Eschscholzia californica. The Thai Silk Formula is a special blend of California Poppies featuring semi-double flowers with fluted petals and a very agreeable silken appearance. The petite plants only grow to 20cm (8") tall, with their delicate looking flowers contrasting nicely against muted, grey-green foliage. The flowers themselves can be as wide as 8cm (3"), and they work well in patio containers, rock gardens, and flower beds. California poppies are drought resistant, so they are suitable for xeriscaping, and they're also deer resistant.
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.