Plant Calculator
Enter the approximate length and width of the area you will be planting and click 'Calculate' to determine how many Hypericum calycinum you will need.
*Correct and successful spacing is complex and depends on project conditions.
Hypericum calycinum
St John's-wort (Aaron's Beard)
Hypericum calycinum is a semi-evergreen ground cover, spreading by stolons. Leaves are green to blue-green, 3" x 1" elongated leaves. Blooms yellow in early Summer, 2"-3" in diameter. Cut back late Winter/early Spring to remove brown leaves when winterburned. South - if evergreen, cut back every 3 years to rejuvenate. Recommended for moderate to large areas. Not appropriate for small gardens. Prefers well drained soil with average watering. Prefers some shade in zones 7, otherwise thrives in full sun. Mature height 12"-18", spread 24"
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Classic Pint: 40¢ price break order at least 25 50¢ price break order at least 250
- Full Sun to Part Shade
- Semi-Evergreen
- Ground cover for medium to large areas
- Not for small gardens
- Blooms yellow early Summer
- Category: Perennial
- Hardiness Zone: 5-9
- Height: 12-18 Inches
- Spread: 24 Inches
- Spacing: 12-18 Inches
- Bloom Color: Yellow