Dwarf St. Johnswort
Hypericum mutilum
Last reviewed: August 2026
Toxicity unknown
Dwarf St. Johnswort (Hypericum mutilum) 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 Dwarf St. Johnswort as toxic to livestock.
Light
full sun
Water
medium
Size
4"–16" H × 4"–12" W
Bloom
Jun, Jul, Aug, Sep
Native to
AL, AR, CT, DE and 32 more states
Pollinators
bees, beetles
Before you buy
Your city may pay you to plant this
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Dwarf St. Johnswort is a compact annual wildflower that stays under 16 inches tall with small yellow blooms from June through September. This native plant forms neat, low mounds and works well as a natural groundcover or in mixed plantings. Its small stature and tidy growth habit make it easy to incorporate into landscaped areas.
In an HOA neighborhood
Dwarf St. Johnswort takes more care to keep looking intentional in a front yard. Maintenance level: moderate. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Annual lifecycle means gaps and reseeding needs
- Can appear weedy or sparse compared to perennial plantings
- May not provide consistent year-round structure expected in front yards
Wildlife value
The bright yellow flowers attract native bees and beneficial beetles throughout the summer months. Its extended blooming period provides consistent nectar sources during peak pollinator activity.
Common questions
- How much sun does Dwarf St. Johnswort need?
- Dwarf St. Johnswort grows best in full sun conditions.
- When does Dwarf St. Johnswort bloom?
- Dwarf St. Johnswort blooms in June, July, August, and September.
- Where is Dwarf St. Johnswort native?
- Dwarf St. Johnswort (Hypericum mutilum) is native to AL, AR, CT, DE and 32 more states, per the World Checklist of Vascular Plants (Kew).
- Is Dwarf St. Johnswort toxic to livestock?
- The USDA PLANTS Database does not flag Dwarf St. Johnswort as toxic to livestock.
- What pollinators does Dwarf St. Johnswort attract?
- Dwarf St. Johnswort draws bees and beetles.
- Is Dwarf St. Johnswort HOA-friendly?
- Dwarf St. Johnswort takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Dwarf St. Johnswort? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
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