowers to encourage new buds.

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.