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Public Plant Profile

Blues Festival® St. John's Wort

Hypericum kalmianum 'SMHKBF' (Blues Festival®)

Category: Deciduous Shrub • St. John's Wort

Discover Blues Festival® 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: 2-3 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

Blues Festival® St. John's Wort is a compact, hardy shrub known for its vibrant blue-green foliage and bright yellow flowers. It attracts pollinators and is ideal for borders or mass plantings.

Ideal Conditions

Prefers full sun to partial shade and well-drained soil. Tolerates dry conditions once established.

Soil Preferences

Well-drained soil with moderate moisture. Adaptable to various soil types and pH levels.

Sun Needs

Sun

Watering Needs

Requires moderate watering, allowing soil to dry slightly between sessions.

Pruning Notes

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

Fertilizing Notes

A balanced fertilizer in early spring will support healthy growth.

Common Issues

May face issues with root rot in overly wet conditions or attract aphids.

Landscape Guidance

Landscape Use

mass plantingborderpollinator 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 naturalizing and attracting pollinators. Works well in sunny borders or as ground cover.

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Design Ideas Using This Plant

Use this page to get a feel for where Blues Festival® St. John's Wort may fit in the landscape, then explore similar plants below for more ideas on form, texture, and overall planting style.

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Helpful Next Steps

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Frequently Asked Questions

Is Blues Festival® 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. Bold Outdoors evaluates those practical conditions before recommending a plant broadly.

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 and installation plan for the property.

Next Step

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