How to Sow Giant Zinnia Dahlia Seeds
One the brightest flowers to grow, due to their stunning multi coloured pastel blooms. Once fully grown, giant zinnia dahlia will produce 4 to 5 inch in diameter yellow, red, coral, crimson, scarlet, purple, orange, and white flowers. Stems will reach a maximum length of 4 feet, which makes them a great cut flower for displays and vases. Petals are bright & glossy, creating a compact ball which is perfect for pots, trays, containers and borders. Seedlings will reach adult stages after approximately 60 days.
Grow Giant Zinnia Dahlia Plants from Seed
- Best when sown indoors. If growing outdoors, wait until the ground is not due to be frozen again. The perfect outdoor sowing period is from April-September.
- Ideal sowing temperatures are between 20-27 degrees celsius. Sow approximately 1/8″ deep in fresh compost, ensuring the compost is moist and well worked.
- Place in an area which receives full sunlight & is warm. Behind glass is ideal, where temperatures can be easily controlled. Germination will take between 7-14 days. Ensure the compost is kept relatively moist, but do not over water.
- Once stems reach a length of 2″ they can be handled safely. After this point, the plants will grow on in much cooler conditions outdoors.
- For a more bush like plant, pinch back early stem heads. Allow to grow normally for long stem giant zinnia dahlia. Feeding plants using a liquid feed once a month, will enhance growth and bloom colours.