shrub

Peelbark St. John's Wort

Hypericum fasciculatum

The Story

Plant Bio

Hypericum fasciculatum is a low-growing, evergreen shrub with dense foliage and small, yellow, star-shaped flowers that bloom in summer, providing attractive ground cover and visual interest.

This species is valued for its ability to thrive in wet, boggy conditions and is often used for shoreline stabilization and in wetland gardens.

Uses & Benefits:

Ornamental UsesBright yellow flowers add cheerful color to sunny gardens.
Practical UsesDrought-tolerant shrub reduces water needs.
Ecological BenefitsProvides habitat for beneficial insects.

Essentials

At a Glance

Plant Type

Shrub

Height

30 inches

Width

30 inches

Light

Full Sun

Zones

8, 9, 10

Water

High

Humidity

Average

Lifespan

Perennial

Native To

Southeastern United States

Toxicity

Can be toxic to livestock if ingested in large quantities

Bloom period

Mid-summer – Late summer

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In flower about 2 months of the year

Planting

How to Grow

  1. Tuck seeds or cuttings into well-draining soil in spring.
  2. Water regularly until established, about 6 weeks.
  3. Place in full sun for best flowering.
  4. Prune lightly after flowering to maintain shape.
  5. Mulch around base to conserve moisture.
  6. Avoid overwatering in winter.

Pro Tip

Ensure excellent drainage to prevent root rot and promote healthy growth.

Keep It Thriving

Care Guide

Do

  • Water during prolonged dry spells 🌱
  • Prune lightly after flowering
  • Mulch to retain moisture

Don't

  • Overwater in winter ❌
  • Heavy fertilizing
  • Neglect pruning

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Fertilize
Mulch
Plant
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Drought-tolerant hedgeSunny border accent

Companion Plants

Lavender SedumRussian Sage Coreopsis

Multiply

Propagation Methods

Good to Know

Common Questions

Peelbark St. John's Wort questions

What zones can Peelbark St. John's Wort grow in?

Peelbark St. John's Wort is hardy in USDA Zones 8–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Peelbark St. John's Wort deer resistant?

Not reliably. Deer may browse Peelbark St. John's Wort, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Peelbark St. John's Wort bloom?

Peelbark St. John's Wort typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Peelbark St. John's Wort need full sun?

Peelbark St. John's Wort does best in full sun (6+ hours).

Keep exploring

Grow Peelbark St. John's Wort with confidence

See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.