perennial > HYPERICUM
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genus Hypericum GUIDES
Common ProblemsPruningVarieties
St. John ’s Wort is a herbaceous recurrent showcasing paired light-green leave of absence and attractive , star topology - form flowers in various shade of jaundiced , that will light up up even the dreariest of gardens .
It is a plant that grow easily in the UK mood and can flourish in all soil case .
H.xhidcoteense‘Hidcote’
You should , however , melody on the side of forethought if you plan to lend it to your garden , as in many local areas it is sort out as a noxious weed.1Common St. Johnswort identification and control : Hypericum perforatum . ( 2018 , September 18 ) . King County . retrieve March 20 , 2023 , fromhttps://kingcounty.gov/services/environment/animals-and-plants/noxious-weeds/weed-identification/st-johns-wort.aspx
If that does n’t put you off , and you ’re still piercing to bring St. John ’s Wort into your garden , read on for our best care and growing tips , to find out everything you postulate to have it away about this brilliant and far-flung marvel plant .
Overview
PreferredFull Sun / Partial Shade
ExposureExposed or Sheltered
Height0.5 – 1 M
Spread0.1 – 0.5 M
Bloom TimeJune – August
PreferredMost Soil Types
MoistureMoist but well drain
pHAny
Hypericum ‘ St John ’s Wort ’ is a member of the Hypericaceae menage , and is found in most part of the existence , including Europe , North and South America , Australia and Asia.2Hanson , S. ( 2013 , January 9).Hypericaceae – St John ’s wort kin . Whiteknights Biodiversity . recollect March 20 , 2023 , fromhttps://blogs.reading.ac.uk/whiteknightsbiodiversity/2025-04-25/hypericaceae-st-johns-wort-family/
H.xhidcoteense‘Hidcote’
Due to its widespread nature , it is hard to immobilise down exactly where it originated .
According to Kew , the variationHypericum perforatumis think to come from Europe , North Africa and Asia.3Hypericum perforatum . ( n.d . ) . Kew Royal Botanic Gardens . Retrieved March 20 , 2023 , fromhttps://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:433719-1
There are thought to be around 400 dissimilar varieties of Hypericum , but it’sH. perforatumthat is known as mutual St. John ’s Wort.4Hypericum perforatum . ( n.d.-b ) . North Carolina Extension Gardener Plant Toolbox . Retrieved March 20 , 2023 , fromhttps://plants.ces.ncsu.edu/plants/hypericum-perforatum/
Other gens for this popular smorgasbord admit ‘ Herb John ’ , ‘ Devil Chaser ’ , ‘ Devil ’s Flight ’ and ‘ God ’s Wonder Plant ’ .
It is also sometimes name ‘ St. Columba ’s Flower ’ .
When fully produce , H. perforatumreaches 0.5 - 1 chiliad in height , and a spread of up to 0.5 MB ( it can take up to 5 years to get through this point ) .
It has reddish , woody stems and yellow - immature leaves with translucent dots that make the leaves appear perforate and inspire its name .
In early summertime , it produce vivid yellow , star topology - mold blooms of up to 2.5 atomic number 96 in diameter .
Habitat & Growing Conditions
genus Hypericum ‘ St John ’s Wort ’ is thought to be native to Europe and Asia , but has circularise and now grows in many other share of the world , including North and South America , Australia and New Zealand .
It can thrive in a variety of mood , include those with summer or wintertime - dominant rainfall .
It generally develop in fields and pastures .
How To Grow St. John’s Wort
The best time to set Hypericum ‘ St. John ’s Wort ’ is in mid - spring , March to April , or in the autumn , in September or October .
However , you’re able to plant at any time of the year , providing the soil is not frozen .
One of the best ( and most common varieties ) of St. John ’s Wort to grow in the UK isH.xhidcoteense‘Hidcote ’ .
This variety produces legion bright chickenhearted blossom throughout July and August and stay mostly evergreen over the wintertime .
It typically grows to 1.2 m marvelous , and can also make an attractive hedging plant life .
To implant a Hypericum , you should find a partly shaded patch in your garden and turn over a yap double the size of the plant ’s root ball .
impart the flora , along with some organic fertiliser , and re - fill the hole with soil – irrigate the ground thoroughly .
St. John ’s Wort will adapt to most grow stipulation , and it is possible to maturate it in a container – although this does not comprise its ideal environment .
verify your container has good drainage , and keep the soil moist .
Hypericum Care
St. John ’s Wort is a very hardy plant that is easy to grow in the UK and requires next to no sustentation once launch .
It can boom in cheery or shaded condition , shelter or exposed – the ideal spot for it is probably one with partial shade .
It will grow in most soil types , including clay , chalk and sandy , and all pHs , as long as the soil is moist and has good drain .
The plant is therefore a double-dyed choice for any country of the garden and makes a especially corking addition to a riverbank , perimeter or wild flower sphere .
You should plant your Hypericum in spring or autumn ( providing the footing is n’t frozen ) , and H2O well .
Once install , Hypericum requires very trivial on-going care , but you should water as required during the growing period , or in cases of extreme drouth .
you may also total a fertilizer twice a yr for the first 5 years , to help it ground .
Propagation
genus Hypericum can be propagated by cum , partitioning , or by taking softwood cuttings .
To propagate by seminal fluid , sow seed any time from mid - spring to early fall .
Make indisputable the bed is well - dug and weed - loose , and the Earth’s surface soil is crumbly in grain .
place the germ around 0.5 m apart , depending on the variety .
Keep the land moist during the growing period .
To propagate Hypericum by air division , you should act in spring or fall , when the plant life is n’t in alive growth .
Lift the existing plant mildly out of the footing , and separate the solution ball into two .
Re - plant the divisions instantly , and water well .
This is an easy direction of pass around Hypericum .
If you want to take softwood cutting , the best time to do this is in July and August , when the plant is in full flower .
To take your cuttings , you should depend for young growing and non - flowering shoot that will root more easily .
Take 10 centimeter cuttings , starting from just above a bud .
Once you have your cutting , remove lower leaves and dip the bottom in a rooting hormone .
institute your cutting off in a dope with compost and water them , then overcompensate with a plastic bag and place them somewhere lovesome .
Keep the soil moist , and after around 10 week , your cuttings should be rooted and ready to pot one by one .
