Picta Doubles Mixed Gaillardia Seeds 5245. Gaillardia pulchella is a parent of ‘G. grandiflora x hybrida’. A fully double mixture with well-rounded flower heads that can grow up to 12.5 cm (5″) across. Plants grow to 40 cm (16″) in height and produce bold, brightly coloured flowers from summer through to early autumn. This gaillardia is a variable short lived perennial noted to be hardy to Zone 5 – we suggest though that it is best treated as an annual. Plants may self sow but it is not invasive.
How to Grow
600 seed/gram. Best directly sown outdoors in a sunny site. Sow seed 6 mm (1/4″) deep from mid-May to early June. Thin established plants to 20-30 cm (8-12″) apart. For earlier flowering, seed can be started indoors in a soil-less mix 4-6 weeks before planting out. Sow seed at 6 mm (1/4″) and at a temperature of 20 C, (68 F) they will germinate in 7-14 days – grow on under lights at a cooler temperature of 14 C (58 F) before hardening off and transplanting to a sunny site in the garden after the danger of frost has passed.