Helianthus annuus
Double and semi-double blooms in a mixture of reds, lemon, and red bi-colours. Branching plants produce multiple blooms. Pollen free.
Sow – Indoors, April OR Direct Outdoors, May | Bloom – Summer |
Location – Full Sun | Mature Height – 2m/6.5ft |
Emergence – 7 to 10 days | Lifecycle – Annual |
Difficulty – Easy | Approx. 15 seeds per packet |
How to Grow:
Start seeds outdoors mid-May in a sunny site with good drainage. Sow seeds 6-12mm (1/4-1/2in) deep and 8-10cm (3-4in) apart. Thin or transplant to 30-45cm (12-18in) apart after germination. Seeds can also be started indoors 2-3 weeks earlier using plant-able peat pots at 21°C (70°F). Keep plants evenly watered and fertilize twice during the season.