Arnica - Arnica chamissonis
20 Seeds.
Sow May - July.
Hardy perennial.
Height 30-60cm (1-2ft) spread 15cm (6in).
Prefers sandy, acidic soil, rich in humus, and full sun.
Sprinkle the seeds lightly on prepared soil, then cover them lightly with sand or fine soil. Keep the soil slightly moist until the seeds germinate. Be patient; seeds usually sprout in about a month, but germination can take much longer. Thin the seedlings to allow about 12 inches (30 cm) between each plant. You can also start arnica seeds indoors. Plant the seeds in pots and keep them in bright, indirect sunlight where temperatures are maintained at approximately 55 F (13 C).
Transplant when seedlings are large enough to handle, prick off into pots or boxes and grow on until ready for planting out in September or October.
Oval, hairy, light green leaves form rosettes and large, single, scented, daisy-like golden yellow flowers, which appear all summer.
Poisonous if taken internally.