How to Propagate a Hypericum Shrub


Hypericum is a genus of flowering plants that includes more than 400 species. Hypericum shrubs are perennial and grow from 1 to 3 feet in height. An overall tough little shrub, it does best in a sunny location but will tolerate shade. Hypericum is also heat and drought-tolerant. Hypericum generally is hardy to USDA zones 6 to 10, depending upon species. Start your seeds in May.

Step 1

Pour equal parts of potting soil and sphagnum peat moss into a seeding flat to within 1/4 inch of the top. Water it well, allow to drain and water again. Allow the tray to drain completely for one hour.

Step 2

Sprinkle the seeds over the surface of the soil and cover with a very thin layer of soil. Spritz the soil lightly with a misting bottle.

Step 3

Place the seeding tray in an area of bright light but not direct sun. Spritz the soil as needed so that it remains moist, but not soggy.

Step 4

Thin the Hypericum seedlings two weeks after germination, disposing of smaller, weaker seedlings and those that are too close to one another.

Step 5

Transplant the seedlings after one month of thinning in a sunny location in the yard.

Step 6

Loosen the soil in the planting area with a garden fork and level the area. Dig a hole deep enough so that the roots of the hypericum just touch the bottom of the hole. Fill the hole with soil, tamping it gently around the base of the seedling.

Step 7

Water the planting area with a fine mist setting on a garden hose sprayer and keep the soil moist until the plants become established.

Things You'll Need

  • Potting soil
  • Sphagnum peat moss
  • Seeding flat
  • Plant misting bottle
  • Garden fork
  • Gardening trowel


  • St. John's Wort
  • Oregon State University: Landscape Plants
  • "Native Trees, Shrubs, and Vines: A Guide to Using, Growing and Propagating North American Woody Plants;" William Cullina; 2002
Keywords: propagate a hypericum shrub, propagate woody shrubs, plant hypericum seeds

About this Author

Victoria Hunter, a former broadcaster and real estate agent, has provided audio and written services to both small businesses and large corporations, worldwide. Hunter is a freelance writer specializing in the real estate industry. She devotes her spare time to her other passions: gardening and cooking. Hunter holds a Bachelor of Arts in English/creative writing.