St. John's Wort
Hypericum perforatum

St. John's Wort 

St. John's Wort (Hypericum perforatum) is a perennial herb growing 1-3 ft tall, hardy in USDA Zones 5-9, prefers well-drained, loamy soil, full sun to part shade, low to medium moisture, not edible, and has medicinal uses.


Picture illustrating St. John's Wort plant

Habit

Perennial

Height

0.3-1 m

Growth

Fast

Soil

Well-drained, sandy

Shade

Full sun to part shade

Moisture

Low to medium 

Edible

No

Medicinal

Yes

Origin

Europe, Asia

Climatic Condition

Temperate

Temperature (°)

15-30°C

Humidity (%)

40-60

Potting media

Loamy, peat

Fertilizers

Balanced, organic NPK

Watering

Regular

Plant Weight 

100-200 g

Flowering Time

Summer, Fall

Soil Ph level

6.0 - 7.5

Water Ph level

6.5 - 7.0

Soil EC

1-2 dS/m

Yield Per Plant 

Medicinal herb

NPK ratio 

05:10:10

life Span

Perennial

Health Benefits

Depression, wound healing

Suggested Grow Media or Potting Mix ?

50% loam, 25% compost, 25% sand


Suggested Fertigation/Fertilizers

Fertilize every 6 weeks with a balanced fertilizer.

Common Diseases and Remedies

Rust, Leaf Spot, Aphids, Root Rot, Powdery Mildew

Orange or red pustules on leaves, Brown or black spots on leaves, Sticky residue, yellowing leaves, Wilting, yellowing leaves, root decay, White powdery spots on leaves

Remove infected leaves, neem oil, Insecticidal soap, Improve drainage, reduce watering, baking soda spray.

Fungicides containing myclobutanil, Copper-based fungicides, Imidacloprid, Fungicides containing metalaxyl, Sulfur-based fungicides

Wintergreen
Gaultheria procumbens