Zinnia Double Gorgeous large flower heads!
Zinnia Double This early flowering mix will create a fabulous display for either pots, containers or garden borders. The gorgeous large flower heads last well with good heat and drought tolerance and excellent disease resistance. These exciting annuals need little maintenance to put on a fabulous display.
✔ Gorgeous large flower heads
✔ Fabulous display for pots and containers
✔ Good heat and drought tolerance
Plant Class: Half Hardy Annual (HHA).
Zinnia Double Sow: outdoors, April to May, thinly 0.5cm ((¼in) deep in flowering position. Keep soil moist and weed free. Thin out allowing 30cm (12in) between plants.
Or, indoors March to May, in pots or trays of seed compost lightly cover the seed and keep moist. Maintain a gentle warmth, 18-20oC (55-68oF). Thin (prick out) to further pots when seedlings are large enough to handle. Gradually harden off before planting out to final position spacing 30cm(12in) apart. Avoid root disturbance as much as possible.
Flowers: July to September, remove deadheads to prolong flowering.
Zinnia Double You should really grow zinnia from seed, as they do not like to be transplanted as nursery plants and do not often thrive. From seed, they will grow very quickly in the right conditions.
- Do not seed until the last frost has passed.
- Choosing a location that gets full sun is essential. Zinnias can stand a minimum daytime temperature of 60 degrees F, and a range of 74 to 84 degrees F is preferred.
- Zinnias are adaptable, but the ideal soil is nice and fertile, humus-rich, and well-drained. Soil pH should be between 5.5 and 7.5. If soil is amended with compost, the flowers will grow more quickly. Learn more about soil amendments and preparing soil for planting.
- Sow zinnia seeds only ¼-inch deep.
- Space plants 4 to 24 inches apart, depending on variety. (Many common varieties are planted 6 inches apart within the row and 2 feet in between rows.) See back of seed package for variety-specific advice.
- You’ll see zinnia seedlings in only 4 to 7 days for most varieties.
- When seedlings reach three inches tall, thin them so that they’re 6 to 18 inches apart to maximize air circulation.
- Sow in succession for a longer flowering display.