How to get St. John’s wort plant to bloom
Have had my plant for about 3 years and have had only 1 bloom each year. How to get St. John's wort plant to bloom?
Certified GKH Gardening Expert
If the plant seems happy and healthy but just not flowering it may be to much nitrogen in your soil.
You can add phosphorous by using Bone Meal.
Here are a couple of links that will help.