Shrub
St. John's Wort
Hypericum
Monrovia® varieties
Varieties We Carry
KilimanjaroHypericumStandardHypericumStandardHypericum densiflorum
Sizes & Pricing
1 galFrom$9.95
#2MonroviaFrom$59.95
3 galFrom$19.95
Fresh this week. Last restocked Jun 15.
LightFull Sun, Part Shade
WaterLow to Moderate
Mature size3-12 feet × 3-6 feet (varies by species)
About St. John's Wort
St. John's wort (Hypericum spp.) is a diverse genus of shrubs and subshrubs bearing bright yellow five-petaled flowers with showy stamens over a long summer-to-fall season. Multiple native Florida species thrive in NE Florida Zone 9b landscapes, offering drought tolerance, pollinator value, and adaptability to sandy soils from low groundcover forms to upright specimens 3–12 feet tall. Starting at $9.95.
Plant details
- Bloom Season
- Spring, Summer, Fall
- Flower Color
- Yellow
- Growth Rate
- Moderate
- Foliage
- Semi-evergreen
- Soil
- Sandy, Loam, Well-drained
Best planting months
Recommended forZone 9b · St. Augustine, FL
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Seasonal care
Bloom season. Good planting window.
Bloom season. Higher water demand in summer heat.
Ideal planting window.
May lose some foliage in cold snaps.
Care essentials
Light
Grow in full sun to light part shade; full sun produces the most abundant bloom. Most Hypericum species native or adapted to Florida tolerate the region's intense sun and heat well with adequate moisture.
Water
Moderate water needs; established plants are drought-tolerant and rely largely on NE Florida's rainfall. Water during extended dry periods, especially in spring. Good drainage is essential — avoid low, wet areas where root rot can develop.
Soil & Fertilizer
Adaptable to sandy to loamy well-drained soils. Apply a balanced slow-release shrub fertilizer once in spring. Prune lightly after the main flush of bloom to encourage reblooming through fall; remove dead or crossing stems in late winter.
Similar needs
Camellia
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Cuphea
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Firespike
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Jasmine
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Loropetalum
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Photinia
Shares 6 of the same needs: full sun, moderate water, sandy, salt tolerance, zone 9a hardiness, and pollinator-friendly.
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Common questions
Is St. John's Wort a good plant for St. Augustine?
St. John's Wort is a shrub for Zone 9b coastal Florida gardens, with low salt tolerance, reaching 3-12 feet × 3-6 feet (varies by species).
Care information verified from
Last reviewed February 2026. Our care guidance comes from trusted horticulture sources and decades of helping St. Augustine gardeners. Conditions here can vary dramatically from one area to the next, so come ask us and we'll tailor it to your yard.