Dahlia, Cactus Hybrids
Dahlia, Cactus Hybrids
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Dahlia ‘Cactus Mixed’
Standard pack: 25 seeds.
Produces large double blooms with slender, pointed petals that give that classic spiky cactus‑dahlia look. Vibrant, eye‑catching and full of movement, they make a stunning garden display and an excellent cut flower. Plants reach around 90–120cm tall and will flower generously through summer.
Growing dahlias from seed gives you the best of both worlds — an affordable first‑year display and the chance to lift and store your own tubers for planting again the following season. Each plant will produce its own unique tuber, making this a brilliant way to build a long‑lasting dahlia collection.
Key information
- Sow: February to March
- Germination: 7 - 21 days
- Blooms: July to October
- Height: to 90cm | Spread: to 45cm
- Perennial, often grown from seed as a half-hardy annual
- Full sun
For more information on growing dahlias, check out our growing guides.
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Growing Guides from Collie Flowers
You'll find a link to the specific growing guide for these seeds above, but if you want a more general look around and to find some advice, all of our sowing and growing information is available for you to use and refer to as you grow your garden.
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