Square-stalked St John's-wort (Hypericum Tetrapterum) is a perennial herb in the Hypericaceae family with easy care difficulty. It requires moderate watering and partial shade or full sun light in USDA hardiness zones 5-8. This plant is safe for cats and dogs.
A herbaceous perennial plant with square, winged stems and opposite, rounded to oval leaves.
Square-stalked St John's-wort
Hypericum Tetrapterum
A herbaceous perennial plant with square, winged stems and opposite, rounded to oval leaves.
Quick Facts
Safety
Growing Conditions
Care Calendar
Monthly care tasks for Square-stalked St John's-wort
Expert Care Tips
Pro tips from botanists and plant experts
Watering Tip
Check soil moisture by inserting your finger 1 inch deep. Water only when the top layer feels dry to prevent overwatering.
Humidity Trick
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Growth Hack
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