When does Hypericum densiflorum bloom?

Bushy St. Johnswort typically flowers from June through August, producing dense clusters of small yellow blooms at the branch tips.

What growing conditions does Bushy St. Johnswort need?

This shrub does best in full sun with medium to consistently moist soil. It tolerates some part sun but flowers most heavily with more direct light.

What pollinators visit Bushy St. Johnswort flowers?

Bees, butterflies, and beetles are the most common visitors to its yellow summer blooms, drawn to the abundant pollen and open flower structure.

Is Bushy St. Johnswort deciduous or evergreen?

It is generally deciduous, dropping its leaves in fall after the summer bloom period ends.

What kind of landscape does Hypericum densiflorum suit?

It works well in rain gardens, pond margins, and moist meadow plantings where it can get full sun and steady soil moisture.

Is Bushy St. Johnswort toxic to livestock?

The USDA PLANTS Database does not flag Bushy St. Johnswort as toxic to livestock.

Is Bushy St. Johnswort HOA-friendly?

Bushy St. Johnswort is generally an HOA-friendly choice in the right placement, with low maintenance.

Bushy St. Johnswort

Name: Pollinator Patch
Author: Pollinator Patch

Hypericum densiflorum

Last reviewed: September 2026

Bushy St. Johnswort is a medium-sized shrub that blooms with clusters of small yellow flowers from June through August. It grows best in full sun with consistently moist to medium soil, often near wetland edges, stream banks, and open woodlands.

Toxicity unknown

Bushy St. Johnswort (Hypericum densiflorum) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

The USDA PLANTS Database (opens in new tab) does not flag Bushy St. Johnswort as toxic to livestock.

Light

full sun

Water

medium

Size

36"–72" H × 36"–60" W

Bloom

Jun, Jul, Aug

Native to

AL, AR, DE, GA and 12 more states

Pollinators

bees, butterflies, beetles

Before you buy

Your city may pay you to plant this

Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 452 programs across 44 states, each with a link to the provider and the date we last checked it.

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Browse plants for this ecoregion

Western Gulf Coastal Plain South Central Plains Piedmont Northeastern Coastal Zone Middle Atlantic Coastal Plain Northern Piedmont Southeastern Plains Blue Ridge Ridge and Valley Central Appalachians Western Allegheny Plateau Southern Coastal Plain Atlantic Coastal Pine Barrens

Bushy St. Johnswort is a medium-sized native shrub that produces clusters of bright yellow flowers throughout the summer months. This deciduous plant forms a rounded, dense shape and thrives in full sun with moderate water needs. It provides reliable summer color and works well as a foundation planting or mixed border shrub.

Growing Bushy St. Johnswort

Grow Bushy St. Johnswort in full sun and medium water. Mature plants reach 36 to 72 inches tall and spread 36 to 60 inches wide. Expect low maintenance to keep it looking intentional in a front yard.

In an HOA neighborhood

Bushy St. Johnswort is an HOA-friendly choice. Maintenance level: low. Tidiness: 4 out of 5.

Works well in: front yard, foundation, street edge, mid zone.

Winter appearance may look sparse when dormant

Wildlife value

The abundant yellow flowers attract bees, butterflies, and beetles during the long summer blooming period. This native shrub provides important nectar sources when many other plants have finished flowering.

Common questions

When does Hypericum densiflorum bloom?: Bushy St. Johnswort typically flowers from June through August, producing dense clusters of small yellow blooms at the branch tips.
What growing conditions does Bushy St. Johnswort need?: This shrub does best in full sun with medium to consistently moist soil. It tolerates some part sun but flowers most heavily with more direct light.
What pollinators visit Bushy St. Johnswort flowers?: Bees, butterflies, and beetles are the most common visitors to its yellow summer blooms, drawn to the abundant pollen and open flower structure.
Is Bushy St. Johnswort deciduous or evergreen?: It is generally deciduous, dropping its leaves in fall after the summer bloom period ends.
What kind of landscape does Hypericum densiflorum suit?: It works well in rain gardens, pond margins, and moist meadow plantings where it can get full sun and steady soil moisture.
Is Bushy St. Johnswort toxic to livestock?: The USDA PLANTS Database does not flag Bushy St. Johnswort as toxic to livestock.
Is Bushy St. Johnswort HOA-friendly?: Bushy St. Johnswort is generally an HOA-friendly choice in the right placement, with low maintenance.

These answers were drafted with an AI model from this plant's data. Verify care details with a local expert.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

See all plant problem guides

Ready to grow Bushy St. Johnswort? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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