Calendula

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Calendula is used to prevent infections and heal injuries with antifungal and antimicrobial properties. Also known for anti-inflammatory uses it is popular for soothing skin conditions and muscle spasms.
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Historically regarded as the beauty herb it is very commonly used in all kinds of love spells. Other uses include protection, prosperity, marriage ceremonies, longevity, commitment, and consecration. Calendula is the original "loves me, loves me not..." flower.