St. John's Wort | Hypericum perforatum

One of the most recognized medicinal herbs in the world, and for good reason. St. John's Wort has been used since ancient Greece for everything from wound healing and nerve pain to anxiety, depression, and insomnia — and it remains one of the top-selling herbal products in the United States today. The medicine is in the flowering tops: harvest them at peak bloom (traditionally around the summer solstice, when the flowers open on or near June 24th), and you'll notice the buds bleed a deep red oil when crushed — that's hypericin, the primary active compound. Flowers and buds go into tinctures, infused oils, salves for nerve pain and skin inflammation, and teas. It's a genuine living medicine cabinet in a two-foot plant.

In the garden it's equally generous and nearly effortless. Upright, branching stems carry clusters of bright star-shaped yellow flowers with distinctive black-dotted petal edges from early to late summer, and the leaves — when held to light — show the tiny translucent perforations that give it its species name. It tolerates drought once established, thrives in lean soil, spreads readily by seed, and asks very little in return. A solid pollinator plant and a beautiful one.

Latin Name: Hypericum perforatum 

Light: Full sun to part shade; more flowers in full sun 

Soil: Well-drained, average to lean; tolerates poor soil; adaptable to a wide pH range 

Water: Moderate; drought-tolerant once established 

Mature Size: 1–3 ft tall 

Bloom Time: Early to late summer (peak near summer solstice) 

Hardiness Zone: 3–8 

Wildlife Value: Attracts bees and beneficial insects 

Medicinal: Flowering tops harvested at peak bloom; used in tinctures, infused oils, salves, and teas for nerve pain, inflammation, skin conditions, anxiety, and depression

⚠️ Note: Can interact with prescription medications including antidepressants, birth control, and blood thinners — this is a potent herb; research interactions thoroughly before internal use

⚠️ Research thoroughly and consult a qualified herbalist for therapeutic use.