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Sunny Boulevard® St. John's Wort

Hypericum kalmianum 'Deppe' (Sunny Boulevard®)

Category: Deciduous Shrub • St. John's Wort

Discover Sunny Boulevard® St. John's Wort, a vibrant, low-maintenance plant perfect for borders and pollinator gardens.

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Mature Height: 1-2 feet
Mature Width: 1-2 feet
Bloom Color: Yellow
Bloom Time: Summer
Light: Sun
Zone: Zones 4-8
Maintenance: Low
Growth Rate: Moderate
Season of Interest: Summer
Foliage: Deciduous

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Bold Outdoors Verified Insight

Designed & Reviewed by

Josh Graber

Owner and Landscape Designer · Kansas State University · 25+ Years Experience

B.S. in Horticulture and Landscape Design – Kansas State University

25+ years of industry experience

Description

Sunny Boulevard® St. John's Wort is a compact, hardy shrub known for its bright yellow flowers and attractive foliage. It is ideal for borders and mass plantings, providing vibrant color throughout the summer.

Ideal Conditions

Thrives in full sun to partial shade with moderate moisture. Prefers well-drained soil and can tolerate a range of soil types.

Soil Preferences

Well-drained soil is ideal; adaptable to various pH levels and moisture conditions.

Sun Needs

Sun

Watering Needs

Water regularly until established; then, it is drought-tolerant.

Pruning Notes

Light pruning after flowering can help maintain shape and encourage new growth.

Fertilizing Notes

Fertilize in spring with a balanced fertilizer to promote healthy growth.

Common Issues

Generally pest-resistant but can be susceptible to root rot in overly wet conditions.

Landscape Guidance

Landscape Use

bordermass plantingpollinator garden

Special Features

Attractive yellow flowersdrought-tolerantlow maintenance.

Wildlife Value

Attracts pollinators and provides habitat.

Resistance / Tolerance

Drought tolerant.

Notes from Our Designer

Great for adding color and attracting pollinators. Works well in naturalized areas.

Maintenance Notes

Low

Complementary Plants

Plants That Pair Well in the Landscape

Selected using botanical relationships, growing conditions, color harmony, size, texture, season, and landscape use.

What Clients Say

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“I have had great experiences with Bold Outdoors. Josh designed our home's landscaping and has been a valued partner for the past 7 years as we have added to and maintained our home's landscaping.”

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“Bold Outdoors has provided the highest quality professional landscape design, installation and after installation services at my residence.”

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Helpful Next Steps

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Frequently Asked Questions

Is Sunny Boulevard® St. John's Wort a good fit for Kansas City landscapes?

That depends on sun exposure, moisture, spacing, and how the plant will be used in the overall design.

How should homeowners use this plant information?

Use the plant profile as a planning tool for size, conditions, and visual role, then connect it to the broader landscape design plan.

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