Eschscholzia californica. Yukon Gold California Poppy was a show stopper in our summer seed trials. The fully double flowers have ruffled, two-tone petals that are rich orange at the centres and golden yellow at the edges. It has the very typical growth habit of standard California poppies, but the flowers are truly distinctive, and appear over a very long period from spring through summer. It would look spectacular planted en masse in any setting, but will also work in containers and conventional flower borders. Yukon Gold grows 38-60cm (15-25") tall.
Hardy Annual - it may overwinter in Zones 8-10
These hardy, but short-lived perennial plants are usually grown as annuals. Grows to 5–60 in (13–152 cm) tall, with alternately branching, glaucous, blue-green foliage. The leaves are divided into round, lobed segments. Blooms are solitary on long stems which are silky-textured each with four petals. Flower colours range from yellow to orange, flowering from early spring through to fall. The petals close at night or in the cold, windy weather and open again the following morning. Flowers will remain closed in cloudy weather as well. Continue reading below for tips on how to grow California poppies from seed.
Season & Zone
Exposure: Full sun
Zone: Hardy in Zone 8, but usually grown as an annual
Direct sow outdoors in spring after the local last frost date. Otherwise direct sow in autumn. It can be started indoors, but does not like being transplanted.
Sow seeds 5mm (¼”) deep, spaced 20-25cm (8-10″) apart. Seeds should sprout in 14-21 days.
Grow in any average, well-drained soil. Deadhead regularly to prevent self sowing. California poppies are very likely to self sow when conditions are favourable.