St. Johns Wort
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10+ Year Survival Seed Viability
- Category: Herb
- Type: St. Johns Wort
- Variety: Common
- Family: Hypericaceae
- Botanical Name: Hypericum perforatum
- Hardiness Zones: 5,6,7,8,9,10
- Growing Difficulty: 5
- Soil PH: 4.5 to 8.0
- Fertilizer Requirements: 20-20-20
- Soil Type: Any Type
- Germination (days): 10 to 20
- Soil Temp for Germination: 60-70°F
- Lighting Conditions: FULL SUN, PART SHADE
- Days to Maturity: 90 - 120
- Planting Depth: 1/10”
- Distance Apart (in row): 8 - 12”
- Row Spacing: 12 - 18”
DIRECT SOW IN FULL SUN WHEN SOIL TEMPS ARE ABOVE 60°F
6-8 WEEKS BEFORE LAST FROST, SOW ON SURFACE, TRANSPLANT WHEN 2-3” TALL
St. Johns Wort can be a tricky plant to grow but is valuable when established.
Start by sowing the seeds on the surface of the soil in the Fall or Early Spring.
These plants will not require much in the way of maintenance, as they are actually a weed that will be around indefinitely once they become established. St. Johns Wort does not need replanted every year and is a perennial plant in the appropriate growing zones.
This plant enjoys a mix of sun and shade. Too much sun will damage the plant, whereas too much shade will inhibit the growth. Make sure the plant has shade during the hottest part of the afternoon sun.
Most people think of St Johns Wort as a medicinal herb, but it can be used in fresh salads as well. Try using some fresh flowers as an edible garnish that adds a bit of color to your salad.
St. Johns Wort has been used as a medicinal plant since the ancient Greek times. The name itself refers to John the Baptist.
This plant is used for a variety of conditions, including kidney problems, lung ailments, depression, and insomnia, as well as an aid in healing wounds.
St. Johns Wort is sold as a dietary supplement with its most notable cure as an anti-depressant. You may also find that St Johns Wort helps with menopausal symptoms, ADHD, obsessive compulsive disorders, and more.
St. Johns Wort is harvested for the flowers. You can simply pick the fresh flowers and buds or even cut the top several inches off the plant when in full bloom (June/Early July).
Make sure to avoid the use of pesticides on these plants.
The seed of the St Johns Wort plant matures in the early fall. Wait until the flower has turned brown and the seed capsule has turned brown and dry.
Harvest the seed capsules and break them in your hands to reveal the seeds. Allow the seeds to dry thoroughly before safely storing for planting during your next growing season.