Seed germination, sowing instructions for Arnica. Arnica chamissonis ssp. foliosa is easy to grow from seeds. These are very tiny seeds which should be mixed with finest sand for an even sowing. Do not cover, only press them in gently. Sow early spring indoors. Pot up the seedlings into individual pots as soon as the first true leaf appears and plant them out after the last expected frosts.
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