Dahlia Coltness Mix Seeds

Dahlia Coltness Mixed Seeds – Dahlia variabilis

Dahlia Coltness seeds produce cheerful, semi-double blooms in a vibrant mix of bright colours, including red, yellow, orange, pink, and white. These early-flowering dahlias grow on bushy plants reaching around 60cm tall, bringing lively, long-lasting colour to summer borders. 

A reliable performer that's easy to grow from seed, Coltness Dahlias thrive in sunny spots and are ideal for both formal displays and relaxed cottage-style planting. Their sturdy stems and vivid blooms make them excellent for cut flower arrangements. With their generous flowering season and wide colour range, Dahlia Coltness is a favourite for creating eye-catching garden displays with minimal effort.

Key Features:

Botanical name: Dahlia variabilis

Vibrant mix of colours – semi-double blooms in warm, summery shades

Early to flower and continues blooming into late summer

Height to 60cm – bushy, upright habit

Perfect for borders, bedding schemes, and cut flower gardens

Easy to grow from seed – ideal for gardeners of all levels

Great for pollinators and long-lasting summer displays

Sowing & Growing Instructions:

Sow indoors in trays or modules from February onwards

Transplant outdoors in late spring/early summer once seedlings are hardened off and all frost risk has passed

Choose a sunny, well-drained site with fertile soil

Water regularly and feed during the flowering season to encourage strong growth and continuous blooms

Deadhead spent flowers to promote prolonged flowering throughout summer