Hypericum ascyron
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Hardiness Zone: 4-8 Height: 3-5 feet; 0.9-1.5 metres Spread: 1-3 feet; 0.3-0.9 metres Sun: Full sun to part shade Water: Medium Wildlife: The foliage is not a food source for mammals as it is partly toxic. The flowers attract mainly bumblebees which pollinate the plant. Other insects such as moth and butterfly caterpillars feed on the plant. Bloom Colour: Yellow Culture: Prefers moist conditions and will grow in various soil types including loam, clay-loam, and rocky soil. Noteworthy Characteristics: Great St. John's-Wort has light green, erect stems with opposite, lanceolate leaves. The upper surfaces of the leaves are dark green and they are paler underneath. The plant produces several flowers that have 5 yellow, often contorted, petals and many long yellow stamens.