Best Delphinium Flower Seeds of 2026

The Crown Pacific Delphinium Mix from Premier Seeds Direct is designed for optimal germination and growth. By cold-treating the seeds in your fridge, you can significantly enhance germination rates. Sowing the seeds thinly from May to August ensures they have enough space to thrive. Germination can take up to three weeks, so patience is key. Once the seedlings reach two inches, you can transplant them to larger pots, protecting them from slugs and snails. This careful approach leads to beautiful blooms in your garden.

The Delphinium Blue Bird Seeds from Premier Seeds Direct require careful sowing for optimal results. To enhance germination, you should cold-treat the seeds by placing the sealed packet in the fridge for a week or two. Sow them on fine, free-draining compost from February to June, lightly covering them with compost or vermiculite. For successful growth, maintain humidity by placing them in a propagator or clear bag, excluding light until seedlings appear. These steps will help you achieve beautiful blooms in your garden.

The Suttons Delphinium Seeds are perfect for enhancing your garden beds and borders. This vigorous-growing mixture, when sown early, will reward you with beautiful flowers in the same year. You can enjoy sturdy flower spikes in stunning shades of blue mauve, lilac pink, and white. Additionally, these seeds prefer full sun, ensuring that you can brighten up your outdoor space with minimal effort. With an average height of 81-90 cm, they are sure to make a striking impact in your garden.

Mr Fothergill's Delphinium Seeds are a delightful addition to any garden. This RHS Centurion Sky Blue variety can be sown from February to July, allowing you to plan your planting around your schedule. Expect beautiful blooms from June to September, providing a stunning display throughout the summer months. With approximately 20 seeds per packet, you have ample opportunity to create a vibrant floral arrangement. Each plant can reach a height of 150cm, making them perfect for adding vertical interest to your garden.

The Delphinium Magic Fountain Seeds from Premier Seeds Direct require cold treatment for optimal germination, which means placing the packet in your fridge for a week or two. You can sow the seeds from February to June on fine, well-draining compost, ensuring they are only lightly covered. For best results, use a propagator to maintain humidity and exclude light until seedlings appear. Once they are large enough, transplant them into pots and gradually acclimatise them to outdoor conditions after frost threats have passed.

The Delphinium Ajacis Mix Seeds from Plant World Seeds provides a vibrant display of flowers in various pastel colours, making it a delightful addition to your garden. Standing between 80cm and 1.4m tall, this plant is perfect for creating a stunning backdrop for other plants. With over 200 seeds per packet, you can easily achieve a beautiful group planting. These seeds thrive in loose, moderately rich soils and full sun, ensuring that your garden remains bright and cheerful throughout the blooming season from June to August.