Field of Science

Friday Fabulous Flower - St. John's Wort


Mid-summer is sort of a slow time for our gardens, so we do prize those plants that flower in July and August.  Two species of bushy St. John's Wort grow in our gardens, both sort of evergreen, flowering at exactly the same time.  The very bright yellow flowers are a great favorite of all the local bees, both in terms of number of visitors and diversity of bee species. And it's easy to see why.  How many anthers are there?  Botanists will count to 10, but after that it's just "many".  Just one pistil (sort of right center) but lots of stamens, a powder puff of pollen.  This is from the larger flowered species, Hypericum prolificum, it is not quite hardy at this latitude and portions tend to die over winter, but then new plants pop up now and again, so never had to replace it.  H. kamianum seems to be hardier; it is a smaller shrub with smaller flowers and can fit in almost anywhere.  

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