Featuring a cheery yellow flower with prominent stamens in summer and autumn, the hypericum family contains more than 400 species of evergreen and deciduous shrubs and trees. No wonder these plants are popular, they are easy care and tolerant of a wide variety of climatic zones, soil types and light conditions. St Johns Wort or Hypericum perforatum is the most noted plant of this family and mainly grown for medicinal use.

How to grow hypericum in a garden

  1. Choose a sunny spot with well drained soil. Enrich the soil with Yates Dynamic Lifter Soil Improver & Plant Fertiliser. In areas with heavy or clay soil, add gypsum to help improve soil structure and drainage.
  2. Dig the planting hole twice as wide and to the same depth as the root-ball.  Remove the tree from the container, gently tease the roots and cut away any circled or tangled roots.
  3. Position in hole and backfill with soil, gently firming down. Form a raised or doughnut shaped ring of soil around the outer edge of the plant's root zone. This helps keep water where it's needed.  Always water in well after planting to settle the soil around the roots and keep the soil moist for several weeks while the new plant establishes. 
  4. Mulch around the base with organic mulch like bark chips, sugarcane or pea straw, keeping it away from the trunk.
  5. Water deeply, once or twice a week, depending on weather conditions.  
  6. Feed in autumn and spring with Yates Dynamic Lifter Soil Improver & Plant Fertiliser to promote strong root development, healthy foliage & flowers.


How to grow hypericum in a pot

  1. Pick a compact variety that can be grown in a pot.  Choose a pot at least 500mm wide and deep. Position in full sun.
  2. Fill chosen pot with quality potting mix, such as Yates Potting Mix with Dynamic Lifter.  Remove the shrub from the container, gently tease the roots and cut away any circled or tangled roots.
  3. Position in hole and backfill with potting mix, gently firming down. Water in well.
  4. Water deeply, once or twice a week, depending on weather conditions.
  5. Feed in autumn and spring with Yates Dynamic Lifter Soil Improver & Plant Fertiliser to ensure strong root development & healthy foliage & flowers.

Growing tips

  • Pinch the tips of the new growth in spring to create a bushier habit. 

  • Varieties available include:

  • Hypericum perforatum, (St Johns Wort) a herbaceous perennial with creeping rhizomes growing to 1 metre high.

  • Hypericum calycinum, a low growing, dense shrub - great for stabilising slopes. Best grown in pots  in Victoria and south eastern Australia because the plant is regarded as an environmental weed particularly if grown near bushland. 

  • There are a few pale pink varieties as well.

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