Grow Giant Sunflowers in your Garden this year with Sunflower Russian Giant from Thompson & Morgan. These huge plants will grow from one small Sunflower Seed in just one season! What better way to get youngsters involved in gardening too that to let them Grow Their Own Sunflower plant; they are so easy to germinate, grow and plant outside that Children love them, especially as they quickly outgrow us all! Sow early spring to early summer outdoors where they are to flower. Prepare the ground well and rake to a fine tilth before sowing. Sow 12mm (0.5in) deep in rows 45cm (18in) apart.For really giant sunflowers, sow them indoors in late winter/early spring, individually in 7.5cm (3in) pots at a temperature of 15-18C (60-65F). Grow on in good light conditions, harden off and plant out when all risk of frost has passed. Sow: March to May Position: Full Sun Flower: July to September Height: 300cm Average contents: 60seeds per pack Images shown are for guidance only of the expected results from plants upon maturity. Different growing condition might vary results. Image may be included for illustration of supply, but can vary due to seasonality changes (e.g. deciduous plants lose leaves in colder months).