Kalm’s St. John’s Wort (Hypericum kalmianum) features golden-yellow flowers and green foliage. It grows just 2 – 3 feet tall, so it’s an ideal choice for smaller yards. Kalm’s St. John’s Wort is hardy in Zones 4 – 7.
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Kalm’s St. John’s Wort (Hypericum kalmianum) features golden-yellow flowers and green foliage. It grows just 2 – 3 feet tall, so it’s an ideal choice for smaller yards. Kalm’s St. John’s Wort is hardy in Zones 4 – 7.